Components. Table of Contents. FemtoLine Laser Crystals. FemtoLine Laser Optics. Cleaning Instructions

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1 Components Table of Contents Laser Mirrors...5. Low GDD Ultrafast Mirrors...5. Dual Band Mirrors...5. Broadband Low GDD Ultrafast Mirrors Laser Harmonic Separators Laser Output Couplers Laser Rear Mirrors Laser Beamsplitters...5. Broadband Laser Beamsplitters...5. Thin Lenses...5. Anti-Reflective Coated Lens Kits Thin Film Laser Polarizers Angle of Incidence Angle of Incidence Angle of Incidence Quartz Retardation Waveplates Zero Order Optically Contacted Waveplates Zero Order Air-Spaced Waveplates Zero Order Dual Wavelength Waveplates...5. Low Order Waveplates...5. Multiple Order Dual Wavelength Waveplates...5. Polarization Plane Rotators...5. Group Velocity Delay Compensation Plates Variable Attenuators for Linearly Polarized Laser Beam Variable Attenuator HBBi7 Variable Broadband Attenuator Variable Attenuator Variable Attenuator Variable Attenuator FemtoLine Laser Crystals Ti:Sapphire Laser Line and Harmonics Crystals Thin BBO crystals for SHG and THG of Ti:Sapphire Laser Wavelength BBO for BBO for Femtokits for third harmonic generation of femtosecond Ti:Sapphire laser...5. Basic Femtokit FK Series...5. Extended FemtoKit FKE Series...5. Thin AgGaS Crystals for DFG ->.5-. µm Yb:KGW and Yb:KYW Crystals Laser Lines and Harmonics BBO and LBO crystals for SHG of Yb:KGW/KYW frequency conversion SHG LBO crystals SHG BBO crystals Optical ComponentS Cleaning Instructions See page A. 5. EKSMA OPTICS Tel.: Fax: info@eksmaoptics.com

2 FemtoLine Laser Optics Laser Mirrors Laser mirrors for femtosecond applications are designed to have a broad operating wavelength range and linear phase versus frequency characteristics (group delay dispersion (GDD)). The coating is a single layer dielectric and has no phase shift over the operating wavelength region. High reflectivity mirrors always have higher reflection, broader operating region and lower pulse distortion for s-polarization than for p-polarization for the same dielectric coating. If possible use the mirrors with s-polarized beam. Our standard mirrors are suitable for fundamental Ti:Sapphire and Yb:KGW or KYW lasers and their doubled, tripled or quadrupled frequencies. Low GDD Ultrafast Mirrors Substrate material: BK7 grade A Reflection, % Reflectance GDD, fs 8 6 Polarization HR>99,5%@8-, AOI=5 s p 8 Polarization HRsp@8- GDD, AOI=5 s p Substrate Material S Surface Flatness S Surface Quality S Surface Quality Diameter Tolerance Thickness Tolerance Wedge Chamfer UV grade Fused Silica or BK7 glass λ/ at 6 scratch & dig (MIL-PRF-8B) Coercial polish ±.5 < min. at 5 typical Technology Electron beam multilayer dielectric or Ion beam sputtering Adhesion and Durability Per MIL-C-675A. Insoluble in lab solvents Clear Aperture Exceeds central 85% of diameter Hard dielectric High Reflection R>99.5% Angle of Incidence or 5± Designed for average polarization R=(R s +R p )/ Laser Damage Threshold > mj/cm, 5 fsec pulse, 5 Hz, 8 typical Coated Surface Flatness λ/ at 6 over clear aperture Size:.7 R, % (s+p)/ AOI= / AOI=5 AOI= AOI=5 AOI= / AOI= / i - 57 / / i / / i -8 6 / / i - 6 / 6 Size: 5. 6 R, % (s+p)/ AOI= / AOI=5 AOI= AOI=5 AOI= / AOI= / i - 89 / / i / / i / / i - 75 / 75 Size: R, % (s+p)/ AOI= / AOI=5 AOI= AOI=5 AOI= / AOI= / i 5- / / i 5-55 / / i 5-8 / / i 5- / Size: R, % (s+p)/ AOI= / AOI=5 AOI= AOI=5 AOI= / AOI= / i 7-99 / / i / / i / / i 7-85 / 85 Visit for new products and prices 5.

3 Low GDD Ultrafast Mirrors Substrate material: UV grade Fused Silica Reflection, % Reflectance GDD, fs Reflection, % Polarization HR>99.5%@5-5, AOI=5 8 Polarization s p HRsp@5-5 GDD, AOI= HR>99%@57-75, AOI=5 Recoended for high power laser applications operating in UV region. Related Products Adapter for Mirror at 5º 8-5 See page 8.77 Polarization s p s p Size:.7 R, % (s+p)/ AOI= / AOI=5 AOI= AOI=5 AOI= / AOI= / i / / i - 77 / / i - 75 / / i / / i / / i - 75 / 75 Size: 5. 6 R, % (s+p)/ AOI= / AOI=5 AOI= AOI=5 AOI= / AOI= / i -66 / / i - 7 / / i - / / i / / i / / HHR-i -8HHR 5 / / i - 9 / / HHR-i -HHR 55 / 55 Size: R, % (s+p)/ AOI= / AOI=5 AOI= AOI=5 AOI= / AOI= / i / / i 5-87 / / i 5-8 / / i / / i / / i 5-69 / 69 Size: R, % (s+p)/ AOI= / AOI=5 AOI= AOI=5 AOI= / AOI= / i / / i 7-8 / / i 7-7 / / i / / i / / i 7-58 / 58 Reflection, % Reflectance GDD, fs Polarization s p HR>99.5%@76-8, AOI=5 8 Polarization s p Reflection, % Reflectance GDD, fs Polarization s p HR>99.5%@-6, AOI=5 8 Polarization s p HRsp@76-8 GDD, AOI=5 HRsp@-6 GDD, AOI=5 5. EKSMA OPTICS Tel.: Fax: info@eksmaoptics.com

4 Dual Band Mirrors Substrate Angle of Incidence or 5± Designed for average polarization R=(R s +R p )/ Laser Damage Threshold Dual Band Mirrors Substrate material: BK7 grade A T, % HR>99.5%@ , AOI = 5 Hard dielectric High Reflection R>99.5% >5 mj/cm, 5 fsec pulse, 8 typical Material S Surface Flatness S Surface Quality S Surface Quality Diameter Tolerance Thickness Tolerance Wedge Chamfer UV grade Fused Silica or BK7 glas λ/ at 6 scratch & dig (MIL-PRF-8B) Coercial polish ±.5 < min. at 5 typical Size:.7 R, % (s+p)/ AOI= / AOI=5 AOI= AOI=5 AOI= / AOI= / i / / i / 85 Size: 5. 6 R, % (s+p)/ AOI= / AOI=5 AOI= AOI=5 AOI= / AOI= / i 5-8 / / i 5-5 / Size: R, % (s+p)/ AOI= / AOI=5 AOI= AOI=5 AOI= / AOI= / i / / i / 5 Size: R, % (s+p)/ AOI= / AOI=5 AOI= AOI=5 AOI= / AOI= / i / / i / 7 Dual Band Mirrors Substrate material: UV grade Fused Silica T, % Recoended for high power laser applications operating in UV region HR>99%@ + 8, AOI = 5 Size:.7 R, % (s+p)/ AOI= / AOI=5 AOI= AOI=5 AOI= / AOI= / i 6-8 / / i 6-5 / Size: 5. 6 R, % (s+p)/ AOI= / AOI=5 AOI= AOI=5 AOI= / AOI= / i / / i / 8 Size: R, % (s+p)/ AOI= / AOI=5 AOI= AOI=5 AOI= / AOI= / i 65-8 / / i 65-5 / Size: R, % (s+p)/ AOI= / AOI=5 AOI= AOI=5 AOI= / AOI= / i 67-8 / / i 67-5 / Related Products Laser Line and Dual Laser Line Mirrors of other wavelengths See page.9 Prisms See page. Kinematic Mirror/Beamsplitter Mounts 8-56 See page 8.65 Visit for new products and prices 5.

5 Broadband Low GDD Ultrafast Mirrors High reflectivity and low group delay dispersion in broad region centered at 8 Hard Dielectric High Reflection or Ion Beam Sputtering Angle of Incidence or 5± Designed for average polarization R=(R s +R p )/ Laser Damage Threshold >5 mj/cm, 5 fsec pulse, 8 typical Substrate Broadband Low GDD Ultrafast Mirrors Substrate material: BK7 grade A Substrate material: UV grade Fused Silica Related Products Metallic Coated Mirrors See page. Kinematic Mirror / Beamsplitter Mounts 8-56 See page 8.65 Material S Surface Flatness S Surface Quality S Surface Quality Diameter Tolerance Thickness Tolerance Wedge Chamfer UV grade Fused Silica or BK7 glas λ/ at 6 scratch & dig (MIL-PRF-8B) Coercial polish ±.5 < min. at 5 typical Diameter, Thickness T, R, AOI = AOI = 5 % (s+p)/ AOI= / AOI= i / i / i / i / i / i / 5 Diameter, Thickness T, R, AOI = AOI = 5 % (s+p)/ AOI= / AOI= i / i / HHR-i 8-788HHR / / i / i / i / i / 6 Reflectance, % 8 6 Polarization s p average Reflection GDD, fs AOI=5-5 Polarization s p 5.5 EKSMA OPTICS Tel.: Fax: info@eksmaoptics.com

6 LASER HARMONIC SEPARATORS Offered on Ø.5 or inch UV FS substrates with surface flatness λ/ Harmonic separators are dichroic beamsplitters that reflect one wavelength and transmit others. Reflectance is better than 99.5% for the wavelength of interest and transmittance is at least 9% for the rejected wavelengths. The rear surface of har- Substrate monic separators is antireflection coated. If possible use shorter wavelength for reflection and longer wavelengths for transmission in order to have higher reflection/ transmission coefficients. Material S Surface Flatness S Surface Quality S Surface Flatness S Surface Quality Diameter Tolerance Thickness Tolerance Parallelism Chamfer UV grade Fused Silica λ/ typical at 6 scratch & dig (MIL-PRF-8B) λ/ typical at 6 scratch & dig (MIL-PRF-8B) ±.5 < arcsec. at 5 typical Technology Adhesion and Durability Clear Aperture Coated Surface Flatness Back side antireflection coated Laser Damage Threshold Electron beam multilayer dielectric Per MIL-C-675A. Insoluble in lab solvents Exceeds central 85% of diameter λ/ at 6 over clear aperture AOI 5, R<.5% AOI, R<.5% > mj/cm, 5 fsec pulse, 8 typical T, % Reflected wavelength,, R > 99.5% Transmitted wavelength, Transmission, % AOI Substrate material Ø.7x Ø5.x Ø5.8x8 Ø.7 / Ø5. / Ø >95 UV FS / 75 / >95 5 UV FS / 75 / >95 UV FS / 75 / >95 5 UV FS / 75 / >9 UV FS / 95 / >9 5 UV FS / 95 / >95 UV FS / 75 / >95 5 UV FS / 75 / 65 8 >9 UV FS / 7 / 55 8 >9 5 UV FS / 7 / >95 UV FS / 65 / >95 5 UV FS / 65 / >95 UV FS / 65 / >95 5 UV FS / 65 / >9 UV FS / 85 / >9 5 UV FS / 85 / >95 UV FS / 65 / >95 5 UV FS / 65 / 5 55 >9 UV FS / 7 / >9 5 UV FS / 7 / T, % , AOI= , AOI= T, % T, % , AOI= , AOI=5 T, % , AOI=5 Related Products Pellin-Broca Prisms. See page.5 Adapter for Beamsplitter at 5º 8-6. See page 8.77 Kinematic Mirror and Beamsplitter Mount 8-. See page 8.57 Visit for new products and prices 5.6

7 LASER OUTPUT COUPLERS An output coupler is a partially reflecting dielectric mirror used in a laser cavity. It transmits a part of the circulating intracavity power for generating a useful output from the laser. A low transmission output coupler leads to low laser threshold and possibly to poor laser efficiency if the losses due to output coupling do not dominate other parasitic losses in the laser cavity. The output coupler transmission is often chosen to maximize the output power, although its optimum value may be lower or higher if there are other design purposes (minimizing intracavity intensities or suppressing Q-switching instabilities in a passively mode-locked laser). The standard substrates are parallel within arcsec. If you need wedged substrates, please, choose from chapter Wedge Prisms (page.). T, % Low Group Delay Dispersion 8 6 Reflection, % Transmission, % Substrate material Substrate Material S Surface Flatness S Surface Quality S Surface Flatness S Surface Quality Diameter Tolerance Thickness Tolerance Parallelism Chamfer Ø.7 Ø5. 6 Ø5.8 8 UV grade Fused Silica λ/ typical at 6 scratch & dig (MIL-PRF-8B) λ/ typical at 6 scratch & dig (MIL-PRF-8B) ±.5 arcsec. at 5 typical Technology Electron beam multilayer dielectric Adhesion and Durability Per MIL-C-675A. Insoluble in lab solvents Clear Aperture Exceeds central 85% of diameter Angle of Incidence -8 Parallelism arcsec Back side antireflection coated R <.5% Laser Damage Threshold > mj/cm, 5 fsec pulse, 8 typical Ø.7 / Ø5. / Ø5.8 5± 5± UV FS / 5 / 5 6± ± UV FS / 5 / 5 65± 5± UV FS / 5 / 5 7± ± UV FS / 5 / 5 75± 5± UV FS / 5 / 5 8± ± UV FS / 5 / 5 85± 5± UV FS / 5 / 5 9± ± UV FS / / 95± 5± UV FS / / 97± ± UV FS / 9 / 5 98± ± UV FS / 9 / 5 99.±.5.±.5 UV FS / 6 / ± 5± UV FS / 5 / 5 8 6± ± UV FS / 5 / ± 5± UV FS / 5 / 5 8 7± ± UV FS / 5 / ± 5± UV FS / 5 / 5 8 8± ± UV FS / 5 / ± 5± UV FS / 5 / 5 8 9± ± UV FS / / 8 95± 5± UV FS / / 8 97± ± UV FS / 9 / ± ± UV FS / 9 / ±.5.±.5 UV FS / 6 / PR = 8, T = ±.5% -95. PR = 8, T = 5±% T, % PR = T = ±.5% -95. PR = T = 5±% -9. PR = T = ±% Related Products Uncoated Elliptical Mirrors See page.9 Kinematic Mirror and Beamsplitter Mount 8- See page EKSMA OPTICS Tel.: Fax: info@eksmaoptics.com

8 Laser REAR Mirrors High reflectivity (R>99.8%) dielectric coatings with high laser damage threshold are applied on laser rear mirrors. UV FS substrates are recoended for high power laser applications. Back side can be AR coated to avoid back reflection from second surface on request. Substrate Material S Surface Flatness S Surface Quality S Surface Quality Diameter Tolerance Thickness Tolerance ±.5 Chamfer Technology Adhesion and Durability Clear Aperture Angle of Incidence UV grade Fused Silica or BK7 glass λ/ at 6 scratch & dig (MIL-PRF-8B) Coercial polish at 5 typical Electron beam multilayer dielectric Per MIL-C-675A. Insoluble in lab solvents Exceeds central 85% of diameter -8 (normal) Hard dielectric high reflection: R>99.7% at 8 and R>99% at 7 88 Laser Damage Threshold > mj/cm, 5 fsec pulse, 8 typical T, % T, % T, % ±, AOI= 8±, AOI= 7 88, AOI= Substrate type Radius, Substrate material BK7 Substrate material UVFS Ø5. 6 Ø5.8 Ø5. / Ø5.8 Ø5. 6 Ø5.8 Ø5. / Ø5.8 ± Plano-plano - --i 5--i * 75 / --i 5--i * / 69 ± Plano-concave / / 9 ± Plano-concave / / 9 ± Plano-concave / / 9 ± Plano-concave / / 9 ± Plano-concave / / 9 ± Plano-concave / / 9 ± Plano-concave / / 9 ± Plano-concave / / 9 ± Plano-concave / / 9 ± Plano-concave / / 9 ± Plano-concave / / 9 ± Plano-convex / / 9 ± Plano-convex / / 9 ± Plano-convex / / 9 ± Plano-convex / / 9 ± Plano-convex / / 9 ± Plano-convex / / 9 * Thickness of plano-plano rear mirrors of Ø5.8 is 8. Visit for new products and prices 5.8

9 Substrate material BK7 Substrate material UVFS Substrate Radius, type Ø5. 6 Ø5.8 Ø5. / Ø5.8 Ø5. 6 Ø5.8 Ø5. / Ø5.8 8± Plano-plano - -8-i 5-8-i * 75 / -8-i 5-8-i * 95 / 69 8± Plano-concave / / 9 8± Plano-concave / / 9 8± Plano-concave / / 9 8± Plano-concave / / 9 8± Plano-concave / / 9 8± Plano-concave / / 9 8± Plano-concave / / 9 8± Plano-concave / / 9 8± Plano-concave / / 9 8± Plano-concave / / 9 8± Plano-concave / / 9 8± Plano-convex / / 9 8± Plano-convex / / 9 8± Plano-convex / / 9 8± Plano-convex / / 9 8± Plano-convex / / 9 8± Plano-convex / / 9 * Thickness of plano-plano rear mirrors of Ø5.8 is 8. Substrate material BK7 Substrate material UVFS Substrate Radius, type Ø5. 6 Ø5.8 Ø5. / Ø5.8 Ø5. 6 Ø5.8 Ø5. / Ø Plano-plano i i * / i i * 9 / 7-88 Plano-concave B 65-85B 8 / B 85-85B 5 / Plano-concave - 6-8B 65-8B 8 / 8 8-8B 85-8B 5 / Plano-concave B 65-85B 8 / B 85-85B 5 / Plano-concave - 6-8B 65-8B 8 / 8 8-8B 85-8B 5 / Plano-concave B 65-85B 8 / B 85-85B 5 / Plano-concave B 65-85B 8 / B 85-85B 5 / Plano-concave - 6-8B 65-8B 8 / 8 8-8B 85-8B 5 / Plano-concave - 6-8B 65-8B 8 / 8 8-8B 85-8B 5 / Plano-concave B 65-85B 8 / B 85-85B 5 / Plano-concave - 6-8B 65-8B 8 / 8 8-8B 85-8B 5 / Plano-concave B 65-85B 8 / B 85-85B 5 / Plano-convex 6-9B 65-9B / 9 8-9B 85-9B 57 / Plano-convex 6-9B 65-9B / 9 8-9B 85-9B 57 / Plano-convex B 65-95B / B 85-95B 57 / Plano-convex 6-9B 65-9B / 9 8-9B 85-9B 57 / Plano-convex 6-9B 65-9B / 9 8-9B 85-9B 57 / Plano-convex 6-9B 65-9B / 9 8-9B 85-9B 57 / 6 * Thickness of plano-plano rear mirrors of Ø5.8 is 8. Related Products Uncoated Curved Windows See page.8 Kinematic Mirror Mount 8- See page 8.57 Kinematic Mirror and Beamsplitter Mount 8- See page EKSMA OPTICS Tel.: Fax: info@eksmaoptics.com

10 Laser Beamsplitters Beamsplitter splits average polarized laser beam in two beams separated 9 from each other. The standard substrate thickness is. If you need thinner substrate, please, choose from chapter Precision Thin Round Windows (page.). Substrate Material S Surface Flatness UV FS λ/ at 6 S Surface Quality - scratch & dig (MIL-PRF-8B) S Surface Flatness λ/ at 6 S Surface Quality - scratch & dig (MIL-PRF-8B) Diameter Tolerance Thickness Tolerance ±.5 Parallelism arcsec Chamfer. at 5 typical Please contact us for wedged beamsplitters or choose wedged substrates from Wedge Prisms (page.) Technology Adhesion and Durability Clear Aperture Angle of Incidence 5± Back side antireflection coated R<.5% T, % s-pol Electron beam multilayer dielectric Per MIL-C-675A. Insoluble in lab solvents Exceeds central 85% of diameter S. AOI=5 Designed for average polarization: R=(R s +R p )/ and T=(T s +T p )/ Laser Damage Threshold: > mj/cm, 5 fsec pulse, 8 typical Reflection, % Transmission, % Substrate material Ø.7 Ø5. Ø5.8 8 Ø.7 / Ø5. / Ø5.8 ± 8± UV FS -7A -7A 5-7A 5 / 5 / 5 ± 7± UV FS -7A -7A 5-7A 5 / 5 / 5 5± 5± UV FS -75A -75A 5-75A 5 / 5 / 5 7± ± UV FS -77A -77A 5-77A 5 / 5 / 5 8± ± UV FS -78A -78A 5-78A 5 / 5 / 5 55 ± 8± UV FS -75A -75A 5-75A / / 55 ± 7± UV FS -75A -75A 5-75A / / 55 5± 5± UV FS -755A -755A 5-755A / / 55 7± ± UV FS -757A -757A 5-757A / / 55 8± ± UV FS -758A -758A 5-758A / / ± 8± UV FS -76A -76A 5-76A / / 5 ± 7± UV FS -76A -76A 5-76A / / 5 5± 5± UV FS -765A -765A 5-765A / / 5 7± ± UV FS -767A -767A 5-767A / / 5 8± ± UV FS -768A -768A 5-768A / / 5 8 ± 8± UV FS -77A -77A 5-77A 5 / 5 / 5 8 ± 7± UV FS -77A -77A 5-77A 5 / 5 / 5 8 5± 5± UV FS -775A -775A 5-775A 5 / 5 / 5 8 7± ± UV FS -777A -777A 5-777A 5 / 5 / 5 8 8± ± UV FS -778A -778A 5-778A 5 / 5 / 5 ± 8± UV FS -78A -78A 5-78A / / ± 7± UV FS -78A -78A 5-78A / / 5± 5± UV FS -785A -785A 5-785A / / 7± ± UV FS -787A -787A 5-787A / / 8± ± UV FS -788A -788A 5-788A / / 66 ± 8± UV FS -79A -79FA 5-79A 5 / 5 / ± 7± UV FS -79A -79FA 5-79A 5 / 5 / ± 5± UV FS -795A -795FA 5-795A 5 / 5 / ± ± UV FS -797A -797FA 5-797A 5 / 5 / ± ± UV FS -798A -798FA 5-798A 5 / 5 / 65 Visit for new products and prices 5.

11 Designed for S- polarization. Laser Damage Threshold: > mj/cm, 5 fsec pulse, 8 typical Designed for P- polarization. Laser Damage Threshold: > mj/cm, 5 fsec pulse, 8 typical Reflection, % Reflection, % Transmission, % Transmission, % Substrate material Substrate material Ø.7 Ø5. Ø5.8 8 Ø.7 Ø5. Ø5.8 8 Ø.7 / Ø5. / Ø5.8 ± 8± UV FS -7S -7S 5-7S 5 / 5 / 5 ± 7± UV FS -7S -7S 5-7S 5 / 5 / 5 5± 5± UV FS -75S -75S 5-75S 5 / 5 / 5 7± ± UV FS -77S -77S 5-77S 5 / 5 / 5 8± ± UV FS -78S -78S 5-78S 5 / 5 / 5 55 ± 8± UV FS -75S -75S 5-75S / / 55 ± 7± UV FS -75S -75S 5-75S / / 55 5± 5± UV FS -755S -755S 5-755S / / 55 7± ± UV FS -757S -757S 5-757S / / 55 8± ± UV FS -758S -758S 5-758S / / ± 8± UV FS -76S -76S 5-76S / / 5 ± 7± UV FS -76S -76S 5-76S / / 5 5± 5± UV FS -765S -765S 5-765S / / 5 7± ± UV FS -767S -767S 5-767S / / 5 8± ± UV FS -768S -768S 5-768S / / 5 8 ± 8± UV FS -77S -77S 5-77S 5 / 5 / 5 8 ± 7± UV FS -77S -77S 5-77S 5 / 5 / 5 8 5± 5± UV FS -775S -775S 5-775S 5 / 5 / 5 8 7± ± UV FS -777S -777S 5-777S 5 / 5 / 5 8 8± ± UV FS -778S -778S 5-778S 5 / 5 / 5 ± 8± UV FS -78S -78S 5-78S / / ± 7± UV FS -78S -78S 5-78S / / 5± 5± UV FS -785S -785S 5-785S / / 7± ± UV FS -787S -787S 5-787S / / 8± ± UV FS -788S -788S 5-788S / / 66 ± 8± UV FS -79S -79FS 5-79S 5 / 5 / ± 7± UV FS -79S -79FS 5-79S 5 / 5 / ± 5± UV FS -795S -795FS 5-795S 5 / 5 / ± ± UV FS -797S -797FS 5-797S 5 / 5 / ± ± UV FS -798S -798FS 5-798S 5 / 5 / 65 Ø.7 / Ø5. / Ø5.8 ± 8± UV FS -7P -7P 5-7P 5 / 5 / 5 ± 7± UV FS -7P -7P 5-7P 5 / 5 / 5 5± 5± UV FS -75P -75P 5-75P 5 / 5 / 5 7± ± UV FS -77P -77P 5-77P 5 / 5 / 5 8± ± UV FS -78P -78P 5-78P 5 / 5 / 5 55 ± 8± UV FS -75P -75P 5-75P / / 55 ± 7± UV FS -75P -75P 5-75P / / 55 5± 5± UV FS -755P -755P 5-755P / / 55 7± ± UV FS -757P -757P 5-757P / / 55 8± ± UV FS -758P -758P 5-758P / / ± 8± UV FS -76P -76P 5-76P / / 5 ± 7± UV FS -76P -76P 5-76P / / 5 5± 5± UV FS -765P -765P 5-765P / / 5 7± ± UV FS -767P -767P 5-767P / / 5 8± ± UV FS -768P -768P 5-768P / / 5 8 ± 8± UV FS -77P -77P 5-77P 5 / 5 / 5 8 ± 7± UV FS -77P -77P 5-77P 5 / 5 / 5 8 5± 5± UV FS -775P -775P 5-775P 5 / 5 / 5 8 7± ± UV FS -777P -777P 5-777P 5 / 5 / 5 8 8± ± UV FS -778P -778P 5-778P 5 / 5 / 5 ± 8± UV FS -78P -78P 5-78P / / ± 7± UV FS -78P -78P 5-78P / / 5± 5± UV FS -785P -785P 5-785P / / 7± ± UV FS -787P -787P 5-787P / / 8± ± UV FS -788P -788P 5-788P / / 66 ± 8± UV FS -79P -79FP 5-79P 5 / 5 / ± 7± UV FS -79P -79FP 5-79P 5 / 5 / ± 5± UV FS -795P -795FP 5-795P 5 / 5 / ± ± UV FS -797P -797FP 5-797P 5 / 5 / ± ± UV FS -798P -798FP 5-798P 5 / 5 / EKSMA OPTICS Tel.: Fax: info@eksmaoptics.com

12 Broadband Laser Beamsplitters Designed for S- polarization. Laser Damage Threshold: >5 mj/cm, 5 fsec pulse, 8 typical Reflection, Transmission, Substrate % % material Ø5. Ø5.8 6 Ø5. / Ø ± 9± UV FS -778SB 5-778SB / ±5 8±5 UV FS -77SB 5-77SB 85 / 7 88 ±5 7±5 UV FS -77SB 5-77SB 85 / 7 88 ±5 6±5 UV FS -77SB 5-77SB 85 / ±5 5±5 UV FS -775SB 5-775SB 85 / ±5 ±5 UV FS -776SB 5-776SB 9 / ±5 ±5 UV FS -777SB 5-777SB 95 / ±5 ±5 UV FS -778SB 5-778SB 95 / ± ± UV FS -779SB 5-779SB 5 / ± 5± UV FS -7795SB SB 5 / 7 Designed for P- polarization. Laser Damage Threshold: >5 mj/cm, 5 fsec pulse, 8 typical Reflection, Transmission, Substrate % % material Ø5. Ø5.8 6 Ø5. / Ø ± 9± UV FS -77PB 5-77PB 85 / ±5 8±5 UV FS -77PB 5-77PB 85 / ±5 75±5 UV FS -775PB 5-775PB / ±5 7±5 UV FS -77PB 5-77PB 85 / ±5 6±5 UV FS -77PB 5-77PB 85 / ±5 5±5 UV FS -775PB 5-775PB 85 / ±5 ±5 UV FS -776PB 5-776PB 9 / ±5 ±5 UV FS -777PB 5-777PB 95 / ±5 5±5 UV FS -7775PB PB 95 / ±5 ±5 UV FS -778PB 5-778PB 95 / ± ± UV FS -779PB 5-779PB 5 / ± 5± UV FS -7795PB PB 5 / Related Products Uncoated Elliptical Mirrors See page.9 Kinematic Mirror and Beamsplitter Mount 8-- See page 8.57 Adapter for Beamsplitter at 5º 8-6 See page 8.77 Flipping Mirror / Beamsplitter Mount 8-55 See page 8.8 T, % Reflection GDD, fs s-pol s-pol -775SB -778SB -779SB SB -778SB -779SB SB. 7 88, AOI=5-778SB. 7 88, AOI=5-779SB. 7 88, AOI=5 T, % Reflection GDD, fs p-pol PB -778PB -779PB PB p-pol -778PB PB PB , AOI=5-778PB , AOI=5-779PB , AOI=5 Visit for new products and prices 5.

13 THIN Lenses Very thin: edge thickness varies from.5~.9 Centre thickness varies from ~ Plano-Convex or Plano-Concave type Uncoated, AR -5, AR 8-, AR 5-5, AR 55+, AR 76-8, AR -6, 7-9, 5-9 Thin Plano-Convex Lenses, Ø5. Uncoated lenses. Material UVFS. Diameter D = Ø5. CT D Centre Thickness CT, ET F Plano-convex lens Edge Thickness ET, EKSMA OPTICS introduces Ultrathin Lenses series for femtosecond applications. Femtosecond application often requires Low Group Delay Dispersion optics. Our below given Thin UVFS lenses are ideal in this case. Focal 8 CT ET F Other sizes and focal length are available on request. D Plano-concave lens -9ET ET ET ET ET. 8 -ET. 8-5ET ET.6 8 -ET ET ET ET ET.. 8 Material Surface quality Clear aperture Diameter tolerance Thickness tolerance Surface irregularity Concentricity Paraxial focal length UV FS - scratch & dig (MIL-PRF-8B) 9% of the diameter +., -. ±. 6 arcmin 8 Thin Plano-Convex Lenses, Ø.7 Uncoated lenses. Material UVFS. Diameter D = Ø.7 Thin Plano-Concave Lenses, Ø.7 Uncoated lenses. Material UVFS. Diameter D = Ø.7 Centre Thickness CT, Centre Thickness CT, Edge Thickness ET, Edge Thickness ET, Focal 8 Focal 8-6ET ET ET ET ET ET ET ET ET ET ET ET. 6-5ET ET ET ET ET ET ET ET ET ET ET EKSMA OPTICS Tel.: Fax: info@eksmaoptics.com

14 Available Standard s for Thin Lenses Technology Electron beam multilayer dielectric Adhesion and Durability Per MIL-C-675A. Insoluble in lab solvents Clear Aperture Exceeds central 85% of diameter Angle of Incidence Coated Surface Flatness λ/ at 6 over clear aperture Available s suffix Wavelength Reflection Laser Damage Price per unit per surface Threshold to be addded, /pc. AR 76 8 R<.5% mj/cm 9 BBAR 7 9 R<.5% 5 mj/cm 5 UBBAR 5 9 R<.5% 5 mj/cm 6 AR 6 R<.% mj/cm 9 AR R<.% mj/cm 9 AR 8 R<.5% mj/cm 9 AR 5 R<.5% mj/cm 9 ARD 55 + R<.5% mj/cm R, % R, % R, % Available IBS s for Thin Lenses Available s suffix Technology Adhesion and Durability Clear Aperture Angle of Incidence Coated Surface Flatness Wavelength Reflection per surface Ion Beam Sputtering (IBS) Per MIL-C-675A. Insoluble in lab solvents Exceeds central 85% of diameter λ/ at 6 over clear aperture Laser Damage Threshold Price per unit to be addded, /pc. AR8HT 76 8 R<.% mj/cm 5 ARB8HT 7 9 R<.% mj/cm 5 ARHT 8 R<.% 5 mj/cm 5 ARD8HT + 8 R<.% 5 mj/cm 5 ARHT 6 R<.% mj/cm 5 AR55HT 5 5 R<.% 5 mj/cm 5 ARHT 5 R<.% 5 mj/cm 5 ARDHT 55 + R<.% 5 mj/cm 5 Ordering of Coated Thin Lenses Please choose the coating and add its suffix to the lens code. Example: UVFS Thin Plano-Convex Lens, focal length 75, coated AR / 76-8 Code: -9ET + AR, Price: = 9 /pc. Lens code code Lens price price Visit for new products and prices 5.

15 AR Coated Lens Kits Large UV FS Lenses Kit ( pcs.) Large Lenses Kit Lens kits contain different types (planoconvex, biconvex, plano-concave, biconcave) of Ø5. lenses with various focal lengths. Kits are packed into foam lined plastic the new plastic boxes for safe handling and storage. Large lens kit consists of lenses and small lens kit consists of 5 lenses made of UVFS. Kits are available with laser line and broadband multilayer anti-reflection coatings. Reflection, % Reflection, % Reflection, % , AOI= , AOI= , AOI= Code --AR- R<% 9 --AR , R<.5% 9 --AR , R<.% --AR , R<.8% --AR65- 65, R<% --AR66 66, R<.% --AR R<.5% 9 --AR55 55, R<.5% 9 --AR R<.% --AR58 58, R<.% Large UV FS Lens Kit Code Type Dia, F, Code Type Dia, F, -E pl/cx 5. -8E bi/cx 5. -5E pl/cx E bi/cx E pl/cx E bi/cx 5. -E pl/cx E bi/cx E pl/cx 5. -E bi/cx 5. -6E pl/cx E bi/cx 5. -7E pl/cx E bi/cx E pl/cx 5. -6E bi/cx 5. -E pl/cx E pl/cv E pl/cx 5. -9E pl/cv E pl/cx E pl/cv E pl/cx 5. -7E pl/cv E pl/cx E pl/cv E pl/cx E pl/cv E pl/cx E bi/cv E pl/cx 5. -8E bi/cv E bi/cx E bi/cv E bi/cx 5. -6E bi/cv E bi/cx E bi/cv E bi/cx E bi/cv 5. - Small UV FS Lenses Kit (5 pcs.) Code -5-AR- R<% 8-5-AR , R<.5% 66-5-AR , R<.% 5-5-AR , R<.8% 6-5-AR65- 65, R<% 67-5-AR66 66, R<.% 8-5-AR R<.5% -5-AR55 55, R<.5% -5-AR R<.% 5-5-AR58 58, R<.% 8 Small UV FS Lens Kit Code Type Dia, F, Code Type Dia, F, -E pl/cx 5. -E pl/cx E pl/cx E pl/cx 5. -9E pl/cx E pl/cv E pl/cx 5. -9E pl/cv E pl/cx E pl/cv E pl/cx E pl/cv E pl/cx 5. -7E pl/cv E pl/cx EKSMA OPTICS Tel.: Fax: info@eksmaoptics.com

16 Thin Film Polarizers (56º Angle of Incidence) Thin film polarizers separate s- and p- polarization components. Due to their high laser damage threshold, thin film polarizers can be used as an alternative to Glan-Taylor laser polarizing prisms or cube polarizing beamsplitters. Femtoline thin film laser polarizers are designed for use in high energy lasers. They can be used for Yb:KYW/KGW or Ti:Sapphire laser fundamental wavelengths or their harmonics, as well as intracavity Q-switch hold-off polarizers. The most efficient way to use these polarizers is at Brewster's angle 56 ±. Thin Film Polarizers with High Extinction Ratio Material Surface quality Brewster angle BK7, UV FS Angle of incidence (AOI) 56 ± Laser damage threshold s-pol D - scratch & dig (MIL-PRF-8B) T p-pol > mj/cm, 5 fsec pulse, 8 typical Round Polarizers. Material UV FS. Tp > 98%, Ts <.%. Extinction ratio for transmitted light Tp/Ts: >: Diameter D, Thickness T, -HE HE HE HE 5. 6 High Transmission Thin Film Polarizers Round Polarizers. Material UV FS. Rs / Tp > 99.5 / 99.%. Extinction ratio for transmitted light Tp/Ts >: Diameter D, Thickness T, -HT HT HT HT 5.. Rectangular Polarizers. Material UV FS. Tp > 98%, Ts <.%. Extinction ratio for transmitted light Tp/Ts: >: Rectangular dimensions Thickness Length, Width, T, -78HE HE 6 Ultra High Transmission Thin Film Polarizers Round Polarizers. Material UV FS. Ts <.%, Rp <.%. Extinction ratio for transmitted light Tp/Ts >: Diameter D, Thickness T, -56UHT UHT 5.. new T / R, % s p AOI, 5 T s Rp T s Rp T / R, % s p AOI, 8 T s Rp T s Rp T / R, % s p AOI, 6 T s Rp T s Rp T / R, % s p T / R, % s p 6 T / R, % s p HT. High Rs/Tp > 99.5/99. %, AOI= HT. High 55, Rs/Tp > 99.5/99. %, AOI= HT. High Rs/Tp > 99.5/99. %, AOI=56 Visit for new products and prices 5.6

17 Standard Thin Film Polarizers Percent transmission Transmission, % Transmission, % Transmission, % E. 78-8, Rs/Tp > 99.5/95. %, AOI= Please contact us if you need thin film laser polarizers of other wavelengths or other types of substrates. Related Products Glan Laser Polarizing, Wollaston Prisms See page.55 Adapters for Polarizer at , 8-8 See page 8.79 Variable Attenuators for Linearly Polarized Laser Beam 99-7 See page 5. Polarization s p p-pol s-pol E. 8, Rs/Tp > 99.5/95. %, AOI=56 Polarization s p E. -5, Rs/Tp > 99.5/95. %, AOI=56 Round Polarizers. Material BK7. Rs / Tp > 99.5 / 95.%. Extinction ratio for transmitted light Tp/Ts >: Round Polarizers. Material UV FS. Rs / Tp > 99.5 / 95.%. Extinction ratio for transmitted light Tp/Ts >: Diameter D, Diameter D, Thickness T, Thickness T, -E E.7. -E E E E E E E E E E E E E E E E E E E Rectangular Polarizers. Material UV FS. Rs / Tp > 99.5 / 95.%. Extinction ratio for transmitted light Tp/Ts >: -E E E E E E E E E E E E E E E Rectangular Polarizers. Material BK7. Rs / Tp > 99.5 / 95.%. Extinction ratio for transmitted light Tp/Ts >: Rectangular dimensions Thickness T, Length, Width, Rectangular dimensions Thickness T, Length, Width, EKSMA OPTICS Tel.: Fax: info@eksmaoptics.com

18 Thin Film Polarizers (7º Angle of Incidence) new Broadband thin film polarizers separate the s- and p-polarization components in broad region at 7 angle of incidence (AOI). These polarizers are designed to be used in high energy laser systems, typically as extracavity attenuators for femtosecond lasers. Polarizers are made form UV fused silica and feature a high laser damage threshold up to 5 mj/cm. 7 s-pol T D p-pol Substrate material UV FS Surface quality - scratch & dig (MIL-PRF-8B) Transmitted wavefront distortion 6 Clear aperture >9% of diameter Angle of incidence (AOI) 7 ± Parallelism < arcsec Rectangular Polarizers. Material UV FS. Rs / Tp > 99.5 / 95.%. Extinction ratio for transmitted light Tp/Ts >: Rectangular dimensions Thickness T, Length, Width, Centre wavelength, Operating wavelength region, -696BBi BBi Thin Film Polarizers (5º Angle of Incidence) These thin film polarizers separate or combine the s- and p- polarization components at 5 angle of incidence. They are designed for use in high energy lasers. Polarizers are made from UV FS and feature high laser damage threshold reaching J/cm at 6. 5 s-pol T D p-pol TF Polarizers with High Extinction Ratio Round Polarizers. Material UV FS. Tp > 98%, Ts <.%. Extinction ratio for transmitted light Tp/Ts: >: Diameter D, Thickness T, -i5he i5he i5HE i5HE i5HE i5HE Substrate material UV FS Surface quality - scratch & dig (MIL-PRF-8B) Clear aperture >9% of diameter Angle of Incidence (AOI) 5 ± Parallelism < arcsec Standard Thin Film Polarizers Round Polarizers. Material UV FS. Rs / Tp > 99.5 / 95.%. Extinction ratio for transmitted light Tp/Ts >: Diameter D, Thickness T, -i i i i i i Visit for new products and prices 5.8

19 Quartz Retardation WAVEPLATES Quartz Retardation Plates are made of material enabling linear birefringence. These plates are made of high quality optical grade crystalline quartz, featuring high damage threshold. Retardation plates rotate polarization s direction (λ/) or convert linear into circular polarization or vice versa (λ/). Quartz retardation plates are supplied mounted and AR coated. Zero Order optically contacted WAVEPLATES Easily aligned Temperature insensitive Moderately insensitive to wavelength Zero order plates are comprised of two different plates cut parallel to their optical axis. This construction makes plates less dependent on temperature. The plates are polished to different thicknesses enabling one to achieve required retardation difference. These component plates have orthogonal optic axis directions, so that the roles of the ordinary and extraordinary rays are interchanged in passing from one plate to another. The thickness of the plate determines the phase shift between the ordinary and extraordinary beams for any specific wavelength. Related Products Achromatic Air-Spaced Waveplates See page.59 Polarizer Holder 8-8 See page 8.87 High Precision Rotation Polarizer, Waveplate Mount 8-86 See page 8.89 ZERO ORDER AIR-SPACED WAVEPLATES For high power laser applications Housing Accessories Polarizer Holder 8-8 See page 8.87 Material Optical axis Clear aperture Ring mount outer diameter Surface quality Wavefront distortion Parallelism Single crystal quartz normal to facet on circumference of retarder Ø scratch & dig (MIL-PRF-8B) 6 < arcsec AR coating R <.5% Laser damage threshold > mj/cm, 5 fsec pulse, 8 typical Center AR coating Retardation λ/ Retardation λ/ wavelength, range, no. no Material Single crystal quartz Optical axis normal to facet on circumference of retarder Clear aperture Ø7 Ring mount outer diameter / -. Wavefront distortion 6 Surface quality - scratch & dig (MIL-PRF-8B) Parallelism < arcsec AR coating R <.5% Laser damage threshold mj/cm, 5 fsec pulse, 8 typical Center AR coating Retardation λ/ Retardation λ/ wavelength, range, no. no EKSMA OPTICS Tel.: Fax: info@eksmaoptics.com

20 Zero Order Dual Wavelength WAVEPLATES When optical axis is turned by 5 rees to input polarization, the waveplate rotates polarization of Ti:Sapphire laser fundamental (8 ) by 9 rees and the polarization of Ti:Sapphire second harmonic ( ) remains the same. Polarization purity, % Polarization purity of zero order dual waveplate. λ/@8 + λ/ Material Optical axis Clear aperture Ring mount outer diameter Surface quality Wavefront distortion Parallelism AR coating Code Description optically contacted λ/@8 + λ@ air-spaced λ/@8 + λ@ optically contacted λ/@ + λ@55 air-spaced λ/@ + λ@55 Single crystal quartz normal to facet on circumference of retarder Ø /-. - scratch & dig (MIL-PRF-8B) 6 < arcsec R<.5% AR coated Laser Damage Threshold > mj/cm, 5 fsec pulse, 8 typical mj/cm, 5 fsec pulse, 8 typical > mj/cm, 5 fsec pulse, typical mj/cm, 5 fsec pulse, typical Application Ti: Sapphire Ti: Sapphire 5 Yb: KGW/KYW 5 Yb: KGW/KYW Polarization purity, % Polarization purity of zero order dual waveplate. λ/@ + λ/55 Housing Accessories Polarizer Holder 8-8 See page 8.87 Low Order WAVEPLATES Thickness.5.5 Thinner than multiple order Low order plates are less temperature sensitive and temperature dependent than multiple order plates. These plates are suitable for high and low power applications. Related Products Low Order Plates of other wavelengths See page.6 High Precision Rotation Polarizer, Waveplate Mount 8-86 See page 8.89 Material Optical axis Clear aperture Ring mount outer diameter Surface quality Wavefront distortion Parallelism Single crystal quartz normal to facet on circumference of retarder Ø /-. - scratch & dig (MIL-PRF-8B) 6 < arcsec AR coating R <.5% Laser damage threshold mj/cm, 5 fsec pulse, 8 typical Retardation λ/ Retardation λ/ no. no Visit for new products and prices 5.

21 Multiple Order Dual Wavelength WAVEPLATES Related Products Dual Wavelength Plates of other wavelengths See page.6 High Precision Rotation Polarizer, Waveplate Mount 8-86 See page 8.89 Material Optical axis Wavefront distortion Clear aperture Ring mount outer diameter Surface quality Parallelism Polarization Plane Rotators Made of crystalline quartz Intended to rotate a beam polarization plane strictly to an appropriate angle using circular birefringent effect Material Optical axis Clear aperture Ring mount outer diameter Single crystal quartz Normal to faces S, S of rotator Ø /-. Surface quality - scratch & dig (MIL-PRF-8B) Wavefront distortion 6 Parallelism < arcsec AR coating R <.5% Laser damage threshold mj/cm, 5 fsec pulse, 8 typical Polarization plane rotators for any wavelength from to are available. Single crystal quartz normal to facet on circumference of retarder 6 Ø / -. - scratch & dig (MIL-PRF-8B) < arcsec AR coating R <.5% Nominal thickness of waveplate Laser damage threshold.-. > mj/cm, 5 fsec pulse, 8 typical Retardation and Wavelength Compared to a waveplate, a rotator has an intrinsic advantage, being independent of rotation around its own optical axis. It needs no adjustment, only to be installed normal to incident radiation. A polarization plane rotator is normally used for the specific wavelength. It is only slightly dependent on ambient temperature. Center wavelength, S T S Rotation angle of polarization plane, D Clear aperture AR coating range, Related Products Polarization plane rotators of other wavelengths See page.6 Kinematic Mirror and Beamsplitter Mount 8- See page 8.57 Kinematic Positioning Mount 8-9 See page EKSMA OPTICS Tel.: Fax: info@eksmaoptics.com

22 Group Velocity Delay Compensation PLATES Compensation plates are made of calcite. Plates are available with different orientation for different Group Velocity Delay compensation starting from tens of femtosecond up to tens of picosecond delay compensation. Standard GVD compensation plates are adjusted for required compensation by angular tuning changing the angle of incidence. Suggested AOI is -5 to +5, however they also can operate at larger AOI. Standard plates are made of 6 aperture, clear aperture Ø and mounted in to ring holder. The optical axis is at special orientation non parallel to faces of plate. AR coatings for custom wavelengths are also available. Standard GVP compensation plates have clear aperture Ø. However, on special requests clear apertures up to diameter can be produced. Material Clear aperture Ring mount outer diameter Surface quality Wavefront distortion Parallelism AR coating Natural Calcite Ø / -. - scratch & dig (MIL-PRF-8B) λ/@ 6 < arc min R<.5% 76-8 and R<% at 8- Standard Calcite plates for delay compensation between 8 ("o" polarization) and ("e" polarization) pulses Code Delay compensation range* s 5-5 fsec fsec fsec fsec 8+ 7 *GVD compensation range at Angle Of Incidence from -5º to +5º. Delay compensation, fsec Delay compensation, fsec AOI of 8 and beams, AOI of 8 and beams, 5-. Group velocity delay between 8 and pulses in compensation plates at different angle of incidence. pulse ( e pol) is faster than 8 pulse ( o pol). Delay compensation, fsec AOI of 8 and beams, 5-. Related Products Delay compensation, fsec AOI of 8 and beams, 5-5. Thin BBO Crystals for SHG and THG of Ti:Sapphire laser wavelengths See pages 5.9 Femtokits for THG of Femtosecond Ti:Sapphire Lasers See page 5. Positioning Mount 8-99 for Nonlinear Crystal Housing See page.6 Visit for new products and prices 5.

23 Variable Attenuator for Femtosecond Linearly Polarized Laser Beam 99-7 Note: Movable base 8-9, Rod Holder 8-5- and standard rod should be ordered seperately. Divides laser beam into two parallel beams of manually adjustable intensity ratio Large dynamic range Transmitted beam shift ~.5 High Optical damage threshold Weight.5 kg Related Products Femtoline Zero Order Optically Contacted/Air-Spaced Plates See page 5.9 Femtoline Thin Film Laser Polarizers See page 5.6 This variable attenuator/beamsplitter consists of special design opto-mechanical Adapter and precision opto-mechanical Holder Two Thin Film Brewster type polarizers, which reflect s-polarized light while transmitting p-polarized light, are housed into Adapter. Quartz Half Waveplates are housed in rotating holder The intensity ratio of those two beams may be continuously varied without alteration of other beam parameters by rotating the waveplate. The intensity of either exit beam, or their intensity ratio, Linearly polarized beam Half Waveplate Aperture diameter 7 Damage threshold > mj/cm, 5 fs pulse at 8, typical for high power laser applications > mj/cm, 5 fs pulse at 8, typical Time dispersion t< fs for fs Ti:Sapphire laser pulses Polarization Contrast (after st polarizer) >: Polarization Contrast (after nd polarizer) >:5 Motorized Variable Attenuator for Linearly Polarized Laser Beam 99-7M See page 7. Thin Film Polarizer Thin Film Polarizer S-pol attenuation range ~.5 99.%. P-pol attenuation range ~.5 95.% B B B B Zero order optically contacted half waveplate is housed in rotating holder for high power femtosecond applications (Laser damage threshold: > mj/cm, 5 fs pulse at 8, typical). can be controlled over a wide dynamic range. P-polarization could be selected for maximum transmission, or high-purity s-polarization could be reflected when maximum attenuation of the transmitted beam takes place. The holder 8-97 allows to adjust Angle Of Incidence of the Thin Film Brewster type polarizers by ± and to get the maximum polarization contrast. Transmission, % Waveplate angle, For High Power Laser Applications Beam dumps 99-8, 99-8 See page H H H HB H HB H HB H HB Zero Order Air-Spaced half waveplate is housed in rotating holder for high power femtosecond applications (Laser damage threshold: > mj/cm, 5 fs pulse at 8, typical). Neutral Density Filters See page. 5. EKSMA OPTICS Tel.: Fax: info@eksmaoptics.com

24 Broadband Variable Attenuator for Femtosecond Laser Pulses 99-7HBBi7 new HBBi HBBi7M Divides laser beam into two parallel beams of manually adjustable intensity ratio Large dynamic range Transmitted beam shift ~.6 High optical damage threshold This variable attenuator/beamsplitter consists of a special design opto-mechanical adapter and a precision opto-mechanical holder Two thin film polarizers, operating at AOI=7 and reflecting s-polarized light while transmitting p-polarized light, are housed into the adapter. A quartz zero order air-spaced half waveplate is housed into the rotating holder The intensity ratio of outgoing two parallel beams may be continuously varied without alteration of other beam parameters by rotating the waveplate. The intensity of the exit beam or outgoing beams intensity ratio can be controlled over a wide dynamic range. Linearly polarized beam Half Waveplate Thin Film Polarizer Thin Film Polarizer S-pol attenuation range ~.5 99.% 8 P-pol attenuation range ~.5 95.% P-polarized beam is transmitted straightly with a.6 shift and s-polarized beam (after reflections) is parallel to the outgoing p-polarized beam, just separated by 8. The 8-97 holder allows to adjust angle of incidence of the thin film polarizers by ± and to achieve the maximum polarization contrast. Aperture diameter Operating bandwidth Damage treshold 5 mj/cm pulsed at 8, 5 fsec, 5 Hz Polarization contrast (after st polarizer) >: Polarization contrast (after nd polarizer) >:5 Transmission, % Waveplate angle, Manual attenuators Related Products Neutral Density Filters See page. Femtoline Zero Order Optically Contacted / Air-Spaced Plates See page 5.9 Femtoline Thin Film Laser Polarizers See page x M HBBi7 Ø9 7. MAX HBBi HBBi Motorized attenuators HBBi7M HBBi7M for M6 screw clearance slots HBBi7M 5 Visit for new products and prices 5.

25 Variable Attenuator for Femtosecond Linearly Polarized Laser Beam 99-7 Note: Solid Base Height Extender 8- and Standard Rod 8-- should be ordered separately Divides laser beam into two beams of manually adjustable intensity ratio separated by 68 angle Large dynamic range Transmitted beam shift ~.5 High Optical damage threshold Weight.5 kg Related Products This variable attenuator/beamsplitter consists of special design opto-mechanical adapter for polarizer at A or 8-8A and precision opto-mechanical holder Thin Film Brewster type polarizer, which reflect s-polarized light at 56 while transmitting p-polarized light, is housed into adapter for polarizer at 56. Quartz Half Waveplates are housed in rotating holder The intensity ratio of those two beams may be continuously varied without alteration of other beam parameters by rotating the waveplate. The intensity of 68 p pol. s pol. Attenuation range.5%-95% either exit beam, or their intensity ratio, can be controlled over a wide dynamic range. P-polarization could be selected for maximum transmission, or high-purity s-polarization could be reflected when maximum attenuation of the transmitted beam takes place. The holder 8-97 allows to adjust Angle Of Incidence of the Thin Film Brewster type polarizer by ± and to get the maximum polarization contrast. Aperture diameter Damage threshold > mj/cm, 5 fs pulse at 8, typical for high power laser applications > mj/cm, 5 fs pulse, 8 typical Time dispersion t< fs for fs Ti:Sapphire laser pulses Polarization Contrast >: Attenuation range 5%-99.5% 56 Light direction Linear polarized light Half waveplate B B B B Zero order optically contacted half waveplate is housed in rotating holder 8-97 (laser damage threshold: > mj/cm, 5 fs pulse at 8, typical). Transmission, % Waveplate angle, For High Power Laser Applications H H H HB H HB H HB H HB Zero Order Air-Spaced half waveplate is housed in rotating holder 8-97 (laser damage threshold: > mj/cm, 5 fs pulse at 8, typical). Neutral Density Filters See page. Femtoline Zero Order Optically Contacted / Air-Spaced Plates See page 5.9 Motorized Variable Attenuator for Linearly Polarized Laser Beam 99-7M See page 7.8 Femtoline Thin Film Laser Polarizers See page EKSMA OPTICS Tel.: Fax: info@eksmaoptics.com

26 Variable Attenuator for Femtosecond Laser Pulses 99-7 Divides laser beam into two beams of manually adjustable intensity ratio separated by 68 angle Large dynamic range Trasmitted beam shift ~ High optical damage threshold Motorized version 99-7M available online This variable attenuator/beamsplitter consists of Polarizer Holder 8-9- and Kinematic Mirror/Beamsplitter Mount UVFS Thin Film Brewster type polarizer diameter 5.8, which reflect s-polarized light while transmitting p-polarized light, is housed into Beamsplitter Mount A quartz Zero Order (optically contacted) Half Waveplate diameter 5. (for femtosecond applications) or Zero Order Air-Spaced Half Waveplate (for high power applications) is housed in rotating polarizer holder 8-9- and placed in the incident linearly polarized laser beam. The intensity ratio of those two separted and different polarized beams may be continuously varied without alteration of other beam parameters by rotating the waveplate. The intensity of either exit beam, or their intensity ratio, can be controlled over a wide dynamic range. P-polarization could be selected for maximum transmission, or high-purity s-polarization could be reflected when maximum attenuation of the transmitted beam takes place. The holder allows to adjust Angle Of Incidence of the Thin Film Brewster type polarizers by ±.5 and to get the maximum extinction contrast. The mounts are on rods, rod holders and Movable Base 8-9. The optical axis height from the table top can be adjusted in the range Other height can be offered as custom changing the standard rods and rod holders into higher. Transmission, % Waveplate angle, Clear Aperture diameter Damage threshold > mj/cm, 5 fs pulse at 8, typical for high power applications > mj/cm, 5 fs pulse at 8, typical Polarization Contrast >: Transmitted beam shift ~ Weight.5 kg 5 For High Power Laser Applications for M6 screws clearance slots Related Products Neutral Density Filters See page B B A quartz Zero Order (optically contacted) Half Waveplate Ø5. is housed in rotating holder Femtoline Thin Film Laser Polarizers See page H H 99-7-H H H HB H HB -5 5 A quartz Zero Order Air-Spaced Half Waveplate clear aperture Ø is housed in rotating holder Femtoline Zero Order Optically Contacted / Air-Spaced Plates See page 5.9 Motorized Variable Attenuator for Linearly Polarized Laser Beam 99-7M For more information visit Visit for new products and prices 5.6

27 Variable Attenuator for Femtosecond Laser Pulses 99-7 Divides laser beam into two beams of manually adjustable intensity ratio separated by 68 angle Large dynamic range Trasmitted beam shift ~. High optical damage threshold Max A This variable attenuator/beamsplitter consists of Polarizer Holder 8-8-A and Kinematic Mirror/Beamsplitter Mount UVFS Thin Film Brewster type polarizer Ø76., which reflect s-polarized light while transmitting p-polarized light, is housed into Beamsplitter Mount A quartz Zero Order (optically contacted) Half Waveplate Ø or Zero Order Air-Spaced Half Waveplate Ø is housed in rotating polarizer holder 8-8-A and placed in the incident linearly polarized laser beam. The intensity ratio of those two separated and different polarized beams may be continuously varied without alteration of other beam parameters by rotating the waveplate. The intensity of either exit beam, or their intensity ratio, can be controlled over a wide dynamic range. P-polarization could be selected for maximum transmission, or high-purity s-polarization could be reflected when maximum attenuation of the transmitted beam takes place. Clear Aperture diameter Damage threshold for high power applications The holder allows to adjust Angle Of Incidence of the Thin Film Brewster type polarizers by ±.5 and to get the maximum extinction contrast. The mounts are on rods, rod holders and Movable Base 8-9. The optical axis height from the table top can be adjusted in the range Other height can be offered as custom changing the standard rods and rod holders into higher. Transmission, % 6 Polarization Contrast >: Transmitted beam shift Weight B B A quartz Zero Order (optically contacted) Half Waveplate Ø is housed in rotating holder 8-8-A. Linear polirized light Waveplate angle, > mj/cm, 5 fs pulse at 8, typical > mj/cm, 5 fs pulse at 8, typical ~..6 kg x For High Power Laser Applications s-pol p-pol H H H H H HB H HB A quartz Zero Order Air-Spaced Half Waveplate Ø is housed in rotating holder 8-8-A. 5.7 EKSMA OPTICS Tel.: Fax: info@eksmaoptics.com

28 FemtoLine Laser & Nonlinear Crystals FemtoLine Laser Crystals Ti:Sapphire (Titanium Doped Sapphire Ti:Al O ) laser line and harmonics Ti:Sapphire laser crystal is used as a gain medium for tunable lasers and femtosecond solid-state lasers. Lasers based on Ti:Sapphire crystal are mainly used to generate ultrashort femtosecond pulses. The lasing band of Ti:Sapphire is 66-5, while coon pump wavelength is frequency doubled Nd:YAG laser line at 5 or Argon Ion laser lines at 9-5. The peak of emission in Ti:Sapphire is at 79-8 wavelength. Intensity, a.u absorption fluorescence Material physical and laser properties Standard product specifications Chemical formula Ti + :Al O Crystal structure Hexagonal Lattice constants a=.78, c=.957 Density.98 g/cm Mohs hardness 9 Thermal conductivity. cal/( C sec cm) Specific heat. cal/g Melting point 5 C Laser action -Level Vibronic Fluorescence lifetime. µsec (T=K) Tuning range 66 5 Absorbtion range 6 Emission peak 795 Absorption peak 88 Refractive 8 Frequency Conversion of Ti:Sapphire laser wavelengths Frequency doubling and tripling allow access to the green, blue and ultraviolet spectral regions. While the frequency conversion by Optical Parametric Generation offers wide tuning range in the nearinfrared spectral region, it is often sufficient to tune the Ti:sapphire wavelength for tuning the OPO, rather Orientation optical axis C normal to rod axis Ti O concentration..5 wt % Figure of Merit > 5 Size up to dia and up to length End configurations flat/flat or Brewster/Brewster End flatness 6 Parallelism arcsec Surface finishing -5 scratch & dig Wavefront distortion λ/ inch Note: To inquire or order a finished Ti:Sa laser rod, please provide detailed specifications. Dopant concentration, size of crystal and end configuration are essential specifications. than tuning the OPO itself, e.g. by actively affecting the phase-matching conditions. Further wavelength extension to mid infrared range is possible by Difference Frequency Generation employing signal and idler wavelength pulses obtained from OPO. Crystals selection for Ti:Sapphire laser frequency conversion Thin BBO crystals for range Thin BBO crystals for 8 range Thin BBO crystals for pump 8 5 range Thin BBO crystals for pump 8 range AgGaS crystals for DFG 5- range Visit for new products and prices 5.8

29 Thin BBO crystals for SHG and THG of Ti:Sapphire laser wavelength Free Standing BBO Crystals The crystals down to µm can be supplied as free standing crystals not attached to the support. However, ring mounts are highly recoended for safe handling of these thin crystals. Minimum aperture of free standing BBO is 5 5, maximum aperture is. The tolerance is ±5 µm for crystals of thickness down to µm and ± µm for crystals of thickness down to µm. Optically contacted crystals BBO crystals less than µm thickness can be supplied optically contacted on UV Fused Silica substrate sizes Standard specifications of ultrathin BBO crystals Flatness Parallelism Perpendicularity Angle tolerance Aperture tolerance Surface quality Clear aperture Laser damage threshold or. Other sizes of substrates are also available on request. Minimum aperture of optically contacted BBO is 5 5, maximum aperture is. The tolerance of crystal thickness is +/-5 microns. Protective s for BBO crystals P-protective coating is a single or two layer antireflection coating made at specified wavelength range. Typical reflection values are R<% in the mid range, R<% at the edges. P coating is highly recoended for ultrashort pulse applications and features low dispersion and very high laser damage threshold. 6 < arcsec < 5 arcmin < arcmin ±. -5 scratch & dig (MIL-PRF-8B) >9% of full aperture > GW/cm, fsec pulse, W avelength λ, 8 typical, 5 Hz Typical P-coating for BBO SHG@8 application EKSMA OPTICS recoends the following thickness BBO crystals depending on application and fundamental wavelength pulse duration, assuming it is spectrum limited Gausian pulse. Application Pulse duration, fs Thickness,.5. Type, 8 Θ=9., φ= Type, 8 Θ=,, φ= Reflection, % EKSMA OPTICS Tel.: Fax: info@eksmaoptics.com

30 FemtoLine Laser & Nonlinear Crystals BBO for 8 BBO crystal, Thickness =.5 * Code Aperture, UV FS support size, θ, φ, BBO-6H P/P@-8 98 BBO-8H P/P@-8 99 BBO-H 9. 9 P/P@-8 * All BBO crystals of thickness less than μm are optically contacted onto UV FS support. All crystals are mounted into open ring holders. SHG BBO crystals, Thickness =. Code Aperture, θ, φ, BBO-6H P/P@-8 55 BBO-8H P/P@-8 7 BBO-H 9. 9 P/P@-8 8 BBO-H 9. 9 P/P@-8 95 BBO-5H P/P@-8 BBO-H 9. 9 P/P@ BBO-H 9. 9 P/P@ SHG BBO crystal, Thickness =. Code Aperture, θ, φ, BBO-6H P/P@-8 55 BBO-8H P/P@-8 7 BBO-H 9. 9 P/P@-8 79 BBO-H 9. 9 P/P@-8 85 BBO-5H P/P@-8 BBO-H 9. 9 P/P@-8 75 BBO-H 9. 9 P/P@-8 55 SHG BBO crystal, Thickness =.5 Code Aperture, θ, φ, BBO-6H P/P@-8 BBO-8H P/P@ BBO-H 9. 9 P/P@-8 76 BBO-H 9. 9 P/P@-8 65 BBO-5H P/P@-8 98 BBO-H 9. 9 P/P@-8 7 BBO-H 9. 9 P/P@-8 55 SHG BBO crystal, Thickness = Code Aperture, θ, φ, BBO-6H P/P@-8 9 BBO-8H P/P@-8 65 BBO-H 9. 9 P/P@ BBO-H 9. 9 P/P@-8 5 BBO-5H P/P@-8 86 BBO-H 9. 9 P/P@ BBO-H 9. 9 P/P@ SHG BBO crystal, Thickness = Reflection, % W avelength λ, P-protective coating curve of Type (θ=9., φ=9 ) BBO crystal used for SHG@8 Housing Accessories Ring Holders for Nonlinear Crystals See page. Code Aperture, θ, φ, BBO-65H P/P@-8 6 BBO-85H P/P@-8 6 BBO-5H 9. 9 P/P@-8 8 BBO-5H 9. 9 P/P@-8 BBO-55H P/P@-8 9 BBO-5H 9. 9 P/P@-8 65 BBO-5H 9. 9 P/P@-8 6 Positioning Mount 8-99 for Nonlinear Crystal Housing See page.6 Visit for new products and prices 5.

31 BBO for 8 BBO crystal, Thickness =. Code Aperture, UV FS support size, θ, φ, BBO-66H P/P@-8/66 BBO-86H P/P@-8/66 6 BBO-6H. 9 P/P@-8/66 75 BBO crystal, Thickness =. THG BBO crystal, Thickness =. Code Aperture, θ, Code Aperture, UV FS support size, θ, φ, BBO-67H P/P@-8/66 BBO-87H P/P@-8/66 6 BBO-7H. 9 P/P@-8/66 75 BBO crystal, Thickness =.5 φ, Code Aperture, UV FS support size, θ, φ, BBO-68H P/P@-8/66 98 BBO-88H P/P@-8/66 99 BBO-8H. 9 P/P@-8/66 BBO-69H P/P@-8/66 55 BBO-89H P/P@-8/66 7 BBO-9H. 9 P/P@-8/66 8 BBO-9H. 9 P/P@-8/66 BBO-59H P/P@-8/66 BBO-9H. 9 P/P@-8/66 95 BBO-9H. 9 P/P@-8/ THG BBO crystal, Thickness =.5 Code Aperture, θ, φ, BBO-6H P/P@-8/66 BBO-8H P/P@-8/ BBO-H. 9 P/P@-8/66 76 BBO-H. 9 P/P@-8/66 65 BBO-5H P/P@-8/66 98 BBO-H. 9 P/P@-8/66 9 BBO-H. 9 P/P@-8/66 5 Related Products Zero Order Dual Wavelength Plates See page 5. Ring Holders for Nonlinear Crystals See page. Positioning Mount 8-99 for Nonlinear Crystal Housing See page.6 THG BBO crystal, Thickness =. Code Reflection, % Aperture, θ, φ, P-protective coating curve of Type (θ=., φ=9 ) BBO crystal's exit face used for THG@8 BBO-6H P/P@-8/66 55 BBO-8H P/P@-8/66 7 BBO-H. 9 P/P@-8/66 79 BBO-H. 9 P/P@-8/66 85 BBO-5H P/P@-8/66 BBO-H. 9 P/P@-8/66 95 BBO-H. 9 P/P@-8/66 5 THG BBO crystal, Thickness = Code Aperture, θ, φ, BBO-6H P/P@-8/66 9 BBO-8H P/P@-8/66 65 BBO-H. 9 P/P@-8/ BBO-H. 9 P/P@-8/66 BBO-5H P/P@-8/66 9 BBO-H. 9 P/P@-8/66 86 BBO-H. 9 P/P@-8/ EKSMA OPTICS Tel.: Fax: info@eksmaoptics.com

32 FemtoLine Laser & Nonlinear Crystals Femtokits for third harmonic generation of femtosecond Ti:Sapphire laser Kits consist of set of components required for efficient third harmonic generation of femtosecond Ti:Sapphire laser. The schemes of the third harmonic generation in basic and extended Femtokits are presented below. Basic Femtokit FK Series Basic Femtokit FK series includes: Type SHG BBO crystal with 6 6 aperture, -8, Type THG BBO crystal with 6 6 aperture, -8/66, Calcite plate for group velocity delay compensation CP, AR 8+, Zero order dual waveplate W, optically contacted, AR 8+, All above four components are mounted in to inch ring holders for convenient handling. Mounted Femtokit FK Series The thickness of SHG BBO crystal, THG BBO crystal and group delay compensation plate is different in each kit and is optimal for certain pulse duration of fundamental harmonic to avoid harmonic pulses broadening. Angular adjustment axis W Zero order 8 and dual waveplate Angular adjustment axis vertical 66 Type SHG BBO CP Group Delay compensation plate Type THG BBO Fundamental Basic FemtoKit FK Series Basic Mounted FemtoKit FK Series pulse duration Code Code 5 5 fsec FK-8-7 FK-8--M fsec FK-8-76 FK-8--M 78 7 fsec FK-8-76 FK-8--M 78 7 fsec FK FK-8-5-M 6 5 fsec FK-8- FK-8--M 88 Non-standard kits with larger apertures of BBO crystals and thicknesses optimal for other pulse durations are available on request. Visit for new products and prices 5.

33 Extended FemtoKit FKE Series W Zero order 8 waveplate Angular adjustment axis W Zero order 8 and dual waveplate Angular adjustment axis HS HS M vertical 66 Type SHG BBO CP Group Delay compensation plate Fundamental pulse duration Type THG BBO 66 Extended FemtoKit FKE Series Extended Mounted FemtoKit FKE Series Code Code 5 5 fsec FKE-8- FKE-8--M 5 fsec FKE-8-5 FKE-8--M 7 7 fsec FKE-8-5 FKE-8--M 7 7 fsec FKE FKE-8-5-M 68 5 fsec FKE-8- FKE-8--M 75 Non-standard kits with larger apertures of BBO crystals and thicknesses optimal for other pulse durations are available on request. 8 Extended Femtokit FKE series includes: All components from basic kit, Additional zero order waveplate W, optically contacted, AR 8, Harmonic Separator HS 66 and 8+ at AOI=5, Harmonic Separator HS and 8 at AOI=5, Laser mirror M, HR at 8 at AOI=5. Up to 5% SHG conversion efficiency which was achieved in.5 SHG BBO crystal with Ti:Sapphire Super Spitfire laser operating at khz, fs, - 8 and effective beam diameter.9. THG efficiency was reached up to 8% from fundamental using FKE-8- Femtokit. Extended Mounted Femtokit FKE Series 5. EKSMA OPTICS Tel.: Fax: info@eksmaoptics.com

34 FemtoLine Laser & Nonlinear Crystals Thin AgGaS Crystals for DFG.5-. µm Standard specifications Flatness Parallelism Perpendicularity Angle tolerance Aperture tolerance Surface quality Clear aperture 6 < arcsec < arcmin < arcmin ±. -5 scratch & dig (MIL-PRF-8B) >9% of full aperture BBAR s for AgGaS crystals BBAR coating is multilayer dialectric antireflection coating made at specified wavelength range. Standard coating is designed to reduce reflection losses at input side at.-.6 micron range and output side at.6- micron range Typical reflection values are R<.5% in the mid range, and up to reflection values of uncoated crystal at the edges of given ranges. BBAR coating is designed to minimise dispersion of ultrashort pulses and also features high damage threshold. Size, Orientation AgGaS W H L θ φ AGS-H AGS-H AGS-H AGS-H AGS-8H AGS-8H Crystals are mounted into open ring holders (see page.). /.6- μm /.6- μm -6 /.5- μm /.6- μm /.6- μm /.6- μm Application μm ->.- μm 695 μm ->.- μm 5 -6 μm, Type 995 μm ->.- μm 995 μm ->.- μm μm ->.- μm Generated wavelength, microns Phase matching angle, Type DFG (e-o=o) in AGS. DFG of signal and idler generated in BBO pumped at 8 Housing Accessories Ring Holders for Nonlinear Crystals See page. Generated wavelength, microns Phase matching angle, Type DFG (e-o=e) in AGS. DFG of signal and idler generated in BBO pumped at 8 Positioning Mount 8-99 for Nonlinear Crystal Housing See page.6 Visit for new products and prices 5.

35 Yb:KGW and Yb:KYW Crystals laser lines and harmonics High absorption coefficient at 98 High stimulated emission cross section Low laser threshold Extremely low quantum defect λ pump / λ se Broad polarized output at 6 High slope efficiency with diode pumping (~ 6%) High Yb doping concentration -9 σ, * cm E Nm Yb:KGW and Yb:KYW crystals have broad emission bandwidths and are used as lasing materials to generate ultrashort (~ - fs) high power pulses. Direct pump of Yb:KGW/KYW crystals with laser diodes operating at 98 supports compact laser systems. Yb:KGW/KYW laser generates pulses at -6 wavelength range. Also Yb:KGW and Yb:KYW can be used as ultrashort pulse amplifiers. We believe that Yb:KGW and Yb:KYW are some of the best materials for high power thin disk lasers generating femtosecond pulses. Properties of Yb:KGW and Yb:KYW Custom manufacturing capabilities Various shapes (slabs, rods, cubes, disks) Different dopant levels Diversified coatings Attractive prices for introductory quantities to OEMs Name Yb:KGW Yb:KYW Yb + concentration.5 5%.5 % Crystal structure monoclinic monoclinic Point group C/c C/c Lattice parameters Thermal expansion Thermal conductivity a=8.95 Å, b=. Å, c=7.588 Å, β=9. α a = -6 / C, α b =.6-6 / C, α c =8.5 K a =.6 W/mK, K b =.8 W/mK, K c =. W/mK a=8.5 Å, b=.5 Å, c=7.5 Å, β=9 Density 7.7 g/cm 6.6 g/cm Mohs hardness 5 5 Melting temperature 75 C Transmission range µm µm Refractive indices (λ=.6 µm) n g =.7, n p =.986, n m =. Thermo-optic 6 n p / T= K - n m / T= K - n g / T= K - For % Yb:KYW n p / T= K - n m / T= K - n g / T= K - Laser wavelength Fluorescence lifetime. ms. ms Stimulated emission cross section (E a).6 - cm - cm Absorption peak and bandwidth α a =6 cm -, λ=98, λ=.7 α a = cm -, λ=98, λ=.5 Absorption cross section. -9 cm. -9 cm Lasing threshold 5 mw 7 mw Stark levels energy (in cm - ) of the F 5/ manifolds of Yb 77K 68, 7, , 76, 87 Stark levels energy (in cm - ) of the F 7/ manifolds of Yb 77K 55, 85, 6, 568, 7, 69, Emission Absorption. E Np..... E Ng Absorption and stimulated emission cross sections of Yb:KYW - Cross section, cm absorbtion E a E b 6 E c emission E a E b E c Absorption and emission spectrae of Yb(5%):KGW 5.5 EKSMA OPTICS Tel.: Fax: info@eksmaoptics.com