TECHNICAL QUICK REFERENCE GUIDE MANUFACTURING CAPABILITIES GLASS PROPERTIES COATING CURVES REFERENCE MATERIALS

Transcription

1 TECHNICAL QUICK REFERENCE GUIDE COATING CURVES GLASS PROPERTIES MANUFACTURING CAPABILITIES REFERENCE MATERIALS

2 TABLE OF CONTENTS Why Edmund Optics?... 3 Anti-Reflective (AR) Coatings Metallic Mirror Coatings Typical Relative Coating Cost Dielectric Mirror Coatings Other Coating Capabilities Common Equations Brewster s and Critical Angle MgF 2 Performance on Different Materials EO Glass Shop Material Properties λ and ν Conversion Chart Manufacturing Capabilities

3 WHY EDMUND OPTICS? RELIABILITY We process and ship 95% of orders the same day With over 75 years in business, EO s promise to customers is MORE OPTICS, MORE TECHNOLOGY, AND MORE SERVICE #1 Preferred Supplier of Optical Components - Readex Research Survey QUALITY ISO 91 Certified and MIL-SPEC quality systems Complete testing and metrology services CAPABILITIES AND SERVICE Global optics manufacturing Staff of optical and mechanical designers worldwide Build-to-print manufacturing Custom design services emphasize designing for manufacturability from prototype to volume production Fast turnaround of modification services To contact us visit 3

4 ANTI-REFLECTIVE (AR) COATINGS Standard Visible Anti-Reflection Coatings λ/4 MgF 55nm VIS ( nm) UV-VIS (25-7nm) VIS-NIR (4-1nm) VIS-EXT (35-7nm)

5 ANTI-REFLECTIVE (AR) COATINGS 4. Standard NIR Anti-Reflection Coatings VIS-NIR (4-1nm) NIR I (6-15nm) NIR II (75-155nm) Telcom-NIR (12-16nm) SWIR (9-17nm)

6 ANTI-REFLECTIVE (AR) COATINGS MgF R avg 1.75% 4-7nm (N-BK7) The most commonly used anti-reflection coating for visible wavelengths Highly durable and economical Optimized for 55nm for normal incidence Easily customized for other wavelength bands Typical energy density limit: 1 J/cm 1ns 6

7 ANTI-REFLECTIVE (AR) COATINGS UV-AR R abs 1.% nm, R avg.75% nm, R avg.5% 37-42nm Frequently applied to UV fused silica lenses and windows Excellent broadband coverage from nm Optimized for 3nm for normal incidence Typical energy density limit: 3 J/cm 1ns 7

8 ANTI-REFLECTIVE (AR) COATINGS UV-VIS (%) R abs 1.% 35-45nm, R avg 1.5% 25-7nm Like the UV-AR coating, it is commonly applied to UV fused silica lenses and windows to increase transmission in the UV Designed for extended performance into the visible spectrum Typical energy density limit: 3 J/cm 1ns 8

9 ANTI-REFLECTIVE (AR) COATINGS VIS-EXT (%) R avg <.5% 35-7nm Broadband AR coating with low reflectance from 35-7nm Designed to cover more fluorescent wavelengths below 4nm Ideal for multi-spectral and hyper-spectral applications Typical energy density limit: 5 J/cm 1ns 9

10 ANTI-REFLECTIVE (AR) COATINGS VIS-NIR R abs.25% 88nm, R avg 1.25% 4-87nm, R avg 1.25% 89-1nm Broadband AR coating designed to yield maximum transmission (>99%) in both the visible and NIR Optimized for 89nm for normal incidence Typical energy density limit: 5 J/cm 1ns 1

11 ANTI-REFLECTIVE (AR) COATINGS VIS R avg.4% nm Optimized transmission for angle of incidence Preferred over MgF 2 for visible applications requiring high transmission Typical energy density limit: 5 J/cm 1ns 11

12 ANTI-REFLECTIVE (AR) COATINGS YAG-BBAR R abs <.25% 532nm, R abs <.25% 164nm, R avg <1.% 5-11nm Optimized to minimize reflection at 164nm and 532nm Typical energy density limit: 5 J/cm 1ns 12

13 ANTI-REFLECTIVE (AR) COATINGS NIR I R avg.5% 6-15nm Commonly used with fiber optics, laser diode modules, and NIR LED lights Typical energy density limit: 7 J/cm 1ns 13

14 ANTI-REFLECTIVE (AR) COATINGS NIR II R abs 1.5% 75-8nm, R abs 1.% 8-155nm, R avg.7% nm Works at slightly longer wavelengths than the NIR I coating Commonly used with fiber optics, laser diode modules, and NIR LED lights Typical energy density limit: 8 J/cm 1ns 14

15 ANTI-REFLECTIVE (AR) COATINGS TELECOM-NIR R abs.25% nm, R abs.25% nm, R avg.25% 12-16nm Popular in telecommunications applications 15

16 ANTI-REFLECTIVE (AR) COATINGS SWIR R abs 1.5% 9-17nm, R avg 1.% 9-17nm Commonly used in SWIR applications including inspection of electronics or solar cells, surveillance, and anti-counterfeiting 16

17 METALLIC MIRROR COATINGS for Metallic Mirror Coatings NIR - IR Range (nm) Protected Aluminum Range (μm) % Reflection Enhanced Aluminum UV Ehanced Aluminum Protected Gold Protected Silver Range (μm) % Reflection Range (μm) % Reflection Range (μm) % Reflection Range (μm) % Reflection

18 METALLIC MIRROR COATINGS 1. for Metallic Mirror Coatings UV - NIR Range Protected Aluminum Range (μm) % Reflection Enhanced Aluminum UV Ehanced Aluminum Protected Gold Protected Silver Range (μm) % Reflection Range (μm) % Reflection Range (μm) % Reflection Range (μm) % Reflection

19 METALLIC MIRROR COATINGS PROTECTED GOLD pp 45 s 45 s R avg >96% 7-1nm High reflectance in the NIR and IR regions Durable coating with protective overcoat Performance of gold is maintained along with a more durable finish Typical energy density limit:.8 J/cm 1ns 19

20 METALLIC MIRROR COATINGS PROTECTED SILVER p p 45 s 45 s R avg >98% 45-1nm Excellent choice for broadband applications that span multiple spectral regions The protective coating reduces tendency to tarnish Best performance in low humidity environments Typical energy density limit:.5 J/cm & 164nm, 1ns 2

21 METALLIC MIRROR COATINGS PROTECTED ALUMINUM p p 45 s 45 s R avg >85% 4-7nm, R avg >9% 4-2nm Our most popular coating for applications in the visible and NIR spectra λ/2 SiO overcoat protects the delicate aluminum and provides an abrasion-resistant surface Typical energy density limit:.3 J/cm & 164nm, 1ns 21

22 METALLIC MIRROR COATINGS ENHANCED ALUMINUM p p 45 s 45 s R avg >95% 45-65nm Enhanced reflectance in visual spectrum Same Improved handling characteristics of the protected aluminum coating Typical energy density limit:.2 J/cm 1ns 22

23 METALLIC MIRROR COATINGS UV ENHANCED ALUMINUM p p 45 s 45 s R avg >89% 25-45nm, R avg >85% 45-7nm Optimized reflectance in the UV spectrum Matches the handling characteristics of the protected aluminum coating Typical energy density limit:.5 J/cm 1ns 23

24 RELATIVE COATING COST AR Coating Relative Cost Metallic Mirror Coating Relative Cost MgF 2 1 UV-AR 1.44 UV-VIS 1.67 VIS-EXT 1.33 VIS-NIR 1.78 VIS 1.22 YAG-BBAR 1.78 NIR I 1.67 NIR II 1.89 Telecom-NIR 1.78 SWIR 1.89 Protected Aluminum 1 Enhanced Aluminum 1.22 UV Enhanced Aluminum 1.22 Protected Gold 2.4 Protected Silver 2. BARRINGTON, NJ COATING CELL In addition to our global coating facilities for volume production, we have a coating cell in Barrington, NJ for quick coating runs of small quantities, prototyping, and research and development. 24

25 DIELECTRIC MIRROR COATINGS 4-75nm Reflectance Reflection (%) (%) AOI 45 AOI R avg - 45 all polarizations, R avg all polarizations Ideal for beam steering or applications utilizing multiple laser sources Superior reflectance from to 45 AOI 25

26 DIELECTRIC MIRROR COATINGS 75-11nm Reflectance Reflection (%) (%) AOI 45 AOI R avg - 45 all polarizations, R avg all polarizations Ideal for beam steering or applications utilizing multiple laser sources Exceptional reflectance for s- and p-polarization 26

27 DIELECTRIC MIRROR COATINGS VUV AND DUV VUV Coated DUV Coated VUV Coating: R avg nm, R avg 12-6nm DUV Coating: R avg nm, R avg 2-6nm Designed for AOI Maintains a broadband reflectance throughout the UV and visible spectrum 27

28 Filters Fluorescence, Dichroic, Narrow Bandpass, Multi-Bandpass, Notch, Edge (SWP and LWP) Laser V-Coatings and Double V-Coatings Beamsplitters Polarizing, Non-Polarizing ITO Conductive Hot and Cold Dielectric Mirrors Specialized Designs Build-to-Print, Custom Design and Development for UV, Visible, Infrared (NIR, MWIR, SWIR, LWIR) OTHER COATING CAPABILITIES 28

29 COMMON EQUATIONS Fresnel Equations Abbe Number R s = n cosθ n cosθ 2 1 i 2 t V n 1 cosθ i + n 2 cosθ D = n 1 D t n F n C R p = n cosθ n cosθ 1 t 2 i n 1 cosθ t + n 2 cosθ i At normal incidence: R = n 1 n 2 2 Critical Angle for TIR θ C = sin -1 n 2 n 1 where n 1 >n 2 Brewster s Angle θ B = tan -1 n 2 n 1 2 n 1 + n 2 Thin-Film AR Coating Index for % Reflectance n f = (n n S ) 1/2 where n f is the index of the film, n is the index of the incident material (1 for air), and n s is the substrate index Snell s Law n 1 sinθ = n 2 sinθ Malus Law For Polarizers I = I cos2 θ where θ is the angle between the analyzer and polarizer 29

30 REFLECTANCE FROM AIR TO N-BK7 1 Reflectance from Air to N-BK7 Reflectance from Air to N-BK Rs Rp Brewester s angle Angle of Incidence ( ) 3

31 REFLECTANCE FROM N-BK7 TO AIR 1 Reflectance from N-BK7 to Air Reflectance from N-BK7 to Air Critical angle Rs Rp Range of total internal reflection Angle of Incidence ( ) 31

32 MgF 2 PERFORMANCE ON DIFFERENT MATERIALS Single Layer MgF 2 AR BK7 SF57 Fused Silica LAK22 Sapphire

33 EO GLASS SHOP MATERIAL PROPERTIES Material Refractive Index (n d ) Abbe Number (v d ) Density (g/cm 3 ) Coefficient of Thermal Expansion Max Operating Temp ( C) N-BK FUSED SILICA N-SF N-SF N-LAK N-F N-SF BOROFLOAT N-LASF N-BAK N-LAK S-FSL B N-SF N-SF N-LASF

34 WAVELENGTH AND FREQUENCY CONVERSION CHART Visible Color Wavelength Frequency (THz) Wave Number (cm -1 ) Common Source Å nm µm ArF Excimer KrF Excimer Nd:YAG XeCl Excimer N Ar-Ion or XeF Excimer Nd:YAG or Nd:YVO InGaN Diode Ar-Ion Fraunhofer F Line (H) Ar-Ion or Xe or InGaAs Diode Ar-Ion Nd:Yag or Nd:YVO Fraunhofer d Line (He) He:Ne AlGaInP Diode Fraunhofer C Line (H) AlGaInP Diode AlGaAs Diode InGaAsP Diode AlGaAs Diode InGaAs or InGaAsP Diode Nd:Yag or Nd:YVO InGaAsP Diode InGaAsP Diode CO

35 SPHERICAL LENS MANUFACTURING CAPABILITIES Commercial Precision High Precision Diameter 4-2mm 4-2mm 4-2mm Diameter Tolerance +/-.1mm +/-.25mm +/-.1mm Thickness ±.1mm ±.5mm ±.1mm Surface Sag ±.5mm ±.25mm ±.1mm Clear Aperture 8% 9% 9% Radius ±.3% ±.1% Fix to Test Plate Power (P - V) 3.λ 1.5λ λ/2 Irregularity (P - V) 1.λ λ/4 λ/2 Centering (Beam Deviation) 3 arcmin 1 arcmin.5 arcmin Bevel (Face degrees) <1.mm <.5mm <.25mm Surface Quality

36 ASPHERIC LENS MANUFACTURING CAPABILITIES Commercial Precision High Precision Diameter 1-15mm 1-15mm 1-15mm Diameter Tolerance +/-.1mm +/-.25 +/-.1 Asphere Figure Error (P - V) 5μm μm <.312μm Vertex Radius (Asphere) ±1% ±.1% ±.5% Radius (Spherical) ±.3% ±.1% ±.25% Power (Spherical) 2λ λ/2 λ/1 Irregularity (Spherical) λ/2 λ/4 λ/2 Sag 25mm max 25mm max 25mm max Typical Slope Tolerance 1μm/mm.35μm/mm.15μm/mm Centering (Beam Deviation) 3 arcmin 1 arcmin.5 arcmin Center Thickness Tolerance ±.1mm ±.5mm ±.1mm Surface Quality (Scratch Dig) Aspheric Surface Metrology Profilometry Profilometry Profilometry 36

37 OPTICAL PRISM MANUFACTURING CAPABILITIES Commercial Precision High Precision Dimensions 2-2mm 2-15mm 2-75mm Dimensional Tolerance +/-.1mm +/-.25mm +/-.1mm V-Height ±.25mm ±.1mm ±.3mm Irregularity 1.λ λ/4 λ/2 Prism Physical Angle Tolerance ±3 arcmin ±3 arcsec 45º & 9º ±.5 arcsec Penta Prism Deviation 5 arcmin 3 arcmin.5 arcsec Bevel Tolerance (Face 45 ) ±.2mm ±.1mm ±.5mm Surface Quality (Scratch Dig) Bonded Prism Assembly Beam Deviation 5 arcmin 3 arcmin.5 arcmin Surface Quality

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