895nm Single-Mode VCSEL Part number code: 895S--X2 PRODUCT DESCRIPTION A true (both spectrally single mode and Gaussian beam shape) single transverse mode 895nm Infrared VCSEL, with single linear polarized emission designed for pulsed & modulated applications. Qualities such as low power dissipation, polarization & spectral stability make this product ideal for OEM applications. Major Applications: Spectroscopic sensors Atomic clock Magnetometer Interferometry Features: Low divergence angle Circular beam profile Single Spectral & Spatial mode Narrow spectral width Stable SM beam divergence emission over both temperature and current Linear stable polarization orientated along chip edge Package options include: TO-46 hermetic can (Minimum quantity order of 5 pcs) TO-46 non-hermetic can TO can with TEC and Thermistor for Temperature Control Applications Other packages upon request. Package Details: See separate packages datasheet at http://www.vixarinc.com/pdf/packagesds.pdf.
Page 2 of 5 Absolute Maximum Ratings Parameter Rating Notes Storage temperature -4 to 25 C Operating temperature (VCSEL) -2 to C Lead solder temperature 26 C, seconds CW current (VCSEL) 3 ma (Note ) Laser reverse voltage 5 V (Note 2) Note : The maximum CW laser current in the Absolute Maximum Ratings is valid for the operating temperature noted at the top of this table; however, the maximum CW laser current decreases with increasing temperature. Contact Vixar for maximum CW laser current values at other temperatures. Note 2: For details refer to the Vixar Application Note "VCSEL EOS/ESD Considerations and Lifetime Optimization". Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only. Functional operation of the device at these or any other conditions beyond those indicated for extended periods of time may affect device reliability. Electro-Optical Characteristics VCSEL Operating Temp (Tv) =8 C & Operating Current=.mA unless otherwise stated) Parameter Symbol Units Minimum Typical Maximum Notes To remain single Maximum DC current (CW) ma -- --. mode & polarization stable Threshold current Ith ma.2.35.5 Operating voltage Vf Volts --.9 2.3 Series resistance (VCSEL) Rs Ohms -- 35 -- Slope efficiency SE mw/ma --.25 -- Optical output power Lop mw..4.6 T=5 C Optical output power Lop mw.5..4 T=8 C Reverse breakdown voltage V -- -- Ir na Operating wavelength λop nm 893.5 894 894.5 Single mode Suppression Ratio SMSR db 2 -- -- Unmodulated Spectral width (RMS) Δλ MHz -- -- Unmodulated Polarization Extinction ratio PER db 6 -- -- Beam divergence /e2 deg 6 2 26 Beam divergence FWHM FWHM deg 9 2 6 Wavelength current coefficient nm/ma.35.55.65 Wavelength temp coefficient nm/ C --.6 -- Modulation Bandwidth BW Gbps 4. -- -- Rise time ps -- -- 2%-8% Fall time Ps -- -- 2%-8%
Normalized Intensity Normalized Intensity L[mW] Relative Instensity (db) Page 3 of 5 TYPICAL PERFORMANCE CURVES: LIV over temperature Typical Spectrum vs. Current.7 3-55.6.5.4.3.2. 2.5 2.5.5 V 4 C -6-65 -7-75.5 ma ma.5 ma 2 ma 2 3 4 I[mA] 5 C 6 C 8 C -8 892 892.5 893 893.5 894 894.5 895 895.5 896 Wavelength (nm) Far Field Beam Divergence (Independent of Temperature & Current).4.2.8.6 895nm h5.57 x MK33 BH6.58mA (2.5 ) x MK48 BH5.58mA (25.33 ) x OS7 BH4.57mA (26.7 ) x2 LQ236 BH7.63mA (2.87 ) x2 NE237 BH6.6mA (22.95 ) x2 OS38 BH5.65mA (24.72 ) x3 DY23 BH4.6mA (8.49 ) x3 KC BH5.67mA (2.5 ) x3 KC93 BH6.65mA (9.74 ).4.2-5 -2-9 -6-3 3 6 9 2 5 beam angle X (deg).4.2.8.6 x MK33 BH6.58mA (8.7 ) x MK48 BH5.58mA (22.65 ) x OS7 BH4.57mA (22.33 ) x2 LQ236 BH7.63mA (7.66 ) x2 NE237 BH6.6mA (9.56 ) x2 OS38 BH5.65mA (2.7 ) x3 DY23 BH4.6mA (23.29 ) x3 KC BH5.67mA (9.5 ) x3 KC93 BH6.65mA (8. ).4.2-5 -2-9 -6-3 3 6 9 2 5 beam angle Y (deg) Sample Line-width data on a single mode VCSEL
Page 4 of 5 ORDERING INFORMATION Description ESD Diode () Package Hermetically Sealed (2) Part Number 895±.5nm single-mode VCSEL bare die Die only (3) 895S--A2 TO can package TO-46 895S--B2 TO can package with ESD diode () TO-46 895S--B92 hermetic sealed TO can package TO-46 (2) 895S--G2 hermetic sealed TO can package with ESD diode () TO-46 (2) 895S--G92 TO can six leaded can with TEC & Thermistor TO-46 6 Leaded 895S--BC2 TO can six leaded can with TEC, Thermistor & ESD diode () TO-46 6 Leaded 895S--BC92 hermetic sealed TO can six leaded can with TEC & Thermistor TO-46 6 Leaded (2) 895S--GC2 hermetic sealed TO can six leaded can with TEC, Thermistor & ESD diode () TO-46 6 Leaded (2) 895S--GC92 TO can 8 leaded can with TEC & Thermistor TO-5 895S--EC2 TO can 8 leaded can with TEC, Thermistor & ESD diode () TO-5 895S--EC92 hermetic sealed TO can 8 leaded can with TEC & Thermistor TO-5 (2) 895S--IC2 hermetic sealed TO can 8 leaded can with TEC, Thermistor & ESD diode () TO-5 895S--IC92 () Do not include an ESD diode if the part will be modulation frequency 35 MHz. (2) Hermetically sealed. Minimum quantity order is 5 pieces (3) To burn in VCSEL die, operate them at 3mA for 48 hours at 85 C. Die attach procedures can negatively impact polarization. Contact Vixar for recommendations regarding die attach materials and process temperatures and time. (2)
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