VCSEL Measurement

Characteristics of VCSELs

Wavelength range: 650 to 1080 nm and 1550 nm
Power range: mW to Watts
High modulation bandwidth

VCSELs were first used in the telecom industry, and today are widely used as light sources in sensing applications. Low power (mW) applications include face and gesture recognition, proximity sensors, augmented reality displays. High power (Watts) applications include LIDARs for robotics, UAVs and autonomous vehicles. These new applications run on batteries and will need to minimize power consumption. Therefore characterization of VCSEL power, beam profile, noise, etc. is critical. Often VCSELs are coupled with passive optics or scanning optics which generate very wide beams. Additionally, VCSELs are often used in pulsed mode. These factors make VCSEL test and measurement a challenging task. Ophir offers the right tools for this task.

Power, Energy and Irradiance Measurement

Description	Features
L40(250)A-LP2-50 Long Pulse 40/250W Air-Cooled Ø50mm Thermal Sensor	LP2 type 250 to 2200 nm absorber for long pulse lasers 300 mW to 40 W average power measurement 100 mJ to 10,000 J pulse energy measurement 250 W power measurement intermittently	L40(250)A-LP2-50 Long Pulse 40/250W Air-Cooled Ø50mm Thermal Sensor
3A-IS Silicon 3W Divergent Beam 1.6 in. Integrating Sphere	1.6 inch ID integrating sphere for divergent beam Silicon photodiode for 350 to 1100 nm spectral range 1 µW to 3 W power measurement range 12 mm diameter aperture	3A-IS Silicon 3W Divergent Beam 1.6 in. Integrating Sphere
3A-IS-IRG InGaAs 3W Divergent Beam 1.6 in. Integrating Sphere	1.6 inch ID integrating sphere for divergent beam InGaAs photodiode for 800 to 1700 nm spectral range 1 µW to 3 W power measurement range 12 mm diameter aperture	3A-IS-IRG InGaAs 3W Divergent Beam 1.6 in. Integrating Sphere
PE50-C 46 mm Aperture 10 μJ-10 J Pyroelectric Sensor	High rep rate metallic absorber with a 150-3000 nm spectral range 10 μJ to 10 J pulse energy measurement range 5 ms maximum pulse width Repetition rates up to 10,000 Hz	PE50-C 46 mm Aperture 10 μJ-10 J Pyroelectric Sensor
PD300R-UV Ø10 mm Aperture 300 mW UV-Silicon Photodiode Sensor	200-1100 nm uv-silicon photodiode sensor with Ø10 mm aperture 20 pW to 300 mW power measurement range Includes removable filter Fiber optic adapters available	PD300R-UV Ø10 mm Aperture 300 mW UV-Silicon Photodiode Sensor
IS-1-2W UV-Silicon 2W Divergent Beam 1.0 in. Integrating Sphere	1.0 inch ID integrating sphere for divergent beam UV-Silicon photodiode for 220 to 1100 nm spectral range 500 nW to 2 W power measurement range 5 mm diameter aperture	IS-1-2W UV-Silicon 2W Divergent Beam 1.0 in. Integrating Sphere
IS6-D-VIS Silicon 30W Divergent 5.3 in. ID Ø26mm Aperture Integrating Sphere	5.3 in. inner diameter 4-port integrating sphere for divergent beams Silicon photodetector with filter for 400-1100 nm spectral range 20 µW to 30 W power measurement range Port plugs, covers, adapters and reducers available	IS6-D-VIS Silicon 30W Divergent 5.3 in. ID Ø26mm Aperture Integrating Sphere
IS6-D-IR Germanium 30W Divergent 5.3 in. ID Ø26mm Aperture Integrating Sphere	5.3 in. inner diameter 4-port Integrating sphere for divergent beams Germanium photodetector with filter for 700-1800 nm spectral range 100 µW to 30 W power measurement range Port plugs, covers, adapters and reducers available	IS6-D-IR Germanium 30W Divergent 5.3 in. ID Ø26mm Aperture Integrating Sphere
IS6-D-IR-170 Germanium 30W 170° Divergent 5.3 in. ID Ø8mm Aperture Integrating Sphere	5.3 in. ID 4-port Integrating sphere for up to 170° divergent beams Germanium photodetector with filter for 700-1800 nm spectral range 20 µW to 30 W power measurement range Port plugs, covers, adapters and reducers available	IS6-D-IR-170 Germanium 30W 170° Divergent 5.3 in. ID Ø8mm Aperture Integrating Sphere
IS1.5-VIS-FPD-800 High Speed Silicon 4W Multi-function 1.5 in. Integrating Sphere	Fast photodiode for pulse shape characterization of divergent sources (e.g. VCSEL) Internal diameter of 1.5 in. to minimize the pulse stretching effect Pulse width as low as 3.5ns Built in SMA fiber adapter for connection to a spectrometer	IS1.5-VIS-FPD-800 High Speed Silicon 4W Multi-function 1.5 in. Integrating Sphere
Centauri 7 in. Color Touchscreen High End Power Meters	Compatible with all standard Ophir Thermal, BeamTrack, Pyroelectric and Photodiode sensors Large 7 inch full color touch display with advanced graphing and statistics Single and dual channel versions available, with upgrade path from single to dual Sophisticated power/energy logging including logging every pulse at up to 25kHz with Pyro sensors	Centauri 7 in. Color Touchscreen High End Power Meters
IS1.5-IRG-FPD-800 High Speed InGaAs 3W Multi-function 1.5 in. Integrating Sphere	Fast photodiode for pulse shape characterization of divergent sources (e.g. VCSEL) Internal diameter of 1.5 in. to minimize the pulse stretching effect Pulse width as low as 6ns Built in SMA fiber adapter for connection to a spectrometer	IS1.5-IRG-FPD-800 High Speed InGaAs 3W Multi-function 1.5 in. Integrating Sphere

Beam Profilers

Description	Features
LT665 USB 2752x2192 CCD 190-1100 nm Laser Beam Profiler	2752 x 2192 pixel resolution with a 4.54 µm pitch Adjustable Gain levels and programmable electronic shutter USB 3.0 communication interface BeamGage Standard or Professional software included	LT665 USB 2752x2192 CCD 190-1100 nm Laser Beam Profiler
L11059 USB 4008x2672 CCD 190-1100 nm Laser Beam Profiler	4008 x 2672 pixel resolution with a 9.0 µm pitch Programmable high speed electronic shutter USB 2.0 communication interface 5ֺֺ9 bB true dynamic resolution	L11059 USB 4008x2672 CCD 190-1100 nm Laser Beam Profiler
SP920s USB 1624x1224 CCD 190-1100 nm Laser Beam Profiler	1624 x 1224 pixel resolution with a 4.4 µm pitch 14 fps at full resolution USB 3.0 communication interface BeamGage Standard or Professional software included	SP920s USB 1624x1224 CCD 190-1100 nm Laser Beam Profiler
Near Field Analysis Beam Profiler	Microscope attachment for C-mount camera Image the waist of a focused laser beam 10X, 20X, 40X and 60X microscope objectives	Near Field Analysis Beam Profiler
Wide Laser Beam Imager	10 to 45 mm beam sizes 350-1100 nm and 900-1700 nm wavelength ranges Measure size and power distribution of large diameter beams	Wide Laser Beam Imager

Fast Photodiode Detectors

Description	Features
FPS-1 UV Silicon 1.5 ns High Speed Optical Detector	UV-Silicon photodiode for 193-1100 nm spectral range Fast 1.5 ns response time 1.02 mm diameter active area Optional attenuators and fiber optic adapters	FPS-1 UV Silicon 1.5 ns High Speed Optical Detector
FPD-UV-3000 & FPD-UV-3000-JP UV Silicon 3 ns High Speed Optical Detector	UV-Silicon photodiode for 193-1100 nm spectral range Fast 3.0 ns response time 2.55 mm diameter active area Optional attenuators and fiber optic adapters	FPD-UV-3000 & FPD-UV-3000-JP UV Silicon 3 ns High Speed Optical Detector
FPD-VIS-300 Silicon 300 ps High Speed Optical Detector	Silicon photodiode for 320-1100 nm spectral range Fast 300 ps rise time 0.4 mm diameter active area Optional attenuators and fiber optic adapters	FPD-VIS-300 Silicon 300 ps High Speed Optical Detector
FPD-IG-175 InGaAs 175 ps High Speed Optical Detector	InGaAs photodiode for 900-1700 nm spectral range Fast 175 ps rise time 0.1 mm diameter active area Optional attenuators, fiber optic & sphere adapters	FPD-IG-175 InGaAs 175 ps High Speed Optical Detector
FPD-IG-25 InGaAs 25 ps High Speed Optical Detector	InGaAs photodiode for 900-1700 nm spectral range Fast 25 ps rise time 0.032 mm diameter active area Optional attenuators and fiber optic adapters	FPD-IG-25 InGaAs 25 ps High Speed Optical Detector