Photonics SuppliersElectronics & Signal AnalysisData Acquisition Software
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MKS Ophir
Unit of MKS Instruments Inc.
Light & Measurement
Map3050 North 300 West
North Logan, UT 84341
United States
Phone: +1 435-753-3729
Fax: +1 435-753-5231
Toll-free: +1 866-755-5499

Wide Beam Imager for SWIR Range

Wide Beam Imager for SWIR RangeCurrent methods of profiling wide and divergent beams provide inaccurate results due to the high angle dependence of the sensor, or require bulky and expensive laboratory equipment unsuitable for field operation or production environments. The Ophir WB-I SWIR imager is a compact, calibrated optical system for measuring the size and power distribution of large and divergent beams of VCSELs and LEDs in the SWIR range (900 - 1700 nm). It is capable of imaging any beam shape (round, line, square, doughnut) that is too large for a camera sensor. It features a 45 mm diameter aperture and angle of incidence of 70 degrees (vs 15 degrees for standard beam profilers). Beams are captured on a translucent diffusive screen and re-imaged to produce a complete and accurate mapping of the light's intensity distribution.

The WB-I SWIR imager is designed for use with camera-based beam profiling systems in such areas as eye-safe applications using IR VCSELs or diodes, automotive LIDAR, facial and gesture recognition, and remote sensing. Large or diverging beams present challenges because the apertures of conventional beam profilers are too small to collect the entire spot. Also, the quantum efficiency of traditional beam detectors is highly affected by the angle of incidence. The quantum efficiency recedes dramatically with angles of incidence as high as 20 degrees, causing significant measurement errors. The WB-I SWIR can handle beam angles up to 70 degrees. It captures the beam and images its power distribution onto the camera with high accuracy.

The WB-I SWIR imager is supported by Ophir BeamGage Professional software, the industry's most advanced beam analysis system. When used together, the WB-I SWIR imager, BeamGage software, and Ophir SP1203 InGaAs camera can provide real-time beam shape analysis and visualization. That means changes of the beam shape due to different applied currents can easily be detected.

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