Princeton Optronics (Mercerville, NJ) has introduced high-power (8W) 940nm VCSEL arrays for illumination applications. These arrays have an efficiency of >45%, a spectral width of approximately 1nm and a circular beam with divergence of 18 degrees (full angle). The array’s dimensions are 2x2mm and it is normally mounted on submounts.
The array’s solar background rejection capability stems from the sharply lower level of solar background and use of narrow band filters for the detector arrays at 940nm compared to wavelengths such as 800 or 850nm. A very high power array of >100W at 940nm is under construction for pumping applications.
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