1. Resonant cavity enhanced photodetectors for the mid-wave infrared
- Author
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Gary W. Wicks, Terry Golding, Adam P. Craig, Greg R. Savich, and Andrew R. J. Marshall
- Subjects
Laser linewidth ,Materials science ,Infrared ,business.industry ,Detector ,Broadband ,Optoelectronics ,Photodetector ,Specific detectivity ,Resonant cavity ,business ,Noise (electronics) - Abstract
We present III-Sb resonant cavity-enhanced (RCE) photodetectors suitable for gas detection in the mid-wave infrared. AlAsSb/GaSb DBRs and absorbers of bulk InAsSb or a type-II InAsSb-InAs SLS were grown on GaSb, allowing for operation at 3.72 μm or 4.52 μm, with linewidth Δλ 20x reduction in noise compared with a conventional nBn detector with full thickness absorber. At 3.72 μm, performance above the BLIP limit imposed on broadband photodetectors was found by calculating for the specific detectivity.
- Published
- 2019
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