Quantum well photodetector with pseudo-random reflection

Barry F Levine (Inventor), Gabby Sarusi (Inventor)

Research output: Patent


Quantum well infrared photodetectors (QWIPs) according to the invention have a surface that provides pseudo-random reflection of the radiation that is incident thereon, resulting in an increase in the effective number of passes of the radiation through the quantum well region, and hence in increased responsivity of the QWIPs, as compared to corresponding prior art grating QWIPs. A convenient approach to forming the pseudo-random reflecting surface is disclosed.

Original languageEnglish
Patent numberUS5506419
IPCH01L 31/ 0352 A I
Priority date10/11/94
StatePublished - 9 Apr 1996


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