A resonant infrared photoconductor with unit quantum efficiency

Jam Farhoomand

doi:10.1117/12.2297915

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1 October 1991 A resonant infrared photoconductor with unit quantum efficiency

Jam Farhoomand

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Proceedings Volume 1576, 16th International Conference on Infrared and Millimeter Waves; 15765M (1991) https://doi.org/10.1117/12.2297915
Event: 16th International Conference on Infrared and Millimeter Waves, 1991, Lausanne, Switzerland

Abstract

In this presentation we introduce a new concept for an infrared photoconductor and demonstrate that such a detector can, theoretically, exhibit unit quantum efficiency at selected frequencies. The idea is based on establishing a relatively high finesse absorption-cavity internal to the detector element and tuning the front surface reflectivity and the dopant concentration of the detector to achieve improved performance. A theoretical analysis demonstrates this concept and provides the relevant design parameters. This approach offers many other advantages over conventional photoconductors as well as impurity-band-conduction approach. Among those are enhanced photoconductive gain, improved noise performance, and better immunity against ionizing radiation.

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Jam Farhoomand "A resonant infrared photoconductor with unit quantum efficiency", Proc. SPIE 1576, 16th International Conference on Infrared and Millimeter Waves, 15765M (1 October 1991); https://doi.org/10.1117/12.2297915

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