23 January 2010 Interband cascade infrared photodetectors
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Abstract
Interband cascade (IC) infrared (IR) photodetectors (ICIPs) are a new type of detector that combines features of conventional interband photodiodes with the discrete nature of quantum-well IR photodetectors (QWIPs) and IC lasers. The operation of ICIPs takes advantage of fast intersubband relaxation and interband tunneling for carrier transport, and relatively slow interband transitions (long lifetime) for photon generation. As such, ICIPs can be tailored to optimize device performance for specific application requirements. We report our initial efforts in the development of ICIPs. We have observed the photocurrent from an InAs-based IC laser with a cutoff wavelength near 8 μm at 80 K, and significant photocurrent from GaSb-based ICIPs with cutoff wavelengths near 5 μm at 80 K and 7 μm at above room temperature.
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Zhaobing Tian, Zhaobing Tian, Zhihua Cai, Zhihua Cai, Rui Q. Yang, Rui Q. Yang, Tetsuya D. Mishima, Tetsuya D. Mishima, Michael B. Santos, Michael B. Santos, Matthew B. Johnson, Matthew B. Johnson, J. F. Klem, J. F. Klem, } "Interband cascade infrared photodetectors", Proc. SPIE 7608, Quantum Sensing and Nanophotonic Devices VII, 76081X (23 January 2010); doi: 10.1117/12.842052; https://doi.org/10.1117/12.842052
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