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Proceedings Paper

New advanced two-color (MW/LW) infrared detector and focal plane array design using InGaAs/InAlAs quantum well infrared photodetectors on InP substrates
Author(s): Stephen W. Kennerly; John W. Little; Arnold C. Goldberg; Richard P. Leavitt
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Paper Abstract

This paper provides the design details for a new two-color quantum-well infrared photodetector for use in advanced thermal imaging. The single pixel experimental data used in the evolution of this design is discussed in significant detail. Using the knowledge gained from extensive measurements comparing miniband transport with bound-to-quasi-bound QWIPs and also double and triple coupled-well QWIPs with the more conventional single-well QWIPs, a two-color design is presented. The detector design provides for a lattice-matched growth and superior response in the MWIR spectral region, while keeping the dark currents from the LWIR portion of the detector to a minimum. The architecture will allow for the MWIR and LWIR stacks to be biased separately and also for the signals to be read independently.

Paper Details

Date Published: 12 November 2001
PDF: 11 pages
Proc. SPIE 4454, Materials for Infrared Detectors, (12 November 2001); doi: 10.1117/12.448186
Show Author Affiliations
Stephen W. Kennerly, Army Research Lab. (United States)
John W. Little, Army Research Lab. (United States)
Arnold C. Goldberg, Army Research Lab. (United States)
Richard P. Leavitt, Army Research Lab. (United States)

Published in SPIE Proceedings Vol. 4454:
Materials for Infrared Detectors
Randolph E. Longshore, Editor(s)

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