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Photoexcited escape probability, optical gain, and noise in quantum well infrared photodetectorsWe present a detailed and thorough study of a wide variety of quantum well infrared photodetectors (QWIPs), which were chosen to have large differences in their optical and transport properties. Both n- and p-doped QWIPs, as well as intersubband transitions based on photoexcitation from bound-to-bound, bound-to-quasi-continuum, and bound-to-continuum quantum well states were investigated. The measurements and theoretical analysis included optical absorption, responsivity, dark current, current noise, optical gain, hot carrier mean free path; net quantum efficiency, quantum well escape probability, quantum well escape time, as well as detectivity. These results allow a better understanding of the optical and transport physics and thus a better optimization of the QWIP performance.
Document ID
19930032395
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Levine, B. F.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Zussman, A.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Gunapala, S. D.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Asom, M. T.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Kuo, J. M.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Hobson, W. S.
(AT&T Bell Labs. Murray Hill, NJ, United States)
Date Acquired
August 15, 2013
Publication Date
November 1, 1992
Publication Information
Publication: Journal of Applied Physics
Volume: 72
Issue: 9
ISSN: 0021-8979
Subject Category
Solid-State Physics
Accession Number
93A16392
Distribution Limits
Public
Copyright
Other

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