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Proceedings Paper

InP-based quantum-well infrared photodetectors
Author(s): Sarath D. Gunapala; Barry F. Levine; D. Ritter; Robert A. Hamm; Morton B. Panish
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Paper Abstract

We demonstrate the first long wavelength quantum well infrared photodetectors (QWIPs) using lattice matched n-doped In0.47As/InP and n-doped 1.3 micrometers InGaAsP/InP materials systems. The responsivity of In0.52Ga0.47As/InP detectors has been found to be larger than that for similar GaAs/AlxGa1 - xAs detectors. In addition we demonstrate the first p-doped In0.53Ga0.47As/InP QWIPs. This detector has the shortest wavelength response, (lambda) p equals 2.7 micrometers , ever achieved in a QWIP and operates at normal incidence.

Paper Details

Date Published: 1 November 1991
PDF: 13 pages
Proc. SPIE 1541, Infrared Sensors: Detectors, Electronics, and Signal Processing, (1 November 1991); doi: 10.1117/12.49315
Show Author Affiliations
Sarath D. Gunapala, AT&T Bell Labs. (United States)
Barry F. Levine, AT&T Bell Labs. (United States)
D. Ritter, AT&T Bell Labs. (United States)
Robert A. Hamm, AT&T Bell Labs. (United States)
Morton B. Panish, AT&T Bell Labs. (United States)

Published in SPIE Proceedings Vol. 1541:
Infrared Sensors: Detectors, Electronics, and Signal Processing
T. S. Jay Jayadev, Editor(s)

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