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- Title
QWIPs DESIGNED FOR HIGH ABSORPTION AND HIGH OPERATING TEMPERATURE.
- Authors
Liu, H.C.; Dudek, R.; Shen, A.; Dupont, E.; Song, C.-Y.; Wasilewski, Z.R.; Buchanan, M.
- Abstract
For the majority of applications involving detection of weak signals or thermal imaging, the quantum well infraredlly used, a high dark current can be tolerated. The most important parameter is then the absorption efficiency. For system simplicity and potential wide use, room temperature or near room temperature (reachable by thermo-electric cooling) operations are desirable. This paper discusses the QWIP design for high absorption and elevated temperature operation, and present a systematic experimental study on a set of GaAs/AlGaAs QWIPs with different doping densities. High absorption (∼ 100%) and up to room temperature operation are achieved in devices having high doping densities and 100 quantum wells.
- Subjects
INFRARED detectors; QUANTUM wells; LIGHT absorption
- Publication
International Journal of High Speed Electronics & Systems, 2002, Vol 12, Issue 3, p803
- ISSN
0129-1564
- Publication type
Article
- DOI
10.1142/S0129156402001708