Computer Science – Performance
Scientific paper
Apr 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997spie.2999...94c&link_type=abstract
Proc. SPIE Vol. 2999, p. 94-102, Photodetectors: Materials and Devices II, Gail J. Brown; Manijeh Razeghi; Eds.
Computer Science
Performance
2
Scientific paper
The maturation of the III-V materials technology has provided an opportunity for the development of a producible and affordable class of IR detector arrays. Designs based on the GaAs compounds permit the realization of multiple quantum well IR photodetectors (QWIPs) which are useful for long wavelength focal plane arrays with sizes demonstrated up to 640 X 480. Similar designs using InP based materials can cover an even broader IR spectral region with lattice matched structures. QWIP demonstrations have been made for midwave detectors and very long wave detectors as well. New detector structures that improve optical performance and reduce bias current can lead to higher performance QWIPs which approach the performance of mercury cadmium telluride at moderate operating temperatures. These developments offer the possibility of practical, large, affordable IR focal plane arrays in the near future.
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