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Proceedings Paper

QWIP structural optimization
Author(s): Kwong-Kit Choi; Chung-Hsiang Lin; Kok-Ming Leung; Theodor Tamir
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Paper Abstract

Quantum well infrared photodetectors (QWIP) are flexible in tailoring their characteristics to suit an application. In this article, we present a design and optimization concept to construct an infrared spectrometer. It utilizes the broadband absorption of a QWIP and the narrow band light coupling of a grid structure. The QWIP material defines the range of detection wavelengths of the spectrometer while the grid geometry selects out different wavelengths to detect in different detector elements. We will present specific design examples in two wavelength ranges, one from 7.5 to 12 μm and another from 6 to 15 μm. We will also present some experimental results to support the design feasibility.

Paper Details

Date Published: 5 December 2002
PDF: 12 pages
Proc. SPIE 4795, Materials for Infrared Detectors II, (5 December 2002); doi: 10.1117/12.453827
Show Author Affiliations
Kwong-Kit Choi, Army Research Lab. (United States)
Chung-Hsiang Lin, Polytechnic Univ./Brooklyn (United States)
Kok-Ming Leung, Polytechnic Univ./Brooklyn (United States)
Theodor Tamir, Polytechnic Univ./Brooklyn (United States)


Published in SPIE Proceedings Vol. 4795:
Materials for Infrared Detectors II
Randolph E. Longshore; Sivalingam Sivananthan, Editor(s)

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