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Proceedings Paper

Quantum well intrasubband photodetector (QWISP): Prospects for large-format far-infrared focal plane arrays
Author(s): David Z.-Y. Ting; Yia-Chung Chang; Sumith V. Bandara; Sarath D. Gunapala
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Paper Abstract

We describe a recently proposed device concept of using of the dopant-assisted intra-subband absorption mechanism in quantum wells for normal-incidence far infrared / terahertz radiation detection. The Quantum Well Intra-Subband Photodetector (QWISP) is closely related to the quantum-well infrared photodetector (QWIP), which is now been utilized routinely to fabricate large-format (mega-pixel), multi-spectral (3 to 15 μm) focal plane arrays. The QWISP is a compact device that is compatible with existing GaAs QWIP focal-plane array technology. We describe the basic physics and device concept of the QWISP, present a theoretical analysis on its far-IR detection properties, and discuss prospects toward its experimental realization.

Paper Details

Date Published: 2 May 2008
PDF: 10 pages
Proc. SPIE 6940, Infrared Technology and Applications XXXIV, 694006 (2 May 2008); doi: 10.1117/12.783869
Show Author Affiliations
David Z.-Y. Ting, Jet Propulsion Lab. (United States)
Yia-Chung Chang, Univ. of Illinois at Urbana-Champaign (United States)
Sumith V. Bandara, Jet Propulsion Lab. (United States)
Sarath D. Gunapala, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 6940:
Infrared Technology and Applications XXXIV
Bjørn F. Andresen; Gabor F. Fulop; Paul R. Norton, Editor(s)

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