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Proceedings Paper

Design of broadband QWIPs
Author(s): V. Guériaux; V. Trinité; A. Coulibaly; L. Dua; N. Brière de l'Isle; X. Marcadet; E. Costard; P. Bois; A. Nedelcu
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Paper Abstract

One of the key features of quantum well infrared photodetectors is the narrow absorption band. However, some applications, as the infrared spectroscopy, require broadband detection. Several approaches have been used to get a broadband response with QWIPs (superlattices, digital graded barriers, stacks, etc.). In this paper, we focus on the interlaced configuration and on the coupled wells structure. Both designs exhibit broadband response covering the [11-15 μm] spectral range. The experimental dependencies of the spectral shape versus the temperature and bias voltage are discussed. Based on numerical model, we propose a specific design strategy which leads to a spectral shape quasiindependent on the operating conditions.

Paper Details

Date Published: 20 May 2011
PDF: 9 pages
Proc. SPIE 8012, Infrared Technology and Applications XXXVII, 80120P (20 May 2011); doi: 10.1117/12.886889
Show Author Affiliations
V. Guériaux, Alcatel-Thales III-V Lab. (France)
V. Trinité, Alcatel-Thales III-V Lab. (France)
A. Coulibaly, Alcatel-Thales III-V Lab. (France)
L. Dua, Alcatel-Thales III-V Lab. (France)
N. Brière de l'Isle, Alcatel-Thales III-V Lab. (France)
X. Marcadet, Alcatel-Thales III-V Lab. (France)
E. Costard, Alcatel-Thales III-V Lab. (France)
P. Bois, Alcatel-Thales III-V Lab. (France)
A. Nedelcu, Alcatel-Thales III-V Lab. (France)

Published in SPIE Proceedings Vol. 8012:
Infrared Technology and Applications XXXVII
Bjørn F. Andresen; Gabor F. Fulop; Paul R. Norton, Editor(s)

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