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Proceedings Paper

Terahertz quantum well photodetectors
Author(s): H. Luo; H. C. Liu; C. Y. Song; Z. R. Wasilewski; A. J. SpringThorpe; J. C. Cao
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Paper Abstract

The development of technologies in the terahertz spectrum or the very-far-infrared region has been slow mainly because of lack of convenient detectors and lasers. We report on the design and simulated performance of quantum-well photodetectors for the terahertz (1 - 10 THz). Quantum well, barrier, and doping parameters are optimized in terms of operating temperature, absorption, and detectivity. We also report on our experimental demonstration of GaAs/AlGaAs photodetectors with background limited infrared performance (BLIP). These devices are suited for a variety of applications, especially in conjunction with the newly developed THz quantum cascade lasers. One of such example is THz free space communication.

Paper Details

Date Published: 29 August 2006
PDF: 6 pages
Proc. SPIE 6308, Photonics for Space Environments XI, 63080N (29 August 2006); doi: 10.1117/12.680885
Show Author Affiliations
H. Luo, National Research Council Canada (Canada)
H. C. Liu, National Research Council Canada (Canada)
C. Y. Song, National Research Council Canada (Canada)
Z. R. Wasilewski, National Research Council Canada (Canada)
A. J. SpringThorpe, National Research Council Canada (Canada)
J. C. Cao, Shanghai Institute of Microsystem and Information Technology (China)

Published in SPIE Proceedings Vol. 6308:
Photonics for Space Environments XI
Edward W. Taylor, Editor(s)

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