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Proceedings Paper

Broadly Tunable and Multi-Spectral Mid-IR Semiconductor Lasers and Applications
Author(s): Chuan Peng; Yi Wang; Yang Wang; Huanlin Zhang; Guipeng Luo; Bujin Guo; Han Q. Le
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Paper Abstract

This paper describes an application-centric development of broadly tunable and multi-spectral mid/long-wave IR semi-conductor lasers. Examples of various external-cavity lasers capable of broad, continuous wavelength tuning with type-I and type-II quantum cascade lasers are discussed. Laser configurations studied include conventional Littman-Metcalf, Littrow, multi-segment and Bragg-grating-coupled surface-emitting. All were capable of single-mode continuous tuning with high side-mode-suppression ratio. The lasers were evaluated with spectroscopic applications, which include wave-length-modulation spectroscopic imaging and multi-wavelength decomposition of a gas mixture. The results showed that these lasers were capable of maintaining wavelength accuracy and stability over the entire tuning range. Multi-spectral imaging with discrete wavelengths over a wide spectral range was also studied. The results with a modest 4-wavelength system demonstrated the potential application for target discrimination, detection, and identification. These results suggest potential value for broadly tunable, wide-band M/LWIR laser technology.

Paper Details

Date Published: 22 February 2006
PDF: 12 pages
Proc. SPIE 6133, Novel In-Plane Semiconductor Lasers V, 61330A (22 February 2006); doi: 10.1117/12.641480
Show Author Affiliations
Chuan Peng, Univ. of Houston (United States)
Yi Wang, Univ. of Houston (United States)
Yang Wang, Univ. of Houston (United States)
Huanlin Zhang, Univ. of Houston (United States)
Guipeng Luo, Univ. of Houston (United States)
Bujin Guo, Univ. of Houston (United States)
Han Q. Le, Univ. of Houston (United States)
Protea Corp. (United States)

Published in SPIE Proceedings Vol. 6133:
Novel In-Plane Semiconductor Lasers V
Carmen Mermelstein; David P. Bour, Editor(s)

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