Broadly Tunable and Multi-Spectral Mid-IR Semiconductor Lasers and Applications

Chuan Peng; Yi Wang; Yang Wang; Huanlin Zhang; Guipeng Luo; Bujin Guo; Han Q. Le

doi:10.1117/12.641480

22 February 2006 Broadly tunable and multi-spectral mid-IR semiconductor lasers and applications

Chuan Peng, Yi Wang, Yang Wang, Huanlin Zhang, Guipeng Luo, Bujin Guo, Han Q. Le

Proceedings Volume 6133, Novel In-Plane Semiconductor Lasers V; 61330A (2006) https://doi.org/10.1117/12.641480
Event: Integrated Optoelectronic Devices 2006, 2006, San Jose, California, United States

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.

Citation Download Citation

Chuan Peng, Yi Wang, Yang Wang, Huanlin Zhang, Guipeng Luo, Bujin Guo, and Han Q. Le "Broadly tunable and multi-spectral mid-IR semiconductor lasers and applications", Proc. SPIE 6133, Novel In-Plane Semiconductor Lasers V, 61330A (22 February 2006); https://doi.org/10.1117/12.641480

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KEYWORDS

Tunable lasers

Absorption

Imaging spectroscopy

Visible radiation

Spectroscopy

Mid-IR

Infrared imaging

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