Interband cascade lasers for sensing operating in continuous wave mode at room temperature

S. Höfling; R. Weih; A. Bauer; M. Kamp; A. Forchel

doi:10.1117/12.931119

24 October 2012 Interband cascade lasers for sensing operating in continuous wave mode at room temperature

S. Höfling, R. Weih, A. Bauer, M. Kamp, A. Forchel

Proceedings Volume 8511, Infrared Remote Sensing and Instrumentation XX; 85110F (2012) https://doi.org/10.1117/12.931119
Event: SPIE Optical Engineering + Applications, 2012, San Diego, California, United States

Abstract

The 3 to 4 µm wavelength range is of special interest for sensing applications. Interband cascade lasers (ICLs) have proven to be very attractive lasers for this range. We report on design optimizations of ICLs to reduce the dissipated threshold power with the aim to improve the high temperature performance. Distributed feedback ICLs with vertical sidewall gratings show single mode emission and they operate in continuous wave mode at room temperature. The devices exhibit side-mode suppression ratios of ~25 dB and typical fine tuning rates of 0.09 nm/mA and 0.3 nm/K. Therewith, the presented devices are very suitable for hydrocarbon sensing applications.

Citation Download Citation

S. Höfling, R. Weih, A. Bauer, M. Kamp, and A. Forchel "Interband cascade lasers for sensing operating in continuous wave mode at room temperature", Proc. SPIE 8511, Infrared Remote Sensing and Instrumentation XX, 85110F (24 October 2012); https://doi.org/10.1117/12.931119

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