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25 September 2009 Infrared semiconductor laser modules for DIRCM applications
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We report on the concept, realization and performance data of infrared semiconductor laser modules serving as compact and robust laser sources for a Directed Infrared Countermeasures (DIRCM) system. While the 2-2.5 μm atmospheric transmission window is covered by a GaSb-based optically pumped semiconductor disk laser (OPSDL), delivering a continuous-wave (cw) or temporally modulated output of ≥ 1 W with a high beam quality (M2 < 3), an external cavity (EC) quantum cascade (QC) laser module is used to cover the 4.5-5 μm spectral range. The EC-QC laser concept allows efficient spectral beam combining of the output of several QC laser located side-by-side on the same semiconductor chip, while preserving the high-quality output beam of a single emitter. Both the OPSDL and the EC-QC laser have been integrated into rugged laser modules, comprising also all necessary power supply and control electronics, ready for use in field trials.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. Wagner, S. Hugger, B. Rösener, F. Fuchs, M. Rattunde, Q. Yang, W. Bronner, R. Aidam, K. Köhler, M. Raab, E. Romasew, and H. D. Tholl "Infrared semiconductor laser modules for DIRCM applications", Proc. SPIE 7483, Technologies for Optical Countermeasures VI, 74830F (25 September 2009);

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