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27 April 2020 Interband cascade laser frequency combs for spectroscopic sensing (Conference Presentation)
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Abstract
By exploiting the bi-functional operation capability of interband cascade laser (ICL) frequency combs, we have utilized the laser medium not only for comb generation, but also as a room-temperature photodetector with near-GHz bandwidth for multi-heterodyne beating of the comb lines. Our self-contained platform consuming less than 2 W of electrical power enables free-running room-temperature broadband dual-comb spectroscopy of 1,1 difluoroethane with ~3% standard deviation in 2 ms over 600 GHz of optical bandwidth around 3.6 µm. We will discuss progress toward the optimization of ICL combs for realizing compact, low-power chemical sensors operating in the MWIR.
Conference Presentation
© (2020) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Lukasz A. Sterczewski, Mahmood Bagheri, Clifford F. Frez, Chadwick L. Canedy, Igor Vurgaftman, Mijin Kim, Chul Soo Kim, Charles D. Merritt, William W. Bewley, Jerry R. Meyer, Chu C. Teng, and Gerard Wysocki "Interband cascade laser frequency combs for spectroscopic sensing (Conference Presentation)", Proc. SPIE 11390, Next-Generation Spectroscopic Technologies XIII, 1139012 (27 April 2020); https://doi.org/10.1117/12.2559308
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