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27 April 2020 Interband cascade laser frequency combs for spectroscopic sensing (Conference Presentation)
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, Gerard Wysocki
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Proceedings Volume 11390, Next-Generation Spectroscopic Technologies XIII; 1139012 (2020) https://doi.org/10.1117/12.2559308
Event: SPIE Defense + Commercial Sensing, 2020, Online Only
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.
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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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KEYWORDS
Frequency combs
Quantum cascade lasers
Spectroscopy
Mid-IR
Photodetectors
Sensors
Chemical fiber sensors
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