Mid-IR sensing using external cavity quantum cascade lasers

Timothy Day; Miles J. Weida; David Arnone; Michael Pushkarsky; Peter Buerki; Dave Caffey; Vince Cook; Eric B. Takeuchi

doi:10.1117/12.850614

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27 April 2010 Mid-IR sensing using external cavity quantum cascade lasers

Timothy Day, Miles J. Weida, David Arnone, Michael Pushkarsky, Peter Buerki, Dave Caffey, Vince Cook, Eric B. Takeuchi

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Proceedings Volume 7680, Next-Generation Spectroscopic Technologies III; 76800M (2010) https://doi.org/10.1117/12.850614
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

Abstract

Commercially available quantum cascade semiconductor materials continue to mature. When integrated into external cavity quantum cascade laser (ECqcL™) geometries, these laser systems are now providing near-continuous coverage throughout the entire 3 - 13 μm regime. Such coverage enables molecular detection systems to enjoy high sensitivity and selectivity. Individual lasers have been demonstrated to provide > 320 wavenumbers of tuning. Wide tuning ranges have also been demonstrated at wavelengths in the 3 - 4 μm regime. In addition, phase continuous (mode-hop-free) tuning allows for extremely high resolution spectroscopy to be performed throughout the mid-IR. Daylight Solutions will review the most up-to-date results regarding wavelength coverage, tuning range and power levels achieved from ECqcL™ systems. Daylight will also provide recent results in sensitivity and coverage from their multi-species Swept Sensor™ and photoacoustic detection platforms.

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Timothy Day, Miles J. Weida, David Arnone, Michael Pushkarsky, Peter Buerki, Dave Caffey, Vince Cook, and Eric B. Takeuchi "Mid-IR sensing using external cavity quantum cascade lasers", Proc. SPIE 7680, Next-Generation Spectroscopic Technologies III, 76800M (27 April 2010); https://doi.org/10.1117/12.850614

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