Phase insensitive frequency modulation LIDAR for long distance CO<sub>2</sub> monitoring

Andrei Deev; Sheng Wu

doi:10.1117/12.665374

19 May 2006 Phase insensitive frequency modulation LIDAR for long distance CO₂ monitoring

Andrei Deev, Sheng Wu

Proceedings Volume 6214, Laser Radar Technology and Applications XI; 62140A (2006) https://doi.org/10.1117/12.665374
Event: Defense and Security Symposium, 2006, Orlando (Kissimmee), Florida, United States

Abstract

Gas monitoring over long distances using Frequency Modulation (FM) spectroscopy require phase insensitive detection scheme because of the severe scintillation problem. We report our effort to develop a long working distance CO2 monitoring LIDAR that uses phase insensitive Two-Tone Frequency Modulation (TTFM) spectroscopy technique. We could detect 10^-4 single pass absorption, and could detect 1ppm CO2 level change in normal air.

Citation Download Citation

Andrei Deev and Sheng Wu "Phase insensitive frequency modulation LIDAR for long distance CO₂ monitoring", Proc. SPIE 6214, Laser Radar Technology and Applications XI, 62140A (19 May 2006); https://doi.org/10.1117/12.665374

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