A Tunable Coherent CO[sub]2[/sub] Lidar For Measurements Of Atmospheric Aerosol Backscatter And Attenuation

Robert T. Menzies

doi:10.1117/12.935897

13 December 1983 A Tunable Coherent CO₂ Lidar For Measurements Of Atmospheric Aerosol Backscatter And Attenuation

Robert T. Menzies

Proceedings Volume 0415, Coherent Infrared Radar Systems and Applications II; (1983) https://doi.org/10.1117/12.935897
Event: 1983 Technical Symposium East, 1983, Arlington, United States

Abstract

A coherent laser radar system using a grating tunable injection-locked TEA-CO2 transmitter is being used to measure the altitude dependence of atmospheric aerosol backscatter and attenuation at a variety of CO2 laser wavelengths in the 9-11 μm region. Injection control of the TEA-CO2 laser allows one to obtain single-longitudinal-mode (SLM) pulses which will follow the frequency of the injected radiation if the TEA laser cavity length is adjusted so that a cavity resonance is in proximity with the injected signal frequency, and if various additional conditions are satisfied. Requirements for generation of SLM pulses in this manner from a TEA CO2 laser with an unstable resonator cavity will be discussed. Procedures used for quantitative range-gated measurments of aerosol backscatter and attenuation will also be discussed.

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Robert T. Menzies "A Tunable Coherent CO₂ Lidar For Measurements Of Atmospheric Aerosol Backscatter And Attenuation", Proc. SPIE 0415, Coherent Infrared Radar Systems and Applications II, (13 December 1983); https://doi.org/10.1117/12.935897

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