Optical heterodyning in differential tunable CO<sub>2</sub> laser systems

Anatoly S. Boreysho; Sergei Ya. Chakchir; Maxim A. Konyaev; Konstantin A. Konovalov; Andrei V. Savin

doi:10.1117/12.675903

21 April 2006 Optical heterodyning in differential tunable CO₂ laser systems

Anatoly S. Boreysho, Sergei Ya. Chakchir, Maxim A. Konyaev, Konstantin A. Konovalov, Andrei V. Savin

Proceedings Volume 6160, Twelfth Joint International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics; 61602R (2006) https://doi.org/10.1117/12.675903
Event: Twelfth Joint International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics, 2005, Tomsk, Russian Federation

Abstract

Long-wave infrared (LWIR) differential laser systems based on single-frequency pulsed CO₂ lasers are used in heterodyne lidars for detection of atmospheric pollutions at extremely far distances. Issues related to control of the two-channel tunable single-frequency CO₂ laser system, which includes two pulsed TEA laser and four CW wave-guide CO₂ lasers (two injectors and two local oscillators) are discussed. The special hardware and software -Automatic Frequency Control system (AFC) - have been developed for the effective operation in wide spectral range (>60 lines of CO₂ laser). The main task of this system is to keep optimal ratio between a frequency of the injection laser generation and modes of the TEA laser's resonator. The optimal ratio provides maximal probability of the single-frequency pulse generation taking the TEA chirp into account. Experimental data presented on the temporal and spectral structure of the TEA laser pulse generated with injection of the single-frequency CW radiation.

Citation Download Citation

Anatoly S. Boreysho, Sergei Ya. Chakchir, Maxim A. Konyaev, Konstantin A. Konovalov, and Andrei V. Savin "Optical heterodyning in differential tunable CO₂ laser systems", Proc. SPIE 6160, Twelfth Joint International Symposium on Atmospheric and Ocean Optics/Atmospheric Physics, 61602R (21 April 2006); https://doi.org/10.1117/12.675903

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