Stabilized cw CO2(CO) laser with automatic tuning over oscillation lines for monitoring of air pollutants

Vadim A. Gorobets; Vladimir O. Petukhov; Sergei Y. Tochitsky; V. V. Churakov

doi:10.1117/12.197403

2 January 1995 Stabilized cw CO₂(CO) laser with automatic tuning over oscillation lines for monitoring of air pollutants

Vadim A. Gorobets, Vladimir O. Petukhov, Sergei Y. Tochitsky, V. V. Churakov

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Proceedings Volume 2370, 5th International Conference on Laser Applications in Life Sciences; (1995) https://doi.org/10.1117/12.197403
Event: Laser Applications in Life Sciences: 5th International Conference, 1994, Minsk, Belarus

Abstract

In the paper, a cw CO₂ (CO) laser with automatic tuning over oscillation lines and stabilized output parameters is described. The transfer of oscillation from carbon dioxide to carbon monoxide only takes place when the series-produced sealed-off active element GL-501 is replaced by the constructively identical element GL-509. The laser oscillates in the 9.1 - 11.3 micrometers range (100 vibrational-rotational lines of the 00⁰1-10⁰0(02⁰0) band and more than 20 lines of the 01¹1-11¹0 band's P-branch of the CO₂ molecule when GL-501 is used) and in the 5.2 - 6.4 micrometers range (more than 100 vibrational-rotational lines of the CO molecule when GL-509 is used). The output power in the single-mode regime is more than 10 W at oscillation on CO₂ (on weak lines -- 1 W at least) and more than 1 W at oscillation on CO (on weak lines -- 0.05 W at least). The CO₂ (CO) laser with the above parameters operated satisfactorily for a long time as a component of a trace gas analyzer and it was used also for local control of gaseous atmospheric pollutants by the method of PA-detection. For the purpose of widening spectral possibilities of the CO₂ (CO) laser for working gas analyzer problems the oscillation of the CO₂ laser radiation second harmonic in the AgGaSe₂ crystal of a high optical quality has been obtained. The convertor efficiency factor about 0.15% with the laser output power approximately 5 W directed onto crystal has been realized.

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Vadim A. Gorobets, Vladimir O. Petukhov, Sergei Y. Tochitsky, and V. V. Churakov "Stabilized cw CO₂(CO) laser with automatic tuning over oscillation lines for monitoring of air pollutants", Proc. SPIE 2370, 5th International Conference on Laser Applications in Life Sciences, (2 January 1995); https://doi.org/10.1117/12.197403

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KEYWORDS

Carbon dioxide lasers

Gas lasers

Carbon monoxide

Crystals

Carbon dioxide

Laser crystals

Molecules

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