Program-controlled trace gas analyzer based on TEA CO2 laser tunable in the superwide spectral region

Vladimir O. Petukhov; Vadim A. Gorobets; Konstantin V. Kozlov

doi:10.1117/12.375430

25 January 2000 Program-controlled trace gas analyzer based on TEA CO₂ laser tunable in the superwide spectral region

Vladimir O. Petukhov, Vadim A. Gorobets, Konstantin V. Kozlov

Proceedings Volume 4064, Third International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering; (2000) https://doi.org/10.1117/12.375430
Event: Third International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, 1999, St. Petersburg, Russian Federation

Abstract

The lidar complex of equipment based on TEA CO₂ laser specially designed for atmospheric sensing, with automatic tuning on generation lines in the spectral ranges 9 - 11.3 and 4.5 - 5.6 micrometers has been described. Besides regular transitions 00⁰1 - 10¹0 (02⁰0), the laser is able to generate powerful (megawatt) pulses on hot band (01¹ - 11¹0) lines. Considerable extension of the spectral range to the short-wave region is attained due to effective TEA CO₂ laser second harmonic generation in nonlinear crystals. Taking into the real potentialities of the lidar complex in hand, using a package of spectroscopic data HITRAN, computer simulation of atmospheric transmission has been made. On this bases, by the method of differential absorption a method has been elaborated for measuring small concentrations of a large number of gases, including especially dangerous atmospheric pollutants CO, C₂H₄, etc. This method was tried out on medium paths (approximately 1 km) in the real conditions of Minsk. Small (background) concentrations of a number of atmospheric gases have been measured.

Citation Download Citation

Vladimir O. Petukhov, Vadim A. Gorobets, and Konstantin V. Kozlov "Program-controlled trace gas analyzer based on TEA CO₂ laser tunable in the superwide spectral region", Proc. SPIE 4064, Third International Workshop on Nondestructive Testing and Computer Simulations in Science and Engineering, (25 January 2000); https://doi.org/10.1117/12.375430

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