Vibrational kinetics of the active media of CW CO2 lasers

Authors: Nevdakh, V.1; Ganjali, Monireh2

Source: Journal of Applied Spectroscopy, Volume 72, Number 1, January 2005 , pp. 75-83(9)

Publisher: Springer

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Abstract:

The vibrational kinetics of CW CO2 lasers has been analyzed within the framework of a temperature model. The necessity of taking into account the coupling of the vibrational modes of the CO2 molecule in determining the occupation numbers and the store of vibrational energy in individual modes is shown. Expressions that connect vibrational temperatures with the rates of excitation and relaxation of the lower vibrational levels of modes have been obtained. The ratios between the vibrational temperatures on selective excitation of the 00° 1 level and on excitation of CO2 molecules in an electric discharge as well as the character of the dependences of vibrational temperatures on the pumping-energy value are discussed.

Keywords: CW CO2 laser; active medium; electric discharge; relaxation; temperature model; vibrational temperature

Document Type: Research Article

DOI: http://dx.doi.org/10.1007/s10812-005-0034-4

Affiliations: 1: B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 F. Skorina Ave., Minsk, 220072, Belarus, Email: nevdakh@dragon.bas-net.by 2: B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, 68 F. Skorina Ave., Minsk, 220072, Belarus,

Publication date: January 1, 2005

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