A model of the excitation discharge of fast transversal flow lasers

Author

Sorichetti, Patricio A.

Author_Institution

Dept. of Phys., Buenos Aires Univ., Argentina

Volume

27

Issue

10

fYear

1991

fDate

10/1/1991 12:00:00 AM

Firstpage

2340

Lastpage

2346

Abstract

A model of fast transversal flow CO₂ laser discharges is presented. Electron density and vibrational kinetics equations are solved simultaneously with one-dimensional inviscid flow equations, in order to study the effects of the evolution of hydrodynamic variables on discharge stability. The current-voltage characteristic is calculated, including the influence of laser radiation (optogalvanic effect). A relationship is given between fluid residence time and maximum input power density in the active medium, taking the maximum allowable electron density as a parameter. The results are in satisfactory agreement with the experiments of W.J. Wiegand et al. (1975). Expressions for the optimum length of the discharge zone and maximum power input to the active medium are derived

Keywords

carbon compounds; gas lasers; laser theory; CO₂ laser discharges; ID inviscid flow equations; current-voltage characteristic; discharge stability; discharge zone; electron density; excitation discharge; fast transversal flow lasers; fluid residence time; hydrodynamic variables; laser radiation; maximum input power density; maximum power input; optogalvanic effect; vibrational kinetics equations; Current-voltage characteristics; Electrons; Equations; Hydrodynamics; Kinetic theory; Laser excitation; Laser modes; Power lasers; Stability; Temperature;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.97279

Filename

97279