Title :
A model of the excitation discharge of fast transversal flow lasers
Author :
Sorichetti, Patricio A.
Author_Institution :
Dept. of Phys., Buenos Aires Univ., Argentina
fDate :
10/1/1991 12:00:00 AM
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;
Journal_Title :
Quantum Electronics, IEEE Journal of
