Abstract

A theoretical model is considered for an unsteady three-level (single-mode) laser. By use of the rotating wave approximation, the usual semiclassical equations are transformed into a system of first-order space–time (ST) equations. The space oscillations of the population difference (hole-burning effects) and the motion of the atoms are included in the treatment. After the introduction of several assumptions, the ST equations are transformed to a set of time-dependent space-averaged (SA) equations. The numerical calculations were performed for a pulsed two-mirror laser with a finite phase memory decay constant and for resonance and nonresonance frequencies. The calculations show that the SA equations give almost the same results as the much more complicated ST equations.

© 1983 Optical Society of America

Nonequilibrium kinetics of coupled photons and electrons in two-level systems of the laser type

E. Schöll and P. T. Landsberg
J. Opt. Soc. Am. 73(9) 1197-1206 (1983)

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Application of the 2-D discrete-ordinates method to multiple scattering of laser radiation

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