This work was supported in part by the National Science Foundation and by Tektronix, Inc. The author also expresses his appreciation to members of the Department of Physics at the University of Otago for valuable discussions and hospitality during his sabbatical visit.
Physical Review A
Wave guides -- Research, Lasers -- Power supply -- Characteristics, Laser beams -- Measurement
Semiclassical models for lasers typically incorporate a fundamental simplification called the rotating-wave approximation. In this study the rotating-wave approximation is reexamined, and its implications for the simplest problem of a steady-state laser oscillator are considered in detail. It is found that for practical laser operating conditions the errors resulting from this approximation may not always be negligible.
Casperson, L. W. (1992). Rotating-wave approximation in high-gain lasers. 436 (1), 401-409.