Semiclassical theory of rectangular waveguide gas lasers

Author

Zang, Er Jun ; Cao, Hongjun ; Zhong, Mingchen ; Shen, Naicheng

Author_Institution

Laser Frequency Lab., Nat. Inst. of Metrol., Beijing, China

Volume

35

Issue

4

fYear

1999

fDate

4/1/1999 12:00:00 AM

Firstpage

682

Lastpage

689

Abstract

The semiclassical theory for gas lasers is extended from one dimension into three. Self-consistency equations of a rectangular waveguide resonator and the component equations of motion for the population matrix are derived. Laser parameters related to the waveguide structure and active medium are analyzed by solving the equations. For homogeneously broadened lasers, theoretical investigation shows that single-mode operation depends on the waveguide dimensions, the most probable speed of the active medium, and the decay constants or the saturation parameter. Under some conditions, the oscillating modes can be determined by the frequency interval and the relative excitation

Keywords

carbon compounds; gas lasers; laser cavity resonators; laser modes; laser theory; optical saturation; rectangular waveguides; spectral line broadening; waveguide lasers; CO₂; CO₂ lasers; active medium; component equations of motion; decay constants; frequency interval; homogeneously broadened lasers; laser parameters; population matrix; rectangular waveguide gas lasers; rectangular waveguide resonator; relative excitation; saturation parameter; self-consistency equations; semiclassical theory; single-mode operation; waveguide dimensions; Equations; Frequency; Gas lasers; Laser modes; Laser theory; Rectangular waveguides; Transmission line matrix methods; Waveguide components; Waveguide lasers; Waveguide theory;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.753674

Filename

753674