DocumentCode :
1143121
Title :
Repetitive passive Q switching of single-frequency lasers
Author :
Powell, Howard T. ; Wolga, George J.
Author_Institution :
Cornell Univ., Ithaca, NY, USA
Volume :
7
Issue :
6
fYear :
1971
fDate :
6/1/1971 12:00:00 AM
Firstpage :
213
Lastpage :
219
Abstract :
A simple model describing repetitive passive 
switching of a single-frequency laser with an intracavity saturable absorber is presented. Three coupled nonlinear rate equations are postulated to describe the inversion density of the amplifier, the inversion density of the absorber, and the photon density in the laser cavity. Each of the three variables is assumed to exhibit a simple exponential relaxation. By considering the linear equations describing small deviations about the expected equilibrium point, a condition on the various parameters is found that describes when repetitive pulsing will occur. Digital computer solutions are shown to verify this condition. Experiments with a CO2 laser with an internal CO2 absorber provide qualitative agreement with the model.
switching of a single-frequency laser with an intracavity saturable absorber is presented. Three coupled nonlinear rate equations are postulated to describe the inversion density of the amplifier, the inversion density of the absorber, and the photon density in the laser cavity. Each of the three variables is assumed to exhibit a simple exponential relaxation. By considering the linear equations describing small deviations about the expected equilibrium point, a condition on the various parameters is found that describes when repetitive pulsing will occur. Digital computer solutions are shown to verify this condition. Experiments with a COKeywords :
Absorption; Gas lasers; Laser mode locking; Laser modes; Laser theory; Nonlinear equations; Optical coupling; Optical pulses; Optical pumping; Pulse compression methods;
fLanguage :
English
Journal_Title :
Quantum Electronics, IEEE Journal of
Publisher :
ieee
ISSN :
0018-9197
Type :
jour
DOI :
10.1109/JQE.1971.1076793
Filename :
1076793
Link To Document :
