Sinusoidal self-modulation in the output of a CO/sub 2/ laser with an intracavity saturable absorber

Journal Article · Fri Jan 01 04:00:00 EST 1988 · J. Opt. Soc. Am. B: Opt. Phys.; (United States)

DOI:https://doi.org/10.1364/JOSAB.5.000024· OSTI ID:5612674

Tanii, K; Tachikawa, M; Kajita, M; Shimizu, T

Conditions under which a sinusoidally modulated laser output occurs in a CO/sub 2/ laser with a saturable absorber were studied experimentally and theoretically for a wide range of laser operating parameters. A novel type of transition between stability and instability appears in the high-pressure range of the saturable absorber. Through the rate-equation analysis based on the three-level (the gain medium): two-level (the loss medium) model, the observed pulse shapes and the features of transitions in the phase diagram are reproducible. The conditions of saturable absorbers to obtain the sinusoidal are clarified from the analysis.

• Research Organization: Department of Physics, Faculty of Science, University of Tokyo, Bunkyo-ku, Tokyo 113, Japan
• OSTI ID: 5612674
• Journal Information: J. Opt. Soc. Am. B: Opt. Phys.; (United States), Journal Name: J. Opt. Soc. Am. B: Opt. Phys.; (United States) Vol. 5:1; ISSN JOBPD
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
CARBON DIOXIDE LASERS
GAS LASERS
INSTABILITY
LASER MATERIALS
LASERS
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MATHEMATICAL MODELS
MODULATION
OPERATION
PULSES
Q-SWITCHING