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Proceedings Paper

Universal presentation of laser gain saturation laws
Author(s): Mordechai Lando; Shlomo Eisenbach; Shimon Gabay
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Paper Abstract

Three gain saturation laws are frequently used to describe the light energy propagation in laser amplifiers: two assigned to Rigrod, referring to homogeneous and inhomogeneous laser line. The third assigned to Frantz-Nodvick law. We show that under lossless medium conditions, and for both small signal and saturation regimes the laws can be presented uniformly as: Yout equals Yin(DOT)exp(go(DOT)L) where Y is a function of the normalized intensity I, which is the ratio of light intensity to saturation light intensity. The saturation intensity and the dependence of Y on I are different for each of the laws, but for all cases Y approaches I in the small-signal regime. We provide approximate analytical expressions, for the inverse function I(Y) for the two Rigrod laws, facilitating a one-step integration of the gain saturation laws.

Paper Details

Date Published: 13 August 1993
PDF: 6 pages
Proc. SPIE 1868, Laser Resonators and Coherent Optics: Modeling, Technology, and Applications, (13 August 1993); doi: 10.1117/12.150606
Show Author Affiliations
Mordechai Lando, Nuclear Research Ctr.-Negev (Israel)
Shlomo Eisenbach, Nuclear Research Ctr.-Negev (Israel)
Shimon Gabay, Nuclear Research Ctr.-Negev (Israel)

Published in SPIE Proceedings Vol. 1868:
Laser Resonators and Coherent Optics: Modeling, Technology, and Applications
Anup Bhowmik, Editor(s)

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