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Proceedings Paper

Laser beam propagation in gain media
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Paper Abstract

Two models of gain and thermal guiding effects were derived. In the first one the complex ABCD matrix for a crystal under gain and thermal guiding was applied to describe the operation of microchip near threshold. In the second one, the simple iterative procedure was proposed to calculate effective fundamental mode parameters of a cavity under thermal and gain guiding for given bare cavity ABCD matrix and pumping parameters, including gain saturation, passive cavity losses and reabsorption ones. The influence of gain guiding effects causes changes of waist width in the range up to 50% comparing to expectations derived from thermal guiding theory. Application of such method for resonators of passively Q switched lasers was proposed. Results of calculations for microchips were verified with experiment.

Paper Details

Date Published: 21 November 2003
PDF: 7 pages
Proc. SPIE 5259, 13th Polish-Czech-Slovak Conference on Wave and Quantum Aspects of Contemporary Optics, (21 November 2003); doi: 10.1117/12.545151
Show Author Affiliations
Jan Karol Jabczynski, Military Univ. of Technology (Poland)
Jacek Kwiatkowski, Military Univ. of Technology (Poland)
Waldemar Zendzian, Military Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 5259:
13th Polish-Czech-Slovak Conference on Wave and Quantum Aspects of Contemporary Optics
Jerzy Nowak; Marek Zajac; Jan Masajada, Editor(s)

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