Thermo-optical model of repetitively pumped solid-state lasers

A thermo-optical model describing the cavity stability and TEM00-mode volume of a repetitively pumped solid-state laser is developed and verified experimentally. The model predicts a maximum theoretical TEM00 Gaussian-mode radius in the laser rod. This maximum mode radius is caused by a bifocusing o...

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Bibliographic Details
Published in:Applied optics (2004) 2002-10, Vol.41 (30), p.6385-6393
Main Authors: Murdough, Matthew P, Flusche, Brian M, Knize, Randall J, Zhdanov, Boris V
Format: Article
Language:English
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Summary:A thermo-optical model describing the cavity stability and TEM00-mode volume of a repetitively pumped solid-state laser is developed and verified experimentally. The model predicts a maximum theoretical TEM00 Gaussian-mode radius in the laser rod. This maximum mode radius is caused by a bifocusing of the cavity mode and is present even in gain-polarized materials that nominally suppress the effect of birefringence on beam polarization. The mode limitation effect is not eliminated by conventional optics and is reduced only marginally by the often-described technique of placing a second identical laser head in the cavity. A maximum mode radius implies a fundamental limit on the TEM00-mode energy that can be extracted from a given laser cavity.
ISSN:1559-128X
DOI:10.1364/AO.41.006385