Modeling of energy-transfer upconversion and thermal effects in end-pumped quasi-three-level lasers

被引：80

作者：

Bjurshagen, S ^{[1
]}

Koch, R ^{[1
]}

机构：

[1] Royal Inst Technol, Dept Phys, S-10691 Stockholm, Sweden

来源：

APPLIED OPTICS | 2004年 / 43卷 / 24期

关键词：

D O I：

10.1364/AO.43.004753

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An analytical model of cw quasi-three-level lasers that includes the influence of energy-transfer upconversion (ETU) has been developed. The results of the general output modeling were applied to a laser with Gaussian beams, and rigorous numerical calculations have been made to study the influence of ETU on threshold, output power, spatial distribution of population-inversion density, and fractional thermal loading. The model was applied to a laser operating at 946 nm in Nd:YAG, where the dependence of laser-beam size on laser performance was investigated in particular. A simple model for the degradation of laser-beam quality from a transversally varying saturated gain is proposed that is in good agreement with measurements of the laser in a plane-plane cavity. (C) 2004 Optical Society of America.

引用

页码：4753 / 4767

页数：15

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