Finite Element Simulation of Solid State Laser Resonators

被引：0

作者：

Wohlmuth, Matthias ^{[1
]}

Altmann, Konrad ^{[2
]}

Pflaum, Christoph ^{[1
]}

机构：

[1] Univ Erlangen Nurnberg, Dept Comp Sci Syst Simulat 10, Cauerstr 6, D-91058 Erlangen, Germany

[2] LAS CAD GmbH, D-80639 Munich, Germany

来源：

LASER RESONATORS AND BEAM CONTROL XI | 2009年 / 7194卷

关键词：

Finite elements; wave equation; Schroedinger equation; Helmholtz equation; space-dependent rate equations; resonator eigenmodes;

D O I：

10.1117/12.808121

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The complex physical optics behavior in modern solid state lasers can only approximately be described using common simulation techniques, such as a Gaussian mode analysis or beam propagation methods. For this reason we present a new 3-dimensional, time-dependent method to model the laser beam in a resonator in a more comprehensive way. We transform the wave equation by a special ansatz and solve the resulting equation, which is similar to a Schroedinger equation, by a finite element analysis. In this paper we explain our new approach and present first numerical results for a simple laser cavity. The results are compared with those of a dynamic multimode analysis using Gaussian eigenmodes.

引用

页数：10

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