17 April 2006 Numerical simulation of multiple modes in solid state lasers
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In this paper, we present a method for a 3D-simulation of the population inversion and photon density in a solid state laser. The method approximates the electrical field distribution of the beam by a finite number of eigenmodes. These modes can be computed by a Gauss mode analysis. The population inversion is approximated by a finite volume discretization. Using the classical rate equations, we derive suitable rate equations for the discretized population inversion and the eigenmodes of a laser. The simulation results show the influence of the pump configuration to the distribution of the eigenmodes. Therefore, the new simulation method can be used to optimize the beam quality of a solid state laser.
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Britta Heubeck, Christoph Pflaum, "Numerical simulation of multiple modes in solid state lasers", Proc. SPIE 6190, Solid State Lasers and Amplifiers II, 61900X (17 April 2006); doi: 10.1117/12.661514; https://doi.org/10.1117/12.661514

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