Thermal modeling of solid state lasers with super-Gaussian pumping profiles

Wenjie Xie; Young Key Kwon; Wentao Hu; Feng Zhou

doi:10.1117/1.1572499

1 June 2003 Thermal modeling of solid state lasers with super-Gaussian pumping profiles

Wenjie Xie, Young Key Kwon, Wentao Hu, Feng Zhou

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Optical Engineering, Vol. 42, Issue 6, (June 2003). https://doi.org/10.1117/1.1572499

The pump beam for an end-pumped solid state laser can likely be fit by a super-Gaussian beam. We normalize the super-Gaussian beam for different orders (m). Numerical temperature solutions are obtained for super-Gaussian beams using the finite element method. We find that these numerical temperature solutions can be fit by a Gaussian function. This is important as all of the subsequent thermal radial and tangential stresses, refractive index changes, optical path differences (OPDs), birefringences and depolarization losses can be solved analytically and they follow Gaussian profiles. Different m have different thermal effects as well as different overlap efficiencies. We analyze the effects of different m on different pump powers, different pump beam sizes, and different rod radii. This analysis could provide valuable data for correcting phase distortions of high-power operation.

©(2003) Society of Photo-Optical Instrumentation Engineers (SPIE)

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Wenjie Xie, Young Key Kwon, Wentao Hu, and Feng Zhou "Thermal modeling of solid state lasers with super-Gaussian pumping profiles," Optical Engineering 42(6), (1 June 2003). https://doi.org/10.1117/1.1572499

Published: 1 June 2003

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