Thermal lensing effects for diode-end-pumped Nd:YVO4 and Nd:YAG lasers

Xiaoyuan Peng; Lei Xu; Anand Krishna Asundi

doi:10.1117/1.1787529

1 October 2004 Thermal lensing effects for diode-end-pumped Nd:YVO₄ and Nd:YAG lasers

Xiaoyuan Peng, Lei Xu, Anand Krishna Asundi

Author Affiliations +

Optical Engineering, Vol. 43, Issue 10, (October 2004). https://doi.org/10.1117/1.1787529

Abstract

The thermal effects of diode-end-pumped Nd:YVO₄ and Nd:YAG lasers are analyzed by a 2-D analytical model and a 3-D numerical model, respectively. The characteristics of the Nd:YVO₄ and Nd:YAG rods are comparatively discussed, including temperature distributions and thermal lensing effects. The model quantitatively separates the end effect from the index parts. Under the same pump configuration, we find that the temperature increase in the Nd:YVO₄ laser was 2 times larger than those in the Nd:YAG laser, while the thermal lensing coefficient of Nd:YAG was 27% higher than that of Nd:YVO₄. We also conclude that a good roundness of the Nd:YVO₄ laser beam profile is expected because nearly symmetric thermal lensing in the a and c axes is predicted from our modeling and measurement. Correspondingly, we perform experiments that are in good agreement with theoretical modeling for the thermal lensing of diode-pumped Nd:YVO₄ and Nd:YAG lasers.

©(2004) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Xiaoyuan Peng, Lei Xu, and Anand Krishna Asundi "Thermal lensing effects for diode-end-pumped Nd:YVO₄ and Nd:YAG lasers," Optical Engineering 43(10), (1 October 2004). https://doi.org/10.1117/1.1787529

Published: 1 October 2004

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