Thermal effects of diode-end-pumped Nd:YVO4 solid state laser

Anand Krishna Asundi; Xiaoyuan Peng; Yihong Chen; Zhengjun Xiong; Gnian Cher Lim; HongYu Zheng

doi:10.1117/12.368474

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4 November 1999 Thermal effects of diode-end-pumped Nd:YVO₄ solid state laser

Anand Krishna Asundi, Xiaoyuan Peng, Yihong Chen, Zhengjun Xiong, Gnian Cher Lim, HongYu Zheng

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Proceedings Volume 3898, Photonic Systems and Applications in Defense and Manufacturing; (1999) https://doi.org/10.1117/12.368474
Event: International Symposium on Photonics and Applications, 1999, Singapore, Singapore

Abstract

Thermal effects of diode end-pumped Nd:YVO₄ laser are analyzed in this paper. A laser interferometer is set up to determine the optical path difference resulting from thermal effects in crystal under lasing condition. The beam distortions in Nd:YVO₄ rod are measured with a He-Ne laser at wavelength of 632.8nm. The changes of interference patterns record the deformation of the rod with increasing pump power. The experimental and theoretical curves of effective thermal focal lengths versus pump power are obtained, and it is found that the theoretical analysis agrees well with experimental measurement. With the analytic results of thermal effects, an optimized resonator is designed to insure that the laser operates in stable mode with an output power of 3.2W, slope efficiency of 52 percent and M² factor of 1.19.

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Anand Krishna Asundi, Xiaoyuan Peng, Yihong Chen, Zhengjun Xiong, Gnian Cher Lim, and HongYu Zheng "Thermal effects of diode-end-pumped Nd:YVO₄ solid state laser", Proc. SPIE 3898, Photonic Systems and Applications in Defense and Manufacturing, (4 November 1999); https://doi.org/10.1117/12.368474

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