Characterizing thermally-induced beam deformation of Lissajous laser modes in a high-power end-pumped Nd:YVO4 laser

Wan-Chen Tsai; Kuang-Ting Cheng; Pi-Hui Tuan

doi:10.1117/12.2658789

8 December 2022 Characterizing thermally-induced beam deformation of Lissajous laser modes in a high-power end-pumped Nd:YVO₄ laser

Wan-Chen Tsai, Kuang-Ting Cheng, Pi-Hui Tuan

Author Affiliations +

Proceedings Volume 12479, Optical Manipulation and Structured Materials Conference (OMC 2022); 124790A (2022) https://doi.org/10.1117/12.2658789
Event: Optics and Photonics International Congress, 2022, Yokohama, Japan

Abstract

Deformed beam structures of Lissajous transverse patterns induced under high-power pumping were explored in an off-axis pumped Nd:YVO₄ Laser within a degenerate cavity configuration. Experimental results show that beam structure variations including elongation, rotation and vagueness will occur with increasing pump power. Considering crystal axis rotation of gain medium induced by the inhomogeneous temperature gradient under high-power pumping, the derived resonant wave function of the spherical cavity can well reconstruct the experimental observation to further give an explicit relation between the tilt angle and aspect ratio of Lissajous patterns. It is believed that this finding can provide helpful information for the research on high-power structured light.

Citation Download Citation

Wan-Chen Tsai, Kuang-Ting Cheng, and Pi-Hui Tuan "Characterizing thermally-induced beam deformation of Lissajous laser modes in a high-power end-pumped Nd:YVO₄ laser", Proc. SPIE 12479, Optical Manipulation and Structured Materials Conference (OMC 2022), 124790A (8 December 2022); https://doi.org/10.1117/12.2658789

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