Improving beam structure stability of high-power Lissajous modes by an off-axis end-pumped YVO4/Nd:YVO4 laser

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

doi:10.1117/12.2658774

8 December 2022 Improving beam structure stability of high-power Lissajous modes by an off-axis end-pumped YVO₄/Nd:YVO₄ laser

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

Author Affiliations +

Proceedings Volume 12479, Optical Manipulation and Structured Materials Conference (OMC 2022); 1247903 (2022) https://doi.org/10.1117/12.2658774
Event: Optics and Photonics International Congress, 2022, Yokohama, Japan

Abstract

Beam structure stabilization for the high-power structured modes with transverse patterns as Lissajous figures created by an off-axis pumped degenerate-cavity laser is explored. Through the employment of a YVO₄/Nd:YVO₄composite gain crystal with the front undoped segment as an effective heat spreader, it has been experimentally verified that not only the mode stability and purity of the generated Lissajous beams are significantly improved but the output power efficiency is obviously enhanced. With superior mitigation ability against the thermal aberration under high-power pumping, the proposed scheme of using the composite gain crystal to replace conventional uniformly doped crystal can offer a promising solution to realize high-power, high-order structured beams with excellent beam stability.

Citation Download Citation

Pi-Hui Tuan, Wan-Chen Tsai, and Kuang-Ting Cheng "Improving beam structure stability of high-power Lissajous modes by an off-axis end-pumped YVO₄/Nd:YVO₄ laser", Proc. SPIE 12479, Optical Manipulation and Structured Materials Conference (OMC 2022), 1247903 (8 December 2022); https://doi.org/10.1117/12.2658774

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