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LED-side-pumped passively Q-switched Nd:GdVO4 laser without active temperature control

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Abstract

Nd:GdVO4 has the advantages of a small thermal expansion coefficient, a large absorption bandwidth, and a large absorption and emission cross section, making it a good gain material for LED-pumping without active temperature control. In this paper, the LED-pumped Nd:GdVO4 laser was first generated in the quasi-continuous-wave and the passively Q-switched regime. With the incident pump energy of 8.0 mJ, the Nd:GdVO4 laser demonstrated energy of 195 μJ at 1063 nm in the quasi-continuous-wave regime, the slope efficiency was 4.7%, and the optical conversion efficiency was 2.4%. In the passively Q-switched regime, Cr:YAG was used as a saturable absorber and the energy obtained was 6.53 μJ with a pulse duration of 806.8 ns. These experimental results indicated the application prospect of LED-pumped lasers.

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Data availability

Data underlying the results presented in this paper are available upon request to the corresponding author.

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Funding

National Natural Science Foundation of China (NSFC) (61675210).

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Authors and Affiliations

  1. State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, 866 Yuhangtang Rd, Hangzhou, 310058, China

    Cuifang Kuang

  2. Aerospace Information Research Institute, Chinese Academy of Science, 9 Dengzhuang Rd, Beijing, 100094, China

    Hong Xiao, Wenqi Ge, Mingshan Li, Shuzhen Nie, Fanghui Zhong & Fei Li

  3. University of Chinese Academy of Sciences, 1 Yanqi Rd, Beijing, 100049, China

    Tianzhuo Zhao, Wenqi Ge, Fanghui Zhong & Fei Li

  4. Optilab LLC, 600 E Camelback Rd, Phoenix, AZ, 85012, USA

    Ke Huang

Authors
  1. Hong Xiao
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  2. Tianzhuo Zhao
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  3. Wenqi Ge
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  5. Shuzhen Nie
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  9. Cuifang Kuang
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Hong Xiao, Tianzhuo Zhao,Wenqi Ge and Mingshan Li wrote the main manuscript text.

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Correspondence to Tianzhuo Zhao.

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Xiao, H., Zhao, T., Ge, W. et al. LED-side-pumped passively Q-switched Nd:GdVO4 laser without active temperature control. Appl. Phys. B 129, 122 (2023). https://doi.org/10.1007/s00340-023-08068-x

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