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High beam quality of a Q-switched 2-µm Tm,Ho:LuVO4 laser

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Abstract

A diode-end-pumped 2.05-µm Q-switched Tm,Ho:LuVO4 laser is reported in this paper. The cryogenic Tm3+ (5.0 at.%),Ho3+ (0.5 at.%):LuVO4 crystal was pumped by an 800-nm laser diode. At a pulse repetition frequency of 10 kHz, the maximum average output power of 3.77 W was achieved at 77 K when an incident pump power of 14.7 W was used. The slope efficiency and optical–optical conversion efficiency were 28.3 and 25.6%, respectively. The maximum per pulse energy was 2.54 mJ for a pulse duration of 69.9 ns. The beam quality factor Mx2 was approximately 1.17 and My2 was approximately 1.01 for the Tm,Ho:LuVO4 laser.

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Acknowledgements

This work was supported by The National Natural Science Foundation of China (Grant nos. 61378029, 61775053 and 51777046), in part by The Science Foundation for Outstanding Youths of Heilongjiang Province (JC2016016), in part by The Science Foundation for Youths of Heilongjiang Province (QC2017078), and in part by the PSRDF of Heilongjiang Programme (LBH-Q14142).

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Authors and Affiliations

  1. The Higher Educational Key Laboratory for Measuring and Control Technology and Instrumentations of Heilongjiang Province, Harbin University of Science and Technology, Harbin, 150080, China

    Wei Wang, Xining Yang, Linjun Li, Long Zhou & Xiaoyang Yu

  2. Heilongjiang Province Key Laboratory of Optoelectronics and Laser Technology, Heilongjiang Institute of Technology, Harbin, 150050, China

    Xining Yang, Linjun Li, Long Zhou, Yunfeng Bai, Wenqiang Xie & Guangchao Ye

  3. School of Opto-electronic Information Science and Technology, Yantai University, Yantai, 264005, China

    Yingjie Shen

  4. College of Sciences, Harbin University of Science and Technology, Harbin, 150080, China

    Yuqiang Yang

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  1. Wei Wang
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  2. Xining Yang
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  4. Linjun Li
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  10. Xiaoyang Yu
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Corresponding authors

Correspondence to Linjun Li or Xiaoyang Yu.

Additional information

This article is part of the topical collection “Mid-infrared and THz Laser Sources and Applications” guest edited by Wei Ren, Paolo De Natale and Gerard Wysocki.

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Wang, W., Yang, X., Shen, Y. et al. High beam quality of a Q-switched 2-µm Tm,Ho:LuVO4 laser. Appl. Phys. B 124, 82 (2018). https://doi.org/10.1007/s00340-018-6949-2

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