• High Power Laser Science and Engineering
  • Vol. 12, Issue 4, 04000e41 (2024)
Jianlei Wang1, Zihao Tong2, Changsheng Zheng2, Tianyi Du2..., Yongguang Zhao2,* and Chun Wang1,*|Show fewer author(s)
Author Affiliations
  • 1Key Laboratory of Laser & Infrared System, Ministry of Education, Shandong University, Qingdao, China
  • 2Jiangsu Collaborative Innovation Center of Advanced Laser Technology and Emerging Industry, Jiangsu Normal University, Xuzhou, China
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    DOI: 10.1017/hpl.2024.22 Cite this Article Set citation alerts
    Jianlei Wang, Zihao Tong, Changsheng Zheng, Tianyi Du, Yongguang Zhao, Chun Wang, "High-efficiency tandem Ho:YAG single-crystal fiber laser delivering more than 100 W output power," High Power Laser Sci. Eng. 12, 04000e41 (2024) Copy Citation Text show less

    Abstract

    We report on a high-efficiency, high-power tandem Ho:YAG single-crystal fiber (SCF) laser in-band pumped by a Tm-doped fiber laser at 1907 nm. In addition to the uniform heat distribution resulting from the large surface-to-volume ratio of this fiber-like thin-crystal rod, the long gain region provided by the tandem layout of two SCFs enables high lasing efficiency and power handling capability. More than 100 W output power is achieved at 2.1 μm, corresponding to a slope efficiency of 70.5% and an optical-to-optical efficiency of 67.6%. To the best of our knowledge, this is the highest output power and efficiency ever reported from SCF lasers in the 2-μm spectral range.
    1/ηS=1/η0(1+2γ/γOC), ()

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    γ=ln(1L), ()

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    γOC=ln(1TOC), ()

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    Jianlei Wang, Zihao Tong, Changsheng Zheng, Tianyi Du, Yongguang Zhao, Chun Wang, "High-efficiency tandem Ho:YAG single-crystal fiber laser delivering more than 100 W output power," High Power Laser Sci. Eng. 12, 04000e41 (2024)
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