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<p>We report a continuous ultraviolet laser operating at 319.804&#xa0;nm by intracavity frequency-doubled Pr:YLF laser pumped by fiber-coupled GaN blue laser diodes. The pump source is a fiber coupled LD module with the maximum output power of approximately 40&#xa0;W which consists of eight GaN blue LDs with a maximum single-emitter output power of 5&#xa0;W. Using a 18&#xa0;mm long Pr:YLF crystal and a 10&#xa0;mm long LBO crystal as nonlinear frequency doubler, coherent radiation with an output power of 9.3 W was achieved with respect to the total pump power, leading to a efficiency of 24.8% from pump power to output power.</p>

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9.3 W continuous-wave intracavity frequency-doubled Pr:YLF laser at 320 nm pumped by fiber-coupled GaN blue laser diodes

  • 期刊论文

  • 发表日期：

    2025年6月5日

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  • Na Niu,
  • Shuangshuang Pu,
  • Wei Dou,
  • Fang Ma,
  • Yijing Fang,
  • Wenlong Shi,
  • Quan Zheng

摘要

We report a continuous ultraviolet laser operating at 319.804 nm by intracavity frequency-doubled Pr:YLF laser pumped by fiber-coupled GaN blue laser diodes. The pump source is a fiber coupled LD module with the maximum output power of approximately 40 W which consists of eight GaN blue LDs with a maximum single-emitter output power of 5 W. Using a 18 mm long Pr:YLF crystal and a 10 mm long LBO crystal as nonlinear frequency doubler, coherent radiation with an output power of 9.3 W was achieved with respect to the total pump power, leading to a efficiency of 24.8% from pump power to output power.