由488纳米氮化铟镓激光二极管泵浦的544纳米掺铽氟化锂钇激光器以及采用腔倒空开关的高峰值功率运行。

544-nm Tb-doped LiYF laser pumped by 488-nm InGaN laser diodes and high peak power operation with cavity-dumped -switching.

作者信息

Kannari Fumihiko, Ishikawa Tomohiro, Tanaka Hiroki, Shioya Yuta, Yasuhara Ryo

出版信息

Appl Opt. 2025 Jan 1;64(1):83-90. doi: 10.1364/AO.543155.

Abstract

We report a 544-nm -doped (Tb:YLF) laser pumped by two ∼488- , 2-W InGaN laser diodes in continuous-wave (CW) and cavity-dumped -switch operations. We obtained a CW output power of 482 mW with a slope efficiency of 43%. Cavity-dumped -switching generated 6-ns pulses with a pulse energy of 40 µJ at a repetition frequency of 100 Hz, resulting in the highest peak power of 6.7 kW ever reported for -based lasers, to our knowledge. We analytically examined the influence of excited-state absorption and energy transfer upconversion on the small-signal gain of a Tb:YLF laser and concluded that their influence was negligible under our operating conditions.

摘要

我们报道了一种由两个约488纳米、2瓦的氮化铟镓激光二极管泵浦的544纳米掺铽钇锂氟化物（Tb:YLF）激光器，其工作于连续波（CW）和腔倒空开关模式。我们获得了482毫瓦的连续波输出功率，斜率效率为43%。腔倒空开关模式产生了6纳秒的脉冲，脉冲能量为40微焦，重复频率为100赫兹，据我们所知，这是基于铽钇锂氟化物激光器所报道的最高峰值功率，达到了6.7千瓦。我们分析研究了激发态吸收和能量转移上转换对Tb:YLF激光器小信号增益的影响，并得出结论，在我们的工作条件下，它们的影响可以忽略不计。