Tanaka Hiroki, Fujita Shogo, Kannari Fumihiko
Appl Opt. 2018 Jul 20;57(21):5923-5928. doi: 10.1364/AO.57.005923.
We demonstrate the high-power continuous-wave operation of a Pr:YLF laser end pumped by blue laser diodes. As the pump source, we used four 5 W single-emitter blue laser diodes and a >20 W fiber-coupled module. In single-emitter-diode pumping, we obtained pump-limited output powers of 6.7 and 3.7 W at 640 and 607 nm, respectively. We successfully suppressed thermal aberration and obtained an output power of 3.4 W at a slope efficiency of 25% at 640 nm with good beam quality in the fiber-coupled module pumping.
我们展示了由蓝色激光二极管端面泵浦的Pr:YLF激光器的高功率连续波运转。作为泵浦源，我们使用了四个5瓦单发射极蓝色激光二极管和一个功率大于20瓦的光纤耦合模块。在单发射极二极管泵浦中，我们分别在640纳米和607纳米处获得了6.7瓦和3.7瓦的泵浦限制输出功率。我们成功抑制了热像差，在光纤耦合模块泵浦中，在640纳米处获得了3.4瓦的输出功率，斜率效率为25%，光束质量良好。
