Karki Krishna, Fedorov Vladimir, Martyshkin Dmitry, Mirov Sergey
Opt Express. 2021 Feb 1;29(3):4287-4295. doi: 10.1364/OE.417301.
We report a flashlamp pumped mechanically Q-switched (MQS) 2.94 μm Er:YAG laser based on a spinning mirror with a highest output energy of 805 mJ at a pulse duration of 61 ns and 13 MW of peak power at 1 Hz repetition rate. This record output energy was achieved with the use of 300 mm long MQS Er:YAG laser cavity consisting of a 70% output coupler, 7 × 120 mm AR coated Er(50%):YAG crystal, and 4200 rad/s angular speed of the spinning mirror. The pulse jitter was also measured by using optical triggering and was smaller than 10 ns for 150 ns Q-switched pulses, which could be applicable to many laser applications where precise synchronization of pulses is required.
我们报道了一种基于旋转镜的闪光灯泵浦机械调Q（MQS）2.94μm铒钇铝石榴石激光器，在脉冲持续时间为61ns时最高输出能量为805mJ，在1Hz重复频率下峰值功率为13MW。通过使用由70%输出耦合器、7×120mm增透膜铒（50%）：钇铝石榴石晶体和旋转镜4200rad/s角速度组成的300mm长的MQS铒钇铝石榴石激光腔，实现了这一创纪录的输出能量。还通过光学触发测量了脉冲抖动，对于150ns调Q脉冲，其小于10ns，这可应用于许多需要精确脉冲同步的激光应用中。
