Martyshkin Dmitry, Karki Krishna, Fedorov Vladimir, Mirov Sergey
Opt Express. 2021 Jan 18;29(2):2387-2393. doi: 10.1364/OE.416574.
We report on a RT gain-switched Fe:ZnSe master oscillator power amplifier (MOPA) system tunable over 3.8-5.0 µm pumped by radiation of Er:YAG laser operating at 2.94 µm. The mechanically Q-switched Er:YAG laser with output energy up to 220 mJ was used as a pump source for a master oscillator and three-stage power amplifier. The maximum output energies in 200 ns pulses exceeded 60, 56, and 48 mJ at 4.4, 4.3, and 4.1 µm, respectively, under 220 mJ of pump energy. The extraction energy efficiencies were measured to be 25, 30, and 40% at the first, second, and third stages, respectively.
我们报道了一种由工作在2.94μm的Er:YAG激光辐射泵浦、调谐范围为3.8 - 5.0μm的RT增益开关Fe:ZnSe主振荡器功率放大器（MOPA）系统。具有高达220mJ输出能量的机械调Q Er:YAG激光器被用作主振荡器和三级功率放大器的泵浦源。在220mJ的泵浦能量下，200ns脉冲中的最大输出能量在4.4μm、4.3μm和4.1μm处分别超过60mJ、56mJ和48mJ。测量得到第一级、第二级和第三级的提取能量效率分别为25%、30%和40%。
