National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 15001, China.
Opt Lett. 2012 Sep 1;37(17):3558-60. doi: 10.1364/OL.37.003558.
An efficient 2 μm in-band pumped Ho:YAG laser was demonstrated. The resonator involves two Ho:YAG crystals, each of which was dual-end-pumped by two orthogonally polarized diode-pumped Tm:YLF lasers. The maximum continuous wave output power of 103 W was achieved, corresponding to a slope efficiency of 67.8% with respect to the incident pump power and an optical-to-optical conversion efficiency of 63.5%. Under Q-switched mode, we obtained 101 W laser output at 30 kHz, corresponding to a slope efficiency of 66.2%. The beam quality or M2 factor was found to be less than 2.
我们演示了一种高效的 2μm 带内激发 Ho:YAG 激光器。该谐振腔包含两个 Ho:YAG 晶体，每个晶体都由两个正交偏振的二极管泵浦 Tm:YLF 激光器进行双端泵浦。获得了 103W 的最大连续波输出功率，相对于入射泵浦功率的斜率效率为 67.8%，光光转换效率为 63.5%。在 Q 开关模式下，我们在 30kHz 时获得了 101W 的激光输出，斜率效率为 66.2%。光束质量或 M2 因子被发现小于 2。
