High-power, high-energy Ho:YAG oscillator pumped by a Tm-doped fiber laser
High-power, high-energy Ho:YAG oscillator pumped by a Tm-doped fiber laser
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DOI：
10.3788/col201513.121402
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发表时间：
2015-12
影响因子：
3.5
通讯作者：
E. Ji;Qiang Liu;Zhenyue Hu;P. Yan;M. Gong
中科院分区：
文献类型：
--
作者：
E. Ji;Qiang Liu;Zhenyue Hu;P. Yan;M. Gong
提出了一种由掺铥光纤激光器谐振泵浦的高功率高能Ho:YAG振荡器。波长为2.09 μm, M2≈1.48时，最大连续输出功率为38 W，斜率效率为51.9%。在调q模式下，当脉冲重复频率为1khz时，脉冲能量最大可达12.8 mJ，峰值功率为514.5 kW。在此基础上，对系统的热透镜效应进行了理论研究，给出了不同泵浦功率下激光晶体的横向电磁模半径。
A high-power, high-energy Ho:YAG oscillator resonantly pumped by a Tm-doped fiber laser is presented. A maximum continuous output power of 38 W with a slope efficiency of 51.9% is achieved at the wavelength of 2.09 μm, and M2≈1.48. In the Q-switching regime, the maximum pulse energy of 12.8 mJ, corresponding to a 514.5 kW peak power, is obtained at the pulse repetition frequency of 1 kHz. Furthermore, the thermal lens effect of the system is studied theoretically, and the radius of the transverse electromagnetic (TEM00) mode of the laser crystal under different pump powers is given.