摘要We present a high efficient continuous wave Ho:YAG laser pumped by a diode-pumped Tm:YLF laser with a Fabry--Perot etalon tuning at 1.91μm. The maximum output power reaches 7.2W when the absorbed pump power is 10.8W. The slope efficiency (relative to the absorbed power) is 74.1%, and the Tm:YLF to Ho:YAG optical conversion efficiency of 60%, then the diode-to-Holmium optical conversion efficiency achieved is 21.0%. The wavelength is 2090nm when the transmission of output coupler is larger than 20%. The beam quality factor is M2~1.15 measured by the travelling knife-edge method.
Abstract：We present a high efficient continuous wave Ho:YAG laser pumped by a diode-pumped Tm:YLF laser with a Fabry--Perot etalon tuning at 1.91μm. The maximum output power reaches 7.2W when the absorbed pump power is 10.8W. The slope efficiency (relative to the absorbed power) is 74.1%, and the Tm:YLF to Ho:YAG optical conversion efficiency of 60%, then the diode-to-Holmium optical conversion efficiency achieved is 21.0%. The wavelength is 2090nm when the transmission of output coupler is larger than 20%. The beam quality factor is M2~1.15 measured by the travelling knife-edge method.
DUAN Xiao-Ming;YAO Bao-Quan;ZHANG Yun-Jun;SONG Cheng-Wei;GAO Jing;JU You-Lun;WANG Yue-Zhu. High Efficient Continuous-Wave Ho:YAG Laser Pumped by a Diode-pumped Tm:YLF Laser at Room Temperature[J]. 中国物理快报, 2008, 25(5): 1693-1696.
DUAN Xiao-Ming, YAO Bao-Quan, ZHANG Yun-Jun, SONG Cheng-Wei, GAO Jing, JU You-Lun, WANG Yue-Zhu. High Efficient Continuous-Wave Ho:YAG Laser Pumped by a Diode-pumped Tm:YLF Laser at Room Temperature. Chin. Phys. Lett., 2008, 25(5): 1693-1696.
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2008, Vol. 25 
