Lasers from 1I6 to 3F4 transitions were first demonstrated in a Pr3+∶YLF crystal by inserting a birefringent filter.Output powers up to 2.44 W,2.10 W,2.01 W,and 2.42 W were obtained at 691.7 nm,701.4 nm,705.0 nm,and 708.7 nm,respectively.Their slope efficiencies were 19.8％,16.5％,15.8％,and 19.4％,respectively.The M2 and My2 factors were measured to be 2.29 and 2.03 at 691.7 nm,2.23 and 1.86 at 701.4 nm,2.31 and 2.08 at 705.0 nm,and 2.41 and 2.04 at 708.7 nm,with corresponding power fluctuations of less than 5.3％,5.6％,5.8％,and 2.9％.
Pr3+∶YLF laserhigh power laserPr3+∶YLF crystal
方润、戴荣彬、许惠英、蔡志平
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Department of Electronic Engineering,Xiamen University,Xiamen 361005,China
School of Physics and Electronic Science,Guizhou Normal University,Guiyang 550001,China
Fujian Key Laboratory of Ultrafast Laser Technology and Applications,Xiamen University,Xiamen 361005,China
National Natural Science Foundation of China(NSFC)National Key Research and Development Program of China
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