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Opt Express. 2009 Jul 20;17(15):12869-74.

Laser properties of continuous-grown Nd:GdVO4/GdVO4 and Nd:YVO4/YVO4 composite crystals under direct pumping.

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  • 1National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, 150080, Harbin, China.


We present the laser properties of continuous-grown Nd:GdVO(4)/GdVO(4) and Nd:YVO(4)/YVO(4) composite crystals under LD direct pumping . The maximum CW output powers of 20W with a slope efficiency of 74.9% to absorbed pump power and 32W with 82.7% were obtained in Nd:GdVO(4)/GdVO(4) and Nd:YVO(4)/YVO(4) lasers, respectively. To our knowledge, this is the highest slope efficiency obtained in Nd(3+) lasers. Furthermore, at the repetition rate of 100 kHz, the minimum pulse width of 15.0 ns and 12.9 ns, the peak power of 11.8 kW and 22.4 kW were obtained for Nd:GdVO(4)/GdVO(4) and Nd:YVO(4)/YVO(4) lasers, respectively.

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