Gao Jing, Yu Xin, Chen Fei, Li Xudong, Yan Renpeng, Zhang Kun, Yu Junhua, Wang Yuezhu
National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, 150080, Harbin, China.
Opt Express. 2009 Mar 2;17(5):3574-80. doi: 10.1364/oe.17.003574.
We present a diode-pumped high-power continuous-wave (cw) laser at 912 nm based on the quasi-three-level (4)F(3/2)-->(4)4I(9/2) transition in Nd:GdVO(4) crystal. By using a 5-mm-long conventional bulk crystal with 0.2at.% Nd(3+)-doped concentration, the maximum output power of 12.0 W is obtained, with a slope efficiency of 29.3%. To the best of our knowledge, this is the highest output at 912 nm generated by diode-pumped Nd:GdVO(4) lasers. Furthermore, 3.2 W 456 nm deep-blue light is acquired by frequency doubling, resulting in an optical-to-optical efficiency of 8.0%. The short-term power instability of the blue laser is less than 3%.
