High power red laser at 671nm by intracavity frequency doubling of a Nd:YVO4 laser
Yao Ai-Yun (姚爱云)a, Hou Wei (侯玮)a, Li Hui-Qing (李惠清)a, Bi Yong (毕勇)b, Li Rui-Ning (李瑞宁)a, Geng Ai-Cong (耿爱丛)a, Kong Yu-Peng (孔宇鹏), Cui Da-Fu (崔大复)a, Xu Zu-Yan (许祖彦)a
a Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Beijing 100080, China; b Academy of Opto-electronics, Chinese Academy of Sciences,Beijing 100080, China
Abstract This paper reports a high-power quasi-continuous wave (quasi-CW) source of red laser at 671nm obtained by intracavity frequency doubling of a double-end-pumped 1342nm Nd:YVO laser, based on the nonlinear crystal LiBO(LBO) The average output power of 2.9W at 671nm was obtained at the incident pump power of 19.5W. The overall optical to optical efficiency is 14.9%. We have analyzed the influence of the optimal pump size, the optimal focal position and the reduction of the thermal effect on high output. The combination of double-end-pumping and the quasi-CW performance greatly reduces the thermal effect.
(Beam characteristics: profile, intensity, and power; spatial pattern formation)
Fund: Project supported by the Innovation Program of the Chinese Academy of Sciences (Grant No KJCX1-05), the National High Technology Development Program of China (Grant No 2002AA311120), and the Council for Science and Technology of Beijing
Cite this article:
Yao Ai-Yun (姚爱云), Hou Wei (侯玮), Li Hui-Qing (李惠清), Bi Yong (毕勇), Li Rui-Ning (李瑞宁), Geng Ai-Cong (耿爱丛), Kong Yu-Peng (孔宇鹏), Cui Da-Fu (崔大复), Xu Zu-Yan (许祖彦) High power red laser at 671nm by intracavity frequency doubling of a Nd:YVO4 laser 2005 Chinese Physics 14 1433
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