Passive mode locking of a Nd:YAG laser with co-doped Nd, Cr:YAG as saturable absorber
Yang Lin (杨林)ab, Feng Bao-Hua (冯宝华)a, Zhang Zhi-Guo (张治国)a, Gaebler Volkerc, Liu Bai-Ning (刘百宁)c, Eichler Hansc
a Laboratory of Optical Physics, Institute of Physics and Center for Condensed Matter Physics Chinese Academy of Sciences, Beijing 100080, China; b State Key Laboratory of Laser Technology, Huazhong University of Science and Technology, Wuhan 430074, China; c Optical Institute, Technical University Berlin, Str. d. 17. Juni 135,D-10623 Berlin, Germany
Abstract We demonstrate the characteristics of relatively low saturation intensity using co-doped Nd, Cr:YAG as saturable absorber for passively mode locking the Nd:YAG laser. The difference of the saturation intensity between Q-switched and mode-locked operation in co-doped Nd, Cr:YAG was only one to two orders of magnitude, while Cr:YAG was generally reported at a difference of five orders of magnitude. More than 80% mode locking modulation depth was achieved at an incident pump power of 4.4W, corresponding to an intracavity intensity of $6×10^4$W/cm$^2$, using a 68cm long plano-concave cavity.
Received: 02 December 2002
Revised: 11 April 2003
Accepted manuscript online:
(Doped-insulator lasers and other solid state lasers)
Fund: Project supported by the National Natural Science Foundation of China (Grant No 60278024).
Cite this article:
Yang Lin (杨林), Feng Bao-Hua (冯宝华), Zhang Zhi-Guo (张治国), Gaebler Volker, Liu Bai-Ning (刘百宁), Eichler Hans Passive mode locking of a Nd:YAG laser with co-doped Nd, Cr:YAG as saturable absorber 2003 Chinese Physics 12 886
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