High-power high-stability Q-switched green laser with intracavity frequency doubling of diode-pumped composite ceramic Nd:YAG laser

doi:10.1088/1674-1056/21/9/094212

Abstract We successfully obtain high-average-power high-stability Q-switched green laser based on diode-side-pumped composite ceramic Nd:YAG in a straight plano-concave cavity. The temperature distribution in composite ceramic Nd:YAG crystal is numerically analyzed and compared with that of conventional Nd:YAG crystal. By use of a composite ceramic Nd:YAG rod and a type-II high gray track resistance KTP (HGTR-KTP) crystal, a green laser with an average output power of 165 W is obtained at a repetition rate of 25 kHz, with a diode-to-green optical conversion of 14.68%, and a pulse width of 162 ns. To the best of our knowledge, both the output power and optical-to-optical efficiency are the highest values for green laser systems with intracavity frequency doubling of this novel composite ceramic Nd:YAG laser to date. The power fluctuation at around 160 W is lower than 0.3% in 2.5 hours.

Keywords: high-average-power green laser high stability composite ceramic Nd:YAG rod

Received: 13 February 2012
Revised: 21 March 2012
Accepted manuscript online:

PACS:	42.55.Xi	(Diode-pumped lasers)
	42.60.Lh	(Efficiency, stability, gain, and other operational parameters)
	42.70.Hj	(Laser materials)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61107086, 61172010, and 61101058), the Science and Technology Committee of Tianjin, China (Grant No. 11JCYBJC01100), and the National High Technology Research and Development Program of China (Grant No. 2011AA010205).

Corresponding Authors: Wang Yu-Ye
E-mail: yuyewang@tju.edu.cn

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Wang Yu-Ye (王与烨), Xu De-Gang (徐德刚), Liu Chang-Ming (刘长明), Wang Wei-Peng (王卫鹏), Yao Jian-Quan (姚建铨) High-power high-stability Q-switched green laser with intracavity frequency doubling of diode-pumped composite ceramic Nd:YAG laser 2012 Chin. Phys. B 21 094212

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High-power high-stability Q-switched green laser with intracavity frequency doubling of diode-pumped composite ceramic Nd:YAG laser

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