A high-power high-stability Q-switched green laser with intracavity frequency doubling using a diode-pumped composite ceramic Nd：YAG laser |
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| Authors: | Wang Yu-Ye Xu De-Gang Liu Chang-Ming Wang Wei-Peng and Yao Jian-Quan |
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| Institution: | [1]Institute of Laser and Optoelectronics, College of Precision Instrument and Optoelectronics Engineering, Tianfin University, Tianjin 300072, China [2]Key Laboratory of Optoelectronics Information Science and Technology, Tianjin University, Ministry of Education, Tianjin 300072, China |
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| Abstract: | We successfully obtain a 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 using 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. |
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| Keywords: | high-average-power green laser high stability composite ceramic Nd：YAG rod |
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