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QCW diode-pumped 654 W AO Q-switched Nd:YAG rod oscillator-amplifier laser |
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| Authors: | Xiaodong Yang Yong Bo Aicong Geng |
| Institution: | a Department of Physics, Jiaying College, Meizhou, Guangdong 514015, China b Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China c Department of Mathematics and Physics, Beijing Technology and Business University, Beijing 100048, China |
| Abstract: | A diode laser-pumped acoustic-optic Q-switched Nd:YAG master-oscillator power amplifier laser is presented. The laser is quasi continuously pumped at 1.1 kHz with a pulse width of 172 μs, and the ultrasonic frequency of the AO Q-switcher is set at a higher value (53 kHz). The master oscillator is designed as a thermally near-unstable-resonator, which presents an average output power of 48 W with a beam quality value of M2 = 1.41 and a Q-switching pulse duration of 121 ns. The maximum average power of the MOPA system is 654 W, and the beam quality is M2 = 6. |
| Keywords: | QCW LD pumped Acoustic-optic Q-switched Pulse repetition rate Initial population inversion density |
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