Infrared and Laser Engineering, Volume. 46, Issue 2, 205002(2017)
Experiment comparison of acousto-optical Q-switching and RTP electro-optical Q-switching of high repetition frequency Nd:YVO4 laser
A laser diode(LD) end-pumped adhesive-free bond composite Nd:YVO4 Acousto Optical(AO) Q-switched and RTP Electro Optical(EO) Q-switched laser were reported at the same experimental condition. TEM00 operation of 1 064 nm laser were obtained at repetition rate of 500 kHz in AO Q-switched regime and 200 kHz in EO Q-switched regime. And it was the first time to compare the output performance of AO Q-switched operation and RTP EO Q-switched operation at high repetition rate. In EO Q-switched regime, the average output power reached to 12.13 W with the pulse-width of 16.65 ns. In AO Q-switched regime, the average output power reached to 13.56 W with the pulse-width of 27.27 ns. The experimental results show that RTP EO Q-switched operation has better performance of turn-off. However, due to limitation of high voltage driver, EO Q-switched is not able to achieve with shorter pulse width and higher peak power laser under higher repetition rate operation. The AO Q-switched operation that has better output characteristic at higher repetition rate, and it would be the preferred method to obtain Q-switched laser which the repetition rate is high as thousands of hundreds and even mega.
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Zhang Jian, Yu Yongji, Jiang Chengyao, Wang Zijian, Wang Bin, Chen Xinyu, Jin Guangyong. Experiment comparison of acousto-optical Q-switching and RTP electro-optical Q-switching of high repetition frequency Nd:YVO4 laser[J]. Infrared and Laser Engineering, 2017, 46(2): 205002
Category: 激光器技术
Received: Jun. 4, 2016
Accepted: Jul. 9, 2016
Published Online: Mar. 31, 2017
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