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搭建了声光调Q脉冲光纤激光器实验系统,通过调节声光调制器(AOM)驱动信号的占空比,研究了驱动信号占空比对声光调Q脉冲光纤激光器输出脉冲重频的影响。结果显示,当AOM驱动信号频率固定时,随着占空比的减小,输出脉冲重频依次为AOM驱动信号频率、AOM驱动信号频率的1/2、1/3。实验结果表明,在声光调Q脉冲光纤激光器中,输出脉冲重频受AOM驱动信号频率和占空比的共同影响。
The experimental system of acousto-optic Q-switched fiber laser was set up. By adjusting the duty cycle of the AOM drive signal, the effect of the duty cycle of the drive signal on the output pulse repetition rate of acousto-optic Q-switched fiber laser was studied. The results show that when the AOM drive signal frequency is fixed, the output pulse re-frequency followed by the AOM drive signal frequency and the AOM drive signal frequency is 1/2, 1/3, as the duty cycle decreases. Experimental results show that in the acousto-optic Q-switched fiber laser, the output pulse repetition frequency is affected by the AOM driving signal frequency and the duty cycle.