中文摘要：

介绍一种利用LD泵浦激光振荡-氙灯泵浦激光放大的混合型MOPA（Master Oscillator Power Amplifier）系统。实验中利用信号发生器SG产生频率和宽度可调的控制脉冲去控制LD电源，同时提供另一路延时可调脉冲信号去触发由两级氙灯泵浦的Nd：YAG激光器组成的放大级。从而将振荡-放大器电源同步，使LD泵浦的振荡级辐射激光经过氙灯泵浦放大级后获得同步放大。得到重复率为1Hz，脉冲能量为1．8mJ，脉宽为8ns的自调Q激光脉冲输出。将此激光束耦合入芯径为100μm的多模石英光纤中，观察到由背向受激布里渊散射（SBS）引起的位相共轭现象。

英文摘要：

This paper introduces a Hybrid Master Oscillator Power Amplifier （MOPA） system usmg a LD pumped oscillator and a Xe lamp pumped amplifier. In the experiment a signal generator is used to synchronize the power supplies of oscillator and amplifier so that the output beam of the LD pumped oscillator has been amplified through the amplifier composed by two Xe lamp pumped Nd：YAG. Self-Q-switched laser pulses with repetition rate of IHz, and output energy of 1.8mJ and pulse duration of 8ns were obtained. When this laser beam was coupled into a multi-mode quartz fiber with diameter of 100p, m, a phase conjugated beam caused by backwards Stimulated Brillouin Scattering （SBS） could be observed.