用国产连续输出功率为1.5 W的半导体激光泵浦Nd:YAG激光器，获得了预激光调Q单纵模激光输出，调Q脉冲幅度起伏小于±1%，输出单纵模线宽小于25 MHz。

This paper describes the Performance of a prelase Q-switched singlelongitudinal mode Nd:YAG laser which was end pumped by a diode laser array withoutput of CW 1.5 W. This oscillator provides single longitudinal mode Q-switched pulsewith instability less than ±1% at 100 nsec duration and the linewidth less than 25 MHz.