报道了一种采用常规微秒级高功率脉冲二极管(LD)阵列抽运固体激光工作物质获得毫秒级长脉冲激光输出的方法, 可获得重复频率高工作寿命长的毫秒级长脉冲激光输出。将总输出峰值功率为1.2 kW,占空比为5%的六个二极管线阵分为两组, 通过分时抽运NdYAG棒的方式, 获得了脉冲宽度约为1 ms的激光输出。抽运电流为85 A时, 输出激光平均功率为11.2 W。

A new approach to obtain millisecond-level long-pulse solid-state laser, pumped by some common pulsed high-power laser diode(LD) arrays with the pump pulse width of several hundreds microseconds, has been carried out. The long-pulse laser runs with high repetition rate and long life time. The pump laser diode arrays are six dual-line bars with a total peak power of 1.2 kW and duty cycle of 5%, which are divided into two groups. Based on time division pumping technology, NdYAG laser rod is pumped by the two groups successively. An average output power of 11.2 W and laser pulse width of about 1 ms have been obtained under pump electric current of 85 A.