LD侧面泵浦电光调Q532 nm脉冲激光器

摘要

为了实现高可靠、窄脉宽、高峰值功率激光输出,采用侧面泵浦技术和电光调Q技术,设计出一种激光二极管侧面泵浦电光调Q全固态绿光激光器.采用结构简单、紧凑的平-平腔设计,其端镜和输出镜均为平面镜,获得较稳定的侧面泵浦Nd:YAG腔外倍频KTP脉冲绿光激光输出.当泵浦电流为120 A,重复频率为600 Hz时,获得脉冲绿光的最高输出平均功率为3.62 W,1 064 nm到532 nm的转换效率为15.3%,其脉宽为21 ns,峰值功率为300 kW, 单脉冲能量为6.01 mJ.实验结果表明:该激光器稳定性可靠,输出激光脉宽较窄、峰值功率高.%In order to achieve high reliability, narrow pulse width and high peak power laser output, an all-solid-state electrooptical Q-switched green laser with diode side pump was designed with the side-pumped and electrooptical Q-switched technology. The stable laser output of LD side-pumped Nd: YAG pulse green laser with extra-cavity frequency-doubled KTP was achieved by the simple and compact flat-flat cavity design. When the pump current is 120 A and repetition rate is 600 Hz, the highest pulse green output average power of 3.62 W, the conversion efficiency (from 1064 nm to 532 nm) of 15.3%, the pulse width of 21 ns, peak power of 300 kW, and single pulse energy of 6.01 mJ were achieved. Experimental results show that the stability of laser output is high, pulse width is relatively narrow, and peak power is high.