【摘要】 报道了一个高效率连续波和调Q高重频两种运行方式的Tm,Ho:GdVO4 激光器。Tm,Ho:GdVO4 晶体尺寸4mm×4 mm×7 mm,a轴通光,液氮制冷到100 K,由发射中心波长为793 nm的光纤耦合激光二极管端面泵浦。Tm,Ho:GdVO4激光连续波输出功率4.0 W,光光转换效率26%。声光调Q条件下输出平均高功率3.9 W,脉冲重复频率10 kHz,脉冲宽度50ns。通过减小声光Q开关的开启时间,激光脉冲宽度由50 ns减小至23 ns。在10 kHz重频下,测量最大脉冲能量0.39 mJ , 峰值功率7.8 kW。更多还原

【Abstract】 CW and Q-switched operation of Tm, Ho:GdVO₄ laser is reported in this paper. The Tm,Ho:GdVO₄ crystal is cooled by liquid nitrogen and end-pumped by a laser diode of 793nm. Output power of 4.0 W and optical-to-optical efficiency of 26% is achieved at CW mode. With acousto-optically Q-switched operation, an average power 3.9 W of at a pulse-repetition rate of 10 kHz with pulse duration of 50ns is obtained. The pulse width is tunable from 23 ns to 50 ns by changing rf（radio frequency） off-time of AO Q-switch. At a pulse-repetition rate of 10 kHz, 0.39 mJ of pulse energy, and 7.8 kW of peak power were measured更多还原