高脉冲重复频率调Q Tm,Ho:GdVO_4激光器(英文)  

Q-switched Tm, Ho:GdVO_4 laser with high pulse repetition frequency

作　　者：姚宝权[1] 鞠有伦[1] 王月珠[1] 贺万骏[1] 

机构地区：[1]哈尔滨工业大学可调谐激光技术国家重点实验室,黑龙江哈尔滨150001

出　　处：《强激光与粒子束》2005年第B04期29-32,共4页High Power Laser and Particle Beams

基　　金：Supported by the Scientific Research Foundation of Harbin Institute of Technolog(HIT200214)

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。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 trequency） 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.

关 键 词：激光二极管 端面泵浦 声光调Q Tm Ho GdVO4 

分 类 号：TN248[电子电信—物理电子学]