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窄脉宽LD泵浦全固态绿光激光器的实验研究
引用本文:王暖让,王灿召,苑利钢,杨苏辉,赵长明.窄脉宽LD泵浦全固态绿光激光器的实验研究[J].光学技术,2007,33(1):83-85,88.
作者姓名:王暖让  王灿召  苑利钢  杨苏辉  赵长明
作者单位:1. 北京理工大学,光电工程系,北京,100081
2. 华北光电技术研究所,北京,100015
摘    要:研究了绿光平均功率达84W的高稳定声光调Q全固态激光器。通过理论分析和试验研究,针对KTP热效应以及Nd∶YAG棒的热致双折射效应,设计并优化了谐振腔来压窄脉宽。采用35个20W的高功率LD侧面抽运Nd∶YAG棒和Ⅱ类相位匹配KTP晶体(24℃时相位匹配角为Φ=23.6°,θ=90°,尺寸为7mm×7mm×7mm),采用双声光Q开关,高效平凹结构,实现了高功率内腔倍频激光器的稳定运转;在抽运电流25A时,获得了重复频率为10kHz,脉冲宽度优于45ns,输出功率为84W的高功率、高重频、窄脉宽绿光(532nm)输出,光_光转换效率为14.3%,不稳定度为±3%。

关 键 词:全固态绿光激光器  双声光Q开关  内腔倍频  窄脉宽
文章编号:1002-1582(2007)01-0083-03
收稿时间:2005/10/31
修稿时间:2005年10月31

Study on the narrow pulse-width diode-pumped solid-state green laser operation
WANG Nuan-rang,WANG Can-zhao,YUAN Li-gang,YANG Su-hui,ZHAO Chang-ming.Study on the narrow pulse-width diode-pumped solid-state green laser operation[J].Optical Technique,2007,33(1):83-85,88.
Authors:WANG Nuan-rang  WANG Can-zhao  YUAN Li-gang  YANG Su-hui  ZHAO Chang-ming
Abstract:A high stable 84W acousto-optic Q-switch solid-state green laser,which is pumped by thirty 20W high power laser diodes was reported. Through theoretical analysis and experimental research,the resonator was designed and optimized in order to compress pulse-width. In experiment,the double acousto-optic Q-switch was employed with single Nd∶YAG rod and a type Ⅱ phase matched KTP crystal(Φ= 23.6°,θ= 90°under the condition of 24℃ ,its size is 7 mm × 7mm × 7mm) was applied for frequency doubling. The resonator is the flat-concave type. Under the pumping current of 25A,a maximum green power of 84W was generated at 10kHz repetition rate and 45 ns pulse-width,leading to 14.3 % of optical-optical conversion efficiency and ± 3 % instability.
Keywords:all-solid-state green laser  double acousto-optic Q-switch  intracavity frequency doubling  narrow pulse-width
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