| LD光纤耦合端面泵浦Nd:YVO4/Cr4+:YAG激光器 |
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| 引用本文： | 柳强,巩马理,闫平,贾维溥,崔瑞祯,王东生.LD光纤耦合端面泵浦Nd:YVO4/Cr4+:YAG激光器[J].激光技术,2002,26(6):401-402. |
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| 作者姓名： | 柳强 巩马理 闫平 贾维溥 崔瑞祯 王东生 |
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| 作者单位： | 1.清华大学精密仪器与机械学系, 北京, 100084 |
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| 摘 要： | 根据Siegman的被动调Q判据,Nd:YVO4晶体由于受激发射截面大、上能级寿命短,很难获得被动调Q输出。利用LD光纤耦合端面泵浦Nd:YVO4晶体,在泵浦功率3.5W时,连续运转获得最大输出1.4W,相应的光光转换效率为40%,同时采用Cr4+:YAG可饱和吸收体,成功地实现了Nd:YVO4被动调Q运转,获得了脉宽11.7ns,重复频率22kHz调Q输出。
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| 关 键 词： | 被动调Q Cr4+:YAG 端面泵浦 |
| 文章编号： | 1001-3806(2002)06-0401-02 |
| 收稿时间： | 2002/3/26 |
| 修稿时间： | 2002年3月26日 |
Passive Q-switched Nd∶YVO4/Cr4+∶YAG lasers pumped by a fiber coupled laser diode |
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| Liu Qiang,Gong Mali,Yan Ping,Jia Weipu,Cui Ruizhen,Wang Dongsheng.Passive Q-switched Nd∶YVO4/Cr4+∶YAG lasers pumped by a fiber coupled laser diode[J].Laser Technology,2002,26(6):401-402. |
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| Authors: | Liu Qiang Gong Mali Yan Ping Jia Weipu Cui Ruizhen Wang Dongsheng |
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| Abstract: | On the basis of Siegman's criterion for good passive Q-switched,it is difficult to operate a diode-pumped,passive Q-switched Nd:YVO4 laser with Cr4+:YAG as the saturable absorber.The main difficulties arise from the fact that a Nd:YVO4 crystal has a high stimulated emission cross section.With a fiber coupled laser diode end pumping Nd:YVO4 laser,1.4W of CW output power has obtained under a pump level of 3.5W with optical conversion efficiency of 40%.The Q-switching operation of Nd:YVO4 laser with Cr4+:YAG as the saturable absorber was demonstrated.Q-switched pulses duration is 11.7ns with pulse repetition rate of 22kHz. |
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