高重频1.57μm内腔光学参量振荡器

曾钦勇; 万勇; 张勍; 李彤; 牛瑞华; 朱大勇; 韩凯

红外与激光工程, 2006, 35 (6): 673, 网络出版: 2007-05-23

高重频1.57μm内腔光学参量振荡器

High-repetition-rate intracavity optical parametric oscillator at 1.57 μm

论文大纲

曾钦勇 ^1,2,*万勇 ^1,2张勍 ²李彤 ²牛瑞华 ²朱大勇 ¹韩凯 ²

作者单位

¹ 电子科技大学,光电信息学院,四川,成都,610054

² 西南技术物理研究所,四川,成都,610041

光学参量振荡器磷酸氧钛钾被动调Q 人眼安全 Optical parametric oscillator (OPO) KTiOPO4 crystal Passive Q- switch Eye-safe

摘要

理论分析了被动调Q固体激光泵浦的光参量振荡器.利用激光二极管泵浦,Cr4+:YAG被动调Q Nd:YAG激光泵浦的内腔光学参量振荡器,磷酸氧钛钾(KTP)晶体作为非线性晶体,获得了高重复频率,高峰值功率的人眼安全激光输出,改变Cr4+:YAG被动调Q晶体的参数,可获得不同重频不同脉宽的调Q激光脉冲;当Cr4+:YAG晶体初始透过率为T0=80%时,获得了平均功率大于3.8 W,重频约80 kHz的1.572 μm波长信号光输出,脉宽30 ns,脉冲峰值功率达到1.58 kW.

Abstract

The behaviour of passively Q-switched solid-state lasers containing intracavity optical parametric oscillators(OPOs) is described in detail. A diode-pumped passively Q-switched Nd:YAG, Cr4+: YAG laser was employed to generate a high-repetition-rate, high-peak-power eye-safe laser beam with an intracavity optical parametric oscillator (OPO) by use of a KTiOPO4 (KTP) crystal. Different ranges of repetition rates and pulse widths are obtained by using absorbers of different optical densities. With a Cr4+:YAG wafer of T0=80% low-intensity transmission, 3.8 W average power at 1.572 μm wavelength and repetition rate up to 80 kHz with pulse width as narrow as 30 ns are obtained. The peak power is up to 1.58 kW.

参考文献

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曾钦勇, 万勇, 张勍, 李彤, 牛瑞华, 朱大勇, 韩凯. 高重频1.57μm内腔光学参量振荡器[J]. 红外与激光工程, 2006, 35(6): 673. 曾钦勇, 万勇, 张勍, 李彤, 牛瑞华, 朱大勇, 韩凯. High-repetition-rate intracavity optical parametric oscillator at 1.57 μm[J]. Infrared and Laser Engineering, 2006, 35(6): 673.

高重频1.57μm内腔光学参量振荡器

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