文献类型：期刊文献

中文题名：三镜直腔结构MgO∶PPLN高效连续光参量振荡器

英文题名：Efficient continuous-wave MgO∶PPLN optical parametric oscillator with three-mirror linear cavity

作者：尉鹏飞[1,2];张永昶[2];张静[2];段延敏[2];朱海永[2]

机构：[1]绍兴文理学院数理信息学院;[2]温州大学激光与光电子技术研究所

年份：2019

卷号：0

期号：1

起止页码：45

中文期刊名：光学精密工程

外文期刊名：Optics and Precision Engineering

收录：CSTPCD、、EI(收录号：20191706814901)、北大核心2017、Scopus(收录号：2-s2.0-85064461184)、CSCD2019_2020、北大核心、CSCD

基金：国家自然科学基金资助项目(No.61505147;No.11474223);浙江省公益技术应用研究计划资助项目(No.2017C34008;No.2015C34017)

语种：中文

中文关键词：光参量振荡;中红外激光;MgO∶PPLN;准相位匹配;端面抽运

外文关键词：optical parametric oscillator;mid-infrared laser;MgO∶PPLN;quasi-phase-matching;end-pump

中文摘要：为了优化MgO∶PPLN连续光参量振荡器(OPO)的输出特性,对三镜直腔结构的内腔式OPO系统进行腔结构设计,对其同时输出高效的信号光和闲频光进行研究。采用半导体激光端面抽运Nd∶YVO4晶体实现连续的1 064nm激光为基频光。对比分析了基频激光腔和OPO腔各腔镜分别采用平面镜或平凹镜的三种腔型结构的激光输出特性。基于30.5μm的极化周期和12.4W入射抽运功率时,获得了最高输出功率3.92W(信号光2.6W和闲频光1.32W),转化效率31.6%的激光输出,对应的信号光和闲频光的中心波长分别为1 549nm和3 394nm。结果表明三个腔镜均采用平凹镜时,可有效的压缩基频激光腔在MgO∶PPLN晶体上的光斑,提升基频激光的功率密度,而且基频激光腔和OPO腔的基模光斑在MgO∶PPLN晶体上更好的匹配,从而提升变频效率。

外文摘要：In order to optimize the output characteristics of continuous-wave singly resonant MgO∶PPLN optical parametric oscillations(OPO),a compact three-mirror linear cavity structure was designed for efficient signal light and idler light outputs.A diode laser end-pumped Nd∶YVO4 crystal laser at 1 064 nm was used as the fundamental laser source to derive the OPO in the cavity.Three laser cavities with cavity mirrors chosen from plane mirror or plano-concave mirror were designed for comparison.The simulation results show that the fundamental laser beam could be compressed,and the power density could be improved on the MgO∶PPLN crystal if all three cavity mirrors used the plano-concave mirror(named concave-concave-concave cavity in this paper).The frequency conversion efficiency would be improved for better mode matching between the fundamental cavity and the OPOcavity with the concave-concave-concave cavity.A total output power of 3.92 Wand conversion efficiency of 31.6% were obtained at the incident pump power of 12.4 Wand grating period of 30.5μm.A 2.6 Wlight signal with the center wavelength at 1 549 nm and 1.32 Widler light with center wavelength at 3 394 nm were achieved.