基于紧凑型Nd∶YAG/PPMgLN模组的561 nm基模激光器  

A 561 nm Fundamental Mode Laser Based on a Compact Nd∶YAG/PPMgLN Module

作　　者：伍秋林 冯新凯 陈怀熹[1,2,5] 陈家颖 马翠坪 梁万国 WU Qiulin;FENG Xinkai;CHEN Huaixi;CHEN Jiaying;MA Cuiping;LIANG Wanguo(Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou 350002,China;Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China,Fuzhou 350108,China;University of Chinese Academy of Sciences,Beijing 100049,China;College of Digital Economy,Fujian Agriculture and Forestry University,Fuzhou 350028,China;College of Photonic and Electronic Engineering,Fujian Normal University,Fuzhou 350117,China;College of Physical and Energy,Fujian Normal University,Fuzhou 350117,China)

机构地区：[1]中国科学院福建物质结构研究所,福州350002 [2]中国福建光电信息科学与技术创新实验室(闽都创新实验室),福州350108 [3]中国科学院大学,北京100049 [4]福建农林大学数字经济学院,福州350028 [5]福建师范大学光电与信息工程学院,福州350117 [6]福建师范大学物理与能源学院,福州350117

出　　处：《人工晶体学报》2024年第9期1512-1518,共7页Journal of Synthetic Crystals

基　　金：中国福建光电信息科学与技术创新实验室(闽都实验室)自主部署项目(2021ZZ104);合肥国家实验室量子科技仪器专项(2023YQ02002);福建农林大学安溪茶学院青年骨干培养基金项目(ACKY2023021)。

摘　　要：本文提出了一种非线性晶体的切角方法,通过切去谐振腔中掺氧化镁周期极化铌酸锂(PPMgLN)晶体输出端面的一角,改变输出端面的激光模式分布,从而实现了稳定的561 nm黄光激光的基模输出。利用有限差分本征模法,仿真出各种切角方案输出端面的激光模式分布,讨论其输出基模的原理,并通过实验测出各方案输出功率随泵浦功率的变化曲线。结果表明,当抽运功率为4.8 W时,实现了最高121 mW的基模输出,光-光转换效率为2.6%,中心波长为560.95 nm,半峰全宽为0.92 nm,3 h内波动性小于1.91%。与已报道的实验结果对比,该实验结果具有更小的结构尺寸,为紧凑型基模激光器提供重要参考。In this paper,a nonlinear crystal corner-cutting method is proposed to change the laser mode distribution on the output face of the PPMgLN crystal by cutting off a corner of the output face of the PPMgLN crystal in the resonance cavity,so as to realize the stable fundamental mode output of the 561 nm yellow laser.Using the finite-difference eigenmode method,the laser mode distributions at the output end face of various corner-cutting schemes were simulated to discuss the principle of their output fundamental mode,and the change curves of the output power of each scheme with the pump power were measured experimentally.The results show that when the pumping power is 4.8 W,the highest fundamental mode output of 121 mW is realized,with an optical-to-optical conversion efficiency of 2.6%,a central wavelength of 560.95 nm and a full width at half maximum of 0.92 nm,and an instability of less than 1.91%in 3 h.With a smaller structure size compared with the reported experimental results,this experimental result will provide an important reference for compact fundamental mode lasers.

关 键 词：PPMGLN晶体 561 nm激光器 倍频晶体切角 基模输出 

分 类 号：TN248[电子电信—物理电子学]