基于PPLN晶体的单频绿光激光器的研究  

Research of single-frequency green laser based on PPLN crystal

作　　者：林苗茜 许英朝 崔悦[1] 李洋洋 LIN Miaoqian;XU Yingchao;CUI Yue;LI Yangyang(School of Optoelectronics and Communication Engineering,Xiamen University of Technology,Xiamen 361024,China;Fujian Key Laboratory of Optoelectronic Technology and Devices,Xiamen University of Technology,Xiamen 361024,China)

机构地区：[1]厦门理工学院光电与通信工程学院,厦门361024 [2]厦门理工学院福建省光电技术与器件重点实验室,厦门361024

出　　处：《激光杂志》2021年第2期21-23,共3页Laser Journal

基　　金：福建省自然科学基金面上项目(No.2019J01876);福建省教育厅中青年教师教育科研项目资助省属高校专项(No.JK2017036);厦门市科技计划项目(No.3502Z20183060);厦门市科技计划重大项目(No.3502ZCQ20191002)。

摘　　要：随着激光技术的不断发展,单频激光器以其良好的单色性、高效率、窄带宽等优点广泛运用于激光测距、激光医疗、激光光谱学等领域。实现激光器单频输出的方法有很多种,采用的是短程吸收法;将PPLN晶体与Nd:YVO_(4)晶体之间间距缩短至1 mm,并做成绿光模组的形式,实现单纵模输出。当温度为28.5℃,LD泵浦抽运功率为0.8 W时,获得60 mW的单频绿光输出,光光转换率达7.1%,其线宽为120 MHz,实现了单频绿光激光器的又一突破。With the development of laser technology,single-frequency lasers are widely used in laser ranging,laser medical treatment,laser spectroscopy and other fields due to their good monochromaticity,high efficiency and narrow bandwidth.There are many ways to achieve laser single-frequency output.This article uses the short-range absorption method;shorten the distance between the PPLN crystal and the Nd:YVO_(4) crystal to 1 mm,and make it into a green module to achieve single-longitudinal mode output.When the temperature is 28.5℃and the pumping power of the LD pump is 0.8 W,the single-frequency green light output of 60 m W is obtained,the optical-to-optical conversion rate is 7.1%,and its line width is 120 MHz,realizing another single-frequency green laser.breakthrough.

关 键 词：单频 短腔法 PPLN 绿光模组 

分 类 号：TN249[电子电信—物理电子学]