摘要
单纵模激光器具有输出光束质量好、光谱线宽窄、频率稳定、结构紧凑等优点,在相干光通信、激光雷达、非线性光学、引力波探测和高精度光谱测量等领域有广泛的应用。本研究基于短腔方案,结合标准具选模方法,设计了腔长为90 mm的激光二极管单端泵浦单纵模声光调Q Nd:YVO_(4)激光器。通过对腔内纵模模式进行理论分析,选择插入一个厚度为5 mm、反射率为90%的法布里-珀罗标准具,实现了重复频率1 Hz~10 Hz可调、脉冲宽度为10 ns、单脉冲能量为133μJ、能量不稳定性为3.39%的单纵模激光输出。通过对输出的单纵模激光进行两级放大,获得了40 mJ的单脉冲能量输出。
Single-longitudinal-mode(SLM)lasers,characterized by their superior output laser beam quality,narrow linewidth,stable frequency,and compact size,find extensive applications in coherent optical communication,lidar,nonlinear optics,gravitational wave detection,and high-precision spectral measurement.A short cavity scheme in conjunction with Fabry-Perot etalon mode selection was employed,and a theoretical analysis of the longitudinal mode within the cavity was carried out.A laser diode single end-pumped acoustooptic Q-switched Nd:YVO_(4) laser with a cavity length of 90 mm was involved,into which a 5 mm thick Fabry-Perot etalon with a reflectivity of 90%was inserted.A SLM laser output was realized with an adjustable repetition frequency of 1 Hz~10 Hz,a pulse duration of 10 ns,a single pulse energy of 133μJ,and an energy instability of 3.39%.The output SLM laser was further amplified by two stages,and a single-pulse energy output of 40 mJ was obtained.
作者
李银栋
陈义夫
孙佳宁
满朝阳
安嘉硕
颜秉政
白振旭
吕志伟
王雨雷
LI Yindong;CHEN Yifu;SUN Jianing;MAN Zhaoyang;AN Jiashuo;YAN Bingzheng;BAI Zhenxu;LYU Zhiwei;WANG Yulei(Center for Advanced Laser Technology,Hebei University of Technology,Tianjin 300401,China;Hebei Key Laboratory of Advanced Laser Technology and Equipment,Tianjin 300401,China)
出处
《应用光学》
CAS
北大核心
2024年第6期1307-1313,共7页
Journal of Applied Optics
基金
国家自然科学基金(62075056,61927815)
天津市自然科学基金(20JCZDJC00430,22JCYBJC01100)
河北省自然科学基金(F2023202063)。
关键词
激光技术
单纵模
法布里-珀罗标准具
短腔
声光调Q
laser technology
single-longitudinal-mode
Fabry-Perot etalon
short cavity
acoustic-optical Qswitched
