基于Nd:GdVO_4晶体的自锁模皮秒涡旋光  

Self-Mode-Locked Picosecond Vortex Beams Based on Nd:GdVO_4 Crystal

作　　者：李剑伟[1] 郑义[1] 李祚涵 高亦飞[1] 李庆玲[1] Li Jianwei;Zheng Yi;Li Zuohan;Gao Yifei;Li Qingling(Institute of Laser, School of Science, Beijing Jiaotong University, Beijing 100044, China)

机构地区：[1]北京交通大学理学院激光研究所,北京100044

出　　处：《激光与光电子学进展》2018年第2期329-334,共6页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(61527822);中央高校基本科研基金(S16JB00010)

摘　　要：基于Nd:GdVO_4晶体研究了自锁模拉盖尔-高斯(LG)涡旋光束。通过不断调节谐振腔内的损耗实现厄米-高斯(HG_(00)和HG_(02))模式稳定的皮秒自锁模激光输出。模式转换器可将HG_(02)模式转换为LG_(02)模式稳定的皮秒自锁模涡旋脉冲,锁模脉冲频率为1.35 GHz。LG_(00)和LG_(02)模式锁模脉冲的平均输出功率分别为484 mW和371 mW,斜效率分别为30.3%和19.3%。Self-mode-locked Laguerre-Gaussian （LG） vortex beams are studied based on Nd： GdVO4 crystals. The stable picosecond self-mode-locked laser with Hermite-Gaussian （HG00 and HG02 ） modes can be obtained through the continuous adjustment for cavity loss. The stable picosecond self-mode-locked vortex pulse can be converted from HG02 mode to LG02 mode with a mode converter. The frequency of mode-locked pulse is 1.35 GHz. The average output powers of LGoo and LG02 modes are 484 mW and 371 mW respectively, and the slope efficiencies are 30.3% and 19.3% respectively.

关 键 词：激光光学 自锁模 皮秒 涡旋光束 柱面镜 

分 类 号：TN248[电子电信—物理电子学]