Generation of picosecond vortex beam in a self-mode-locked Nd:YVO4 laser  

作　　者：李祚涵 彭继迎 李庆玲 高亦飞 李剑伟 曹秋园 

机构地区：[1]Key Laboratory of Luminescence and Optical Information,Ministry of Education of China,Institute of Laser,School of Science,Beijing Jiaotong University,Beijing 100044,China

出　　处：《Optoelectronics Letters》2017年第3期188-191,共4页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.61108021);the Fundamental Research Funds for the Central Universities(Nos.2013JBM091 and S16JB00010)

摘　　要：In this paper, a self-mode-locked Nd:YVO_4 picosecond vortex laser is demonstrated, which can operate on the different Laguerre-Gaussian(LG) modes at 1 064 nm. A π/2 mode converter is utilized to realize the picosecond vortex laser with LG mode transformed from the high-order Hermite-Gaussian(HG) mode. For the proposed laser, the mode-locked pulse repetition rate is 1.81 GHz. The average output powers of LG_(12) mode and LG_(02) mode are 1.241 W and 1.27 W, respectively, and their slope efficiencies are 23.2% and 24%, respectively.

关 键 词：locked vortex repetition converter utilized transformed mirror Laguerre decomposed operate 

分 类 号：TN248[电子电信—物理电子学]