光电子快报(英文版), 2017, 13 (3): 188, Published Online: Sep. 13, 2018  

Generation of picosecond vortex beam in a self-mode-locked Nd:YVO4laser

Author Affiliations
Key Laboratory of Luminescence and Optical Information, Ministry of Education of China, Institute of Laser, School of Science, Beijing Jiaotong University, Beijing 100044, China
Abstract
In this paper, a self-mode-locked Nd:YVO4picosecond 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 LG12mode and LG02mode are 1.241 W and 1.27 W, respectively, and their slope efficiencies are 23.2% and 24%, respectively.

LI Zuo-han, PENG Ji-ying, LI Qing-ling, GAO Yi-Fei, LI Jian-wei, CAO Qiu-yuan. Generation of picosecond vortex beam in a self-mode-locked Nd:YVO4laser[J]. 光电子快报(英文版), 2017, 13(3): 188.

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