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

• 来源期刊: 光电子快报（英文版）
• 年，卷（期）: 2017,（3）
• 页码范围: 188-191
• 页数: 4页
• 语种: 英文
• DOI: 10.1007/s11801-017-7009-6

摘要

In this paper,a self-mode-locked Nd:YVO4 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 LG12 mode and LG02 mode are 1.241 W and 1.27 W,respectively,and their slope efficiencies are 23.2％ and 24％,respectively.