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

Zuo-han LI; Ji-ying PENG; Qing-ling LI; Yi-Fei GAO; Jian-wei LI; Qiu-yuan and CAO

doi:10.1007/s11801-017-7009-6

Journals >Optoelectronics Letters >Volume 14 >Issue 3 >Page 188 > Article

Optoelectronics Letters
Vol. 14, Issue 3, 188 (2018)

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

Zuo-han LI, Ji-ying PENG^*, Qing-ling LI, Yi-Fei GAO..., Jian-wei LI and Qiu-yuan and CAO|Show fewer author(s)

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

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DOI: 10.1007/s11801-017-7009-6 Cite this Article

LI Zuo-han, PENG Ji-ying, LI Qing-ling, GAO Yi-Fei, LI Jian-wei, and CAO Qiu-yuan. Generation of picosecond vortexbeam in a self-mode-locked Nd:YVO₄ laser[J]. Optoelectronics Letters, 2018, 14(3): 188 Copy Citation Text

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Abstract

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.

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