| 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:YVO4 laser[J].Optoelectronics Letters,2017,13(3):188-191 |
| Generation of picosecond vortex beam in a self-mode-locked Nd:YVO4 laser |
| Author Name | Affiliation | | LI Zuo-han | Key Laboratory of Luminescence and Optical Information, Ministry of Education of China, Institute of Laser, School of Science, Beijing Jiaotong University, Beijing 100044, China | | PENG Ji-ying | Key Laboratory of Luminescence and Optical Information, Ministry of Education of China, Institute of Laser, School of Science, Beijing Jiaotong University, Beijing 100044, China | | LI Qing-ling | Key Laboratory of Luminescence and Optical Information, Ministry of Education of China, Institute of Laser, School of Science, Beijing Jiaotong University, Beijing 100044, China | | GAO Yi-Fei | Key Laboratory of Luminescence and Optical Information, Ministry of Education of China, Institute of Laser, School of Science, Beijing Jiaotong University, Beijing 100044, China | | LI Jian-wei | Key Laboratory of Luminescence and Optical Information, Ministry of Education of China, Institute of Laser, School of Science, Beijing Jiaotong University, Beijing 100044, China | | CAO Qiu-yuan | 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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| 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. This work has been supported by the National Natural Science Foundation of China (No.61108021), and the Fundamental Research Funds for the Central Universities (Nos. 2013JBM091 and S16JB00010). E-mail:pengjiying@163.com |
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