Meng-Yao Cheng, Zhao-Hua Wang*, Yan-Fang Cao, Xiang-Hao Meng, Jiang-Feng Zhu, Jun-Li Wang, and Zhi-Yi Wei*, High power diode-pumped passively mode-locked Nd:YVO4 laser at repetition rate of 3.2 GHz, Chin. Phys. B, 2019, 28(5):054205