Harmonically pump a femtosecond optical parametric oscillator to 1.13 GHz by a femtosecond 515 nm laser Song, Jiajun ; Meng, Xianghao ; Wang, Zhaohua ; Wang, Xianzhi ; Tian, Wenlong ; Zhu, Jiangfeng ; Fang, Shaobo ; Teng, Hao ; Wei, Zhiyi Abstract Publication: Chinese Optics Letters Pub Date: 2020 DOI: 10.3788/COL202018.033201 Bibcode: 2020ChOpL..18c3201S