title: Efficient femtosecond pulse generation in an all-normal-dispersion Yb:fiber ring laser at 605 MHz repetition rate.
abstract: We report a 1030 nm-wavelength Yb:fiber laser that produces the shortest/direct output pulse duration (502 fs) among all-normal-dispersion fiber lasers at the highest repetition rate (605 MHz) among the passively fundamentally mode-locked fiber lasers. The laser also exhibits an optical efficiency of 70% at CW and 65% at mode-locking modes.
authors.affiliation: Institute of Quantum Electronics, State Key Laboratory of Advanced Optical Communication System and Networks, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China.
authors.forename: Hongyu
authors.initials: H
authors.lastname: Yang
authors.forename: Aimin
authors.initials: A
authors.lastname: Wang
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Zhang