title: Harmonic mode locking with reduced carrier-envelope phase noise in ytterbium-doped fiber laser.
abstract: We experimentally explored the influence of passive harmonic mode locking on the temporal and spectral features of a ytterbium-doped fiber laser. Similar dependences of free-running linewidth of the laser carrier-envelope offset frequency (f0) on the intracavity net dispersion were observed for the fundamental-, second-, and third-order mode-locking states. Due to the reduction of nonlinear effects and supermode phase locking that balanced the third-order dispersion in the fiber cavity, the third-order harmonic mode-locking exhibited the narrowest free-running f0 linewidth of ~120 kHz in the near-zero net dispersion regime.
authors.affiliation: State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China.
authors.forename: Ming
authors.initials: M
authors.lastname: Yan
authors.forename: Wenxue
authors.initials: W
authors.lastname: Li
authors.forename: Kangwen
authors.initials: K
authors.lastname: Yang
authors.forename: Dongbi
authors.initials: D
authors.lastname: Bai
authors.forename: Jian
authors.initials: J
authors.lastname: Zhao
authors.forename: Xuling
authors.initials: X
authors.lastname: Shen
authors.forename: Qitian
authors.initials: Q
authors.lastname: Ru
authors.forename: Heping
authors.initials: H
authors.lastname: Zeng