title: Sub-100-as timing jitter optical pulse trains from mode-locked Er-fiber lasers.
abstract: We demonstrate sub-100-as timing jitter optical pulse trains generated from free-running, 77.6 MHz repetition-rate, mode-locked Er-fiber lasers. At -0.002(±0.001) ps2 net cavity dispersion, the rms timing jitter is 70 as (224 as) integrated from 10 kHz (1 kHz) to 38.8 MHz offset frequency, when measured by a 24 as resolution balanced optical cross correlator. To our knowledge, this result corresponds to the lowest rms timing jitter measured from any mode-locked fiber lasers so far. The measured result also agrees fairly well with the Namiki-Haus analytic model of quantum-limited timing jitter in stretched-pulse fiber lasers.
authors.affiliation: KAIST Institute for Optical Science and Technology and School of Mechanical, Aerospace and Systems Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea.
authors.forename: Tae Keun
authors.initials: TK
authors.lastname: Kim
authors.forename: Youjian
authors.initials: Y
authors.lastname: Song
authors.forename: Kwangyun
authors.initials: K
authors.lastname: Jung
authors.forename: Chur
authors.initials: C
authors.lastname: Kim
authors.forename: Hyoji
authors.initials: H
authors.lastname: Kim
authors.forename: Chang Hee
authors.initials: CH
authors.lastname: Nam
authors.forename: Jungwon
authors.initials: J
authors.lastname: Kim