title: Passive mode-locking of fiber ring laser at the 337th harmonic using gigahertz acoustic core resonances.
abstract: We report the experimental demonstration of a passively mode-locked Er-doped fiber ring laser operating at the 337th harmonic (1.80 GHz) of the cavity. The laser makes use of highly efficient Raman-like optoacoustic interactions between the guided light and gigahertz acoustic resonances trapped in the micron-sized solid glass core of a photonic crystal fiber. At sufficient pump power levels the laser output locks to a repetition rate corresponding to the acoustic frequency. A stable optical pulse train with a side-mode suppression ratio higher than 45 dB was obtained at low pump powers (~60 mW).
authors: Max Planck Institute for the Science of Light, University of Erlangen-Nuremberg, Guenther-Scharowsky-Str. 1, 91058 Erlangen, Germany. mskang@kaist.ac.kr
authors: M S
authors: MS
authors: Kang
authors: N Y
authors: NY
authors: Joly
authors: P St J
authors: PS
authors: Russell