title: 589 nm laser generation by frequency doubling of a single-frequency Raman fiber amplifier in PPSLT.
abstract: A high-power single-frequency 1178 nm continuous-wave laser is generated in a two-stage stimulated-Brillouin-scattering-suppressed all-polarization-maintaining Raman fiber amplifier pumped by 1120 nm fiber lasers. A polarization-extinction-ratio of 30 dB is achieved due to the all-polarization-maintaining configuration and the polarization dependence gain of Raman scattering. Single-pass frequency doubling with a homemade periodically poled near-stoichiometric LiTaO(3) crystal (PPSLT) produces an up to 7 W narrow-linewidth laser at 589 nm. The thermally induced dephasing effect is found to be the key issue for improving second-harmonic efficiency.
authors.affiliation: Shanghai Key Laboratory of Solid State Laser and Application, and Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.forename: Ye
authors.initials: Y
authors.lastname: Yuan
authors.forename: Yanhua
authors.initials: Y
authors.lastname: Liu
authors.forename: Jianhua
authors.initials: J
authors.lastname: Wang
authors.forename: Jinmeng
authors.initials: J
authors.lastname: Hu
authors.forename: Xinjie
authors.initials: X
authors.lastname: Lu
authors.forename: Yan
authors.initials: Y
authors.lastname: Feng
authors.forename: Shining
authors.initials: S
authors.lastname: Zhu