title: Repetition rate stabilization of the SBS Q-switched fiber laser by external injection.
abstract: Repetition rate fluctuation is one of the main drawbacks of the low-threshold stimulated Brillouin scattering (SBS) Q-switched fiber laser. A method to stabilize the repetition rate is proposed in this paper by injecting a square-wave modulated light. It is measured experimentally that variance of the repetition rate can be improved from ~20% to ~1% of the period. It is also found that effectiveness of the method depends on modulation frequency and duty cycle of the injection. Its working mechanism is analyzed qualitatively.
authors.affiliation: Lab of Information Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, 201800, PR China. blitheforest@yahoo.com
authors.forename: Zhengqing
authors.initials: Z
authors.lastname: Pan
authors.forename: Li
authors.initials: L
authors.lastname: Meng
authors.forename: Qing
authors.initials: Q
authors.lastname: Ye
authors.forename: Haiwen
authors.initials: H
authors.lastname: Cai
authors.forename: Zujie
authors.initials: Z
authors.lastname: Fang
authors.forename: Ronghui
authors.initials: R
authors.lastname: Qu