Institution:University of Ottawa

Title of Paper:Low noise Brillouin random fiber laser with random grating based resonator

Journal:Optics Letters

Summary:A novel Brillouin random fiber laser (BRFL) with the random grating-based Fabry–Perot (FP) resonator is proposed and demonstrated. Significantly enhanced random feedback from the femtosecond laser-fabricated random grating overwhelms the Rayleigh backscattering, which leads to efficient Brillouin gain for the lasing modes and reduced lasing threshold. Compared to the intensity and frequency noises of the Rayleigh feedback resonator, those of the proposed random laser are effectively suppressed due to the reduced resonating modes and mode competition resulting from the random grating-formed filters. Using the heterodyne technique, the linewidth of the coherent random lasing spike is measured to be ∼45.8  Hz.

First Author:Yanping Xu

Correspondence Author:Xiaoyi Bao

All the Authors:Song Gao,Ping Lu,Stephen Mihailov,Liang Chen

Discipline:Engineering

First-Level Discipline:Optical Engineering

Document Type:J

Volume:41

Issue:14

Page Number:3197-3200

Translation or Not:No

Date of Publication:2016-07

Included Journals:SCI

Release Time:2020-04-07