title: Incoherently pumped high-power linearly-polarized single-mode random fiber laser: experimental investigations and theoretical prospects.
abstract: We present a hundred-watt-level linearly-polarized random fiber laser (RFL) pumped by incoherent broadband amplified spontaneous emission (ASE) source and prospect the power scaling potential theoretically. The RFL employs half-opened cavity structure which is composed by a section of 330 m polarization maintained (PM) passive fiber and two PM high reflectivity fiber Bragg gratings. The 2nd order Stokes light centered at 1178 nm reaches the pump limited maximal power of 100.7 W with a full width at half-maximum linewidth of 2.58 nm and polarization extinction ratio of 23.5 dB. The corresponding ultimate quantum efficiency of pump to 2nd order Stokes light is 86.43%. To the best of our knowledge, this is the first demonstration of linearly-polarized high-order RFL with hundred-watt output power. Furthermore, the theoretical investigation indicates that 300 W-level linearly-polarized single-mode 1st order Stokes light can be obtained from incoherently pumped RFL with 100 m PM passive fiber.
authors.forename: Jiangming
authors.initials: J
authors.lastname: Xu
authors.forename: Zhaokai
authors.initials: Z
authors.lastname: Lou
authors.forename: Jun
authors.initials: J
authors.lastname: Ye
authors.forename: Jian
authors.initials: J
authors.lastname: Wu
authors.forename: Jinyong
authors.initials: J
authors.lastname: Leng
authors.forename: Hu
authors.initials: H
authors.lastname: Xiao
authors.forename: Hanwei
authors.initials: H
authors.lastname: Zhang
authors.forename: Pu
authors.initials: P
authors.lastname: Zhou