[1] Zellmer H,Willamowski U,Tunnermann A,et al. High-power CW neodymium-doped fiber laser operating at 9.2 W with high beam quality. Opt Lett, 1995,20(6): 578 ~580
[2] Auerbach M, Wandt D, Fallnich C, et al. High power tunable narrow line width ytterbium-doped double-clad fiber laser.Opt Common, 2001,195(5 ~6) : 437 ~441
[4] Salhi M, Hideur A, Chartier T, et al. Evidence of brillouin scattering in an ytterbium-doped double-clad fiber laser. Opt Lett, 2002,27(15): 294 ~297
[6] Hideur A, Chartier T, Brunel M, et al. Generation of high energy femtosecond pulses from a side-pumped Yb-doped double-clad fiber laser. Appl Phys Lett, 2001,79(21): 3389~ 3391
[7] Chen Z J, Grudinin A B, Porta P, et al. Enhanced Q switahing in double-clad fiber lasers. Opt Lett, 1998,23(6): 454 ~ 456
[8] Chernikov S V, Zhu Y, Taylor J R, et al. Supercontinuum self-Q-switched ytterbium fiber laser. Opt Lett, 1997,22 (5):298 ~ 300
[9] Alexander L. Gaeta and Robert W. Boyd. Stimulated brillouin scattering in the presence of external feedback.Intenational Journal of Nonlinear Optics Physics, 1992, 1(3) :581 ~594
[10] Agrawal G P. Nonlinear Fiber Optics, Second Edition (Academic,Boston, Mass.) 1995, Chap. 8
[11] Sanchez F, Boudec P Le, Francois P Luc. Effects of ion pairs on the dynamics of erbium-doped fiber lasers. Phys Rev A, 1993,48 (3): 2220 ~ 2228