[1] Dawson J W,Messerly M J,Beach R J,et al.Analysis of the scalability of diffraction-limited fiber lasers and amplifiers to high average power[J].Opt Express, 2008,16:13240-13266.

[2] Ke W W,Wang X J,Bao X F,et al.Thermally induced mode distortion and its limit to power scaling of fiber lasers[J].Opt Express,2013,21:14272-14281.

[3] Goodno G D,McNaught S J,Rothenberg J E,et al.Active phase and polarization locking of a 1.4 kW fiber amplifier[J].Opt Lett,2010,35:1542-1544.

[4] Weiss S B,Weber M E,Goodno G D.Group delay locking of coherently combined broadband lasers[J].Opt Lett,2012,37:455-457.

[5] Loftus T H,Thomas A M,Hoffman P R,et al.Spectrally beam-combined fiber lasers for high-average-power applications[J].IEEE Jel Top Quantum Electron,2007,13:487-497.

[6] Madasamy P,Jander D R,Brooks C D,et al.Dual-grating spectral beam combination of high-power fiber lasers[J].IEEE J Sel Top Quantum Electron,2009,15:337-343.

[7] 杜文博,王小林,朱家健,等.光纤放大器受激布里渊散射效应抑制[J].强激光与粒子束,2013,25(3):598-602(Du Wenbo,Wang Xiaolin,Zhu Jiajian,et al.Suppression of stimulated Brillouin scattering effect in fiber amplifier.High Power Laser and Particle Beams,2013,25(3):598-602)

[8] Yu Hongbo,Kliner A V,Liao K H,et al.1.2 kW single-mode fiber laser based on 100 W high-brightness pump diodes[C]//Proc of SPIE.2012:82370G.

[9] Khitrov V,Farley K,Leveille R,et al.kW level narrow linewidth Yb fiber amplifiers for beam combining[C]//Proc of SPIE.2010:76860A.

[10] Engin D,Lu Wei,Akbulut M,et al.1 kW CW Yb-fiber-amplifier with ＜0.5 GHz linewidth and near-diffraction limited beam-quality,for coherent combining application[C]// Proc of SPIE.2011:791407.

[11] Wirth C,Schmidt O,Tsybin I,et al.High average power spectral beam combining of four fiber amplifiers to 8.2 kW[J].Opt Lett,2011,36:3118-3120.

[12] Schmidt O,Rekas M,Wirth C,et al.High power narrow-band fiber-based ASE source[J].Opt Express,2011,19(5):4421-4427.

[13] Pulford B,Dajani I,Robin C.Near diffraction-limited,811 W,single-frequency photonic crystal fiber amplifier[C]//Conference on Laser and Electro-Optics.2014.

[14] Tao Rumao,Ma Pengfei,Wang Xiaolin,et al.1.4 kW all-fiber narrow-linewidth polarization-maintained fiber amplifier[C]//Proc of SPIE.2015:92550B.

[15] 张利明,周寿桓,赵鸿,等.780 W全光纤窄线宽光纤激光器[J].物理学报,2014,63:134205(Zhang Liming,Zhou Shouhuan,Zhao Hong,et al.780 W narrow linewidth all fiber laser.Acta Physica Sinica,2014,63:134205)

[16] Govind P A.Nonlinear fiber optics[M].4th ed.New York:Academic Press,2006.