[1] WANG Sh Y,LIN D Y,WANG Ch.Recent progress of fiber[J].Laser Technology,2005,29(6):657-661(in Chinese).
[2] XIAO R,HOU J,JIANG Ch F.Coherent combining of fiber lasers[J].Laser Technology,2005,29(5):516-518(in Chinese).
[3] LI Y Zh,QIAN L J,LU D Q,et al.Coherent and incoherent combining of fiber array with hexagonal ring distribution[J].Optics & Laser Technology,2007,39(5):957-963.
[4] GAPONTSEV V,GAPONTSEV D,PLATONOV N,et al.2kW CW ytterbium fiber laser with record diffraction-limited brightness[C]//Conference on Lasers and Electro-Optics Europe.Munich:IEEE,2005:508-510.
[5] CHENG Zh L,HOU J,JIANG Ch F.Theoretical study on thermal effect in Yb-doped double-clad high power fiber laser[J].Laser Technology,2007,31(5):544-547(in Chinese).
[6] LIAO Y B.Fiber optics[M].Beijing:Tsinghua University Press,2000:153-158(in Chinese).
[7] HILL C A,HALL D R.Coupling loss theory of single-mode waveguide resonators[J].Appl Opt,1985,24(9):1283-1290.
[8] FU Y Q,FENG G Y,ZHANG D Y,et al.M2 factor of linear polarization modes in a step-index fiber[J].Acta Photonica Sinica,2008,37(7):1342-1345(in Chinese).
[9] XIAO R,ZHOU P,HOU J,et al.Effect of partial coherence of laser has on the irradiance distribution of coherent combining of fiber laser arrays in far field[J].Acta Physica Sinica,2007,56(2):819-823(in Chinese).