[1] [1] V. Gapontsev,W. Krupke. Fiber lasers grow in power [J]. Laser Focus World,2002,8:83-89

[2] [2] V. P. Gapontsev,N. S. Platonov,O. Shkurihin et al.. 400 W low-noise single-mode cw ytterbium fiber laser with an integrated fiber delivery [P]. CLEO 2003,Baltimore,USA,paper CThPDB9

[3] [3] A. Galvanauskas,High power fiber lasers [J]. Opt. Photon. News,2004,15(7):42-47

[4] [4] Xue Yuhao,Zhou Jun,Lei Siyuan et al.. The research development of fiber-based high average power ultrashort pulse amplification [J]. Laser & Optoelectronics Progress,2008,45(11):28-34

[5] [5] M. Faucher,B. Sevigny,R. Perreault et al.. All-fiber 32×1 pump combiner with high isolation for high power fiber laser [P]. OSA / CLEO/QELS 2008,CMA5

[6] [6] Ping Yan,Shupeng Yin,Mali Gong. 175-W continuous-wave master oscillator power amplifier structure ytterbium-doped all-fiber laser [J]. Chin. Opt. Lett.,2008,6(8):580-582

[7] [7] Wang Yuanxiang,Jiang Peipei,Yang Dingzhong et al.. All-fiberized master oscillator power amplifier structured pulsed Yb fiber laser [J]. Chinese J. Lasers,2009,36(7):1861-1865

[8] [8] Xin Guofeng,Qu Ronghui,Fang Zujie et al.. New development of high power semiconductor laser [J]. Laser & Optoelectronics Progress,2006,43(2):3-8

[9] [9] V. Gapontsev,N. Moshegov,P. Trubenko,A. High-brightness fiber coupled pumps [C]. SPIE,2009,7198:7198O1

[10] [10] V. Gapontsev,I. Berishev,V. Chuyanov et al.. 8××-10×× nm highly efficient single emitter pumps [C]. SPIE,2008,6876:687601

[11] [11] P. Yalamanchili,V. Rossin,J. Skidmore et al.. High-power,high-efficiency fiber-coupled multimode laser-diode pump module (9×× nm) with high-reliability [C]. SPIE,2008,6876:687612-1

[12] [12] Feng Yutong,Du Songtao,Yang Yan et al.. All-fiber laser based on LD pulse-modulated MOPA architecture [J]. Chinese J. Lasers,2009,36(8):1932-1936

[13] [13] He Guangyu,Jiang Jiuxing,Liu Peng. Theory of losses in bending of multi-mode fibers [J]. Journal of Harbin University of Science & Technology,1997,2(5):91-96

[14] [14] Liu Yexin,Yang Xiaoyun,Chen Xueqin et al.. Analysis of multimode fiber bending loss [J]. Acta Scientiarum Naturalium Universitatis Sunyatseni,2002,141(15):25-27