[1] Andrusyak O, Ciapurin I, Smirnov V, et al. External and common-cavity high spectral density beam combining of high power fiber lasers[C]. SPIE, 2008, 6873: 687314.
[2] Andrusyak O, Smirnov V, Venus G, et al. Spectral combining and coherent coupling of lasers by volume Bragg gratings[J]. IEEE J Sel Top Quantum Electron, 2009, 15(2): 344-353.
[3] Ott D, Divliansky I, Anderson B, et al. Scaling the spectral beam combining channels in a multiplexed volume Bragg grating[J]. Optics Express, 2013, 21(24): 29620-29627.
[4] Drachenberg D R, Andrusyak O, Venus G, et al. Thermal tuning of volume Bragg gratings for spectral beam combining of high-power fiber lasers[J]. Applied Optics, 2014, 53(6): 1242-1246.
[5] Pu Shibing, Jiang Zongfu, Xu Xiaojun. Numerical analysis of spectral beam combining by volume Bragg grating[J]. High Power Laser and Particle Beams, 2008, 20(5): 721-724.
[7] Liang Xiaobao, Chen Liangming, Li Chao, et al. High average power spectral beam combining employing volume Bragg gratings[J]. High Power Laser and Particle Beams, 2015, 27(7): 071012.
[8] Madasamy P, Loftus T, Thomas A, et al. Comparison of spectral beam combining approaches for high power fiber laser systems[C]. SPIE, 2008, 6952: 695207.
[9] Loftus T H, Thomas A M, Hoffman P R, et al. Spectrally beam-combined fiber lasers for high-average-power applications[J]. IEEE J Sel Top Quantum Electron, 2007, 13(3): 487-497.
[10] Wirth C, Schmidt O, Tsybin I, et al. High average power spectral beam combining of four fiber amplifiers to 8.2 kW[J]. Optics Letters, 2011, 36(16): 3118-3120.
[11] Honea E, Afzal R S, Savage-Leuchs M, et al. Spectrally beam combined fiber lasers for high power, efficiency and brightness[C]. SPIE, 2012, 8547: 854706.
[12] Tian F, Yan H, Chen L, et al. Investigation on the influence of spectral linewidth broadening on beam quality in spectral beam combination[C]. SPIE, 2014, 9255: 92553N.
[13] Huang Z H, Liang X B, Li C Y, et al. Spectral broadening in high-power Yb-doped fiber lasers employing narrow-linewidth multilongitudinal-mode oscillators[J]. Applied Optics, 2016, 55(2): 297-302.