[1] 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, 36, 3118-3120(2011). http://www.ncbi.nlm.nih.gov/pubmed/21847179

[2] Drachenberg D, Divliansky I, Smirnov V et al. High-power spectral beam combining of fiber lasers with ultra high-spectral density by thermal tuning of volume Bragg gratings[C]. SPIE, 7914, 79141F(2011).

[3] Loftus T H, Thomas A M, Hoffman P R et al. Spectrally beam-combined fiber lasers for high-average-power applications[J]. IEEE Journal of Selected Topics in Quantum Electronics, 13, 487-497(2007). http://ieeexplore.ieee.org/document/4244435/

[4] Augst S J, Goyal A K, Aggarwal R L et al. Wavelength beam combining of ytterbium fiber lasers[J]. Optics Letters, 28, 331-333(2003).

[5] Wang J P, Jin Y X, Shao J D et al. Optimization design of an ultrabroadband, high-efficiency, all-dielectric grating[J]. Optics Letters, 35, 187-189(2010). http://www.opticsinfobase.org/abstract.cfm?URI=ol-35-2-187

[6] Zhu Z D, Gou L, Jiang M H et al. High beam quality in two directions and high efficiency output of a diode laser array by spectral-beam-combining[J]. Optics Express, 22, 17804-17809(2014). http://www.opticsinfobase.org/abstract.cfm?uri=oe-22-15-17804

[7] Zhang J, Peng H Y, Fu X H et al. CW 50 W/M2=10.9 diode laser source by spectral beam combining based on a transmission grating [J]. Optics Express, 21, 3627-3632(2013). http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-21-3-3627

[8] Yang L, Wu Z, Zhang B. Influence of thermal deformation of a multilayer dielectric grating on a spectrally combined beam[J]. Applied Optics, 55, 9091-9100(2016). http://www.ncbi.nlm.nih.gov/pubmed/27857294

[9] Liu A P, Mead R, Vatter T et al. Spectral beam combining of high-power fiber lasers[C]. SPIE, 5335, 81-88(2004).

[10] Loftus T H, Liu A P, Hoffman P R et al. 522 W average power, spectrally beam-combined fiber laser with near-diffraction-limited beam quality[J]. Optics Letters, 32, 349-351(2007). http://www.ncbi.nlm.nih.gov/pubmed/17356649

[11] Li L X, Liu Q, Chen J M et al. Polarization-independent broadband dielectric bilayer gratings for spectral beam combining system[J]. Optics Communications, 385, 97-103(2017). http://www.sciencedirect.com/science/article/pii/S0030401816309269