[1] Thielen P A, Ho J G, Burchman D A. Two-dimensional diffractive coherent combining of 15 fiber amplifiers into a 600 W beam[J]. Optics Letters, 37, 3741-3743(2012).
[2] Bochove E J. Theory of spectral beam combining of fiber lasers[J]. IEEE Journal of Quantum Electronics, 38, 432-445(2002).
[3] McNaught S J, Thielen P A, Adams L N. Scalable coherent combining of kilowatt fiber amplifiers into a 2.4-kW beam[J]. IEEE Journal of Selected Topics in Quantum Electronics, 20, 0901008(2014).
[4] Fles A, Dajani I, Holten R, et al. Multikilowatt diffractive coherent combining of pseudommodulated fiber amplifiers[J]. Optical Engineering, 2016, 55: 096101.
[5] Liu Z J, Ma P G, Su R T. High-power coherent beam polarization combination of fiber lasers: progress and prospect[J]. Journal of the Optical Society of America B, 34, A7-14(2017).
[6] Honea E, Afzal R S, SavageLeuchs M, et al. Advances in fiber laser spectral beam combining f power scaling[C]Proc of SPIE. 2016: 97300Y.
[7] Madasamy P, Jander D R, Brooks C D. Dual-grating spectral beam combination of high-power fiber lasers[J]. IEEE Journal of Selected Topics in Quantum Electronics, 15, 337-343(2009).
[8] Wirth C, Schmidt O, Tsybin I. High average power spectral beam combining of four fiber amplifiers to 8.2 kW[J]. Optics Letters, 36, 3118-3120(2011).
[9] Andrusyak O, Smirnov V, Venus G. Spectral combining and coherent coupling of lasers by volume Bragg gratings[J]. IEEE Journal of Selected Topics in Quantum Electronics, 15, 344-353(2009).
[10] Loftus T H, Thomas A M, Hoffman P R. Spectrally beam-combined fiber lasers for high-average-power applications[J]. IEEE Journal of Selected Topics in Quantum Electronics, 13, 487-497(2007).
[13] Südmeyer T, Kränkel C, Baer C R E. High-power ultrafast thin disk laser oscillators and their potential for sub-100-femtosecond pulse generation[J]. Applied Physics B: Lasers and Optics, 97, 281-295(2009).
[14] Wang Dan, Du Yinglei, Wu Yingchen. 20 kW class high-beam-quality CW laser amplifier chain based on a Yb:YAG slab at room temperature[J]. Optics Letters, 43, 3838-3841(2018).
[15] Guo Yangding, Peng Qinjun, Bo Yong. 24.6 kW near diffraction limit quasi-continuous-wave Nd: YAG slab laser based on a stable–unstable hybrid cavity[J]. Optics Letters, 45, 1136-1139(2020).
[16] Dong Jun, Michael B, Mao Yanli. Dependence of the Yb3+ emission cross section and lifetime on temperature and concentration in yttrium aluminum garnet[J]. Journal of the Optical Society of America B, 20, 1975-1979(2003).
[18] Daneu V, Sanchez A, Fan e T Y. Spectral beam combining of a broad-stripe diode laser array in an external cavity[J]. Optics Letters, 25, 405-407(2000).
[19] Huang R K, Chann B, Burgess J, et al. Direct diode lasers with comparable beam quality to fiber, CO2, solid state lasers[C]Proc of SPIE. 2012: 824102.
[20] Hecht J. Beam combining cranks up the power[J]. Laser Focus World, 48, 50-53(2012).
[21] Xiao Y, Brunet F, Kanskar M. 1-kilowatt CW all-fiber laser oscillator pumped with wavelength-beam-combined diode stacks[J]. Optics Express, 20, 3296-3301(2012).
