[1] Lorek E, Larsen E W, Heyl C M et al. High-order harmonic generation using a high-repetition-rate turnkey laser[J]. The Review of Scientific Instruments, 85, 123106(2014).

[2] Krebs M, Hädrich S, Demmler S et al. Towards isolated attosecond pulses at megahertz repetition rates[J]. Nature Photonics, 7, 555-559(2013).

[3] Buldt J, Mueller M, Stark H et al. Fiber laser-driven gas plasma-based generation of THz radiation with 50-mW average power[J]. Applied Physics B, 126, 2(2020).

[4] Bergner K, Müller M, Klas R et al. Scaling ultrashort laser pulse induced glass modifications for cleaving applications[J]. Applied Optics, 57, 5941-5947(2018).

[5] Wei Z J, Gao X Z, Meng X Y et al. High harmonic extreme ultraviolet light source with high repetition rate and power[J]. Chinese Journal of Laser, 51, 0701001(2024).

[6] Liang J T, Zhou Y M, Liao Y J et al. Direct visualization of deforming atomic wavefunction in ultraintense high-frequency laser pulses[J]. Ultrafast Science, 2022, 9842716(2022).

[7] Dannecker B, Negel J P, Loescher A et al. Exploiting nonlinear spectral broadening in a 400 W Yb∶YAG thin-disk multipass amplifier to achieve 2 mJ pulses with sub-150 fs duration[J]. Optics Communications, 429, 180-188(2018).

[8] Wang T, Li C, Ren B et al. High-power femtosecond laser generation from an all-fiber linearly polarized chirped pulse amplifier[J]. High Power Laser Science and Engineering, 11, e25(2023).

[9] Mason P, Divoký M, Ertel K et al. Kilowatt average power 100 J-level diode pumped solid state laser[J]. Optica, 4, 438-439(2017).

[10] Xiao H, Li R X, Wu H S et al. Research progress in tandem-pumped high-power and high-beam quality ytterbium-doped fiber laser[J]. Acta Optica Sinica, 43, 1714009(2023).

[11] Yan P, Wu Y L, Li D et al. Performance control techniques of high-power linearly polarized Yb-doped fiber lasers[J]. Acta Optica Sinica, 43, 1514001(2023).

[12] Zuo J X, Lin X C. High-power laser systems[J]. Laser & Photonics Reviews, 16, 2100741(2022).

[13] Fathi H, Närhi M, Gumenyuk R. Towards ultimate high-power scaling: coherent beam combining of fiber lasers[J]. Photonics, 8, 566(2021).

[14] Wang X L, Wen Y J, Zhang H W et al. Ytterbium-doped core-diameter-variable fiber laser: current situation and develop tendency[J]. Chinese Journal of Lasers, 49, 2100001(2022).

[15] Eidam T, Rothhardt J, Stutzki F et al. Fiber chirped-pulse amplification system emitting 3.8 GW peak power[J]. Optics Express, 19, 255-260(2011).

[16] Strickland D, Mourou G. Compression of amplified chirped optical pulses[J]. Optics Communications, 56, 219-221(1985).

[17] Krupa K, Tonello A, Shalaby B M et al. Spatial beam self-cleaning in multimode fibres[J]. Nature Photonics, 11, 237-241(2017).

[18] He W T, Peng S X, Hu F L et al. Cascaded Kerr beam self-cleaning in graded-index multimode fibers[J]. Optics & Laser Technology, 171, 110450(2024).

[19] Zhou P, Su R T, Ma Y X et al. Coherent beam combining of fiber lasers by actively phase control[J]. Acta Optica Sinica, 43, 1700001(2023).

[20] Chang H X, Jin K K, Zhang Y Q et al. Research on optical path and phase simultaneous control in coherent beam combining of broadband laser based on spectral filtering[J]. Acta Optica Sinica, 43, 1714008(2023).

[21] Yu C X, Augst S J, Redmond S M et al. Coherent combining of a 4 kW, eight-element fiber amplifier array[J]. Optics Letters, 36, 2686-2688(2011).

[22] Wang X, Leng J, Zhou P et al. 1.8-kW simultaneous spectral and coherent combining of three-tone nine-channel all-fiber amplifier array[J]. Applied Physics B, 107, 785-790(2012).

[23] Su R T, Zhou P, Ma Y X et al. 1.2 kW average power from coherently combined single-frequency nanosecond all-fiber amplifier array[J]. Applied Physics Express, 6, 122702(2013).

[24] Daniault L, Hanna M, Lombard L et al. Coherent combining of two femtosecond fiber chirped pulse amplifiers[J]. Optics Letters, 36, 621-624(2011).

[25] Siiman L A, Chang W Z, Zhou T et al. Coherent femtosecond pulse combining of multiple parallel chirped pulse fiber amplifiers[J]. Optics Express, 20, 18097-18116(2012).

[26] Müller M, Kienel M, Klenke A et al. 1 kW 1 mJ eight-channel ultrafast fiber laser[J]. Optics Letters, 41, 3439-3442(2016).

[27] Stark H, Buldt J, Müller M et al. 1 kW, 10 mJ, 120 fs coherently combined fiber CPA laser system[J]. Optics Letters, 46, 969-972(2021).

[28] Stark H, Benner M, Buldt J et al. Pulses of 32 mJ and 158 fs at 20-kHz repetition rate from a spatiotemporally combined fiber laser system[J]. Optics Letters, 48, 3007-3010(2023).

[29] Peng S X, Wang Z H, Hu F L et al. 260 fs, 403 W coherently combined fiber laser with precise high-order dispersion management[J]. Frontiers of Optoelectronics, 17, 3(2024).

[30] Gao G, Zhang H T, Deng D C et al. Gain effect and amplification characteristics analysis in fiber chirped pulse amplification systems[J]. Journal of Optics, 20, 075501(2018).

[31] Hansch T W, Couillaud B. Laser frequency stabilization by polarization spectroscopy of a reflecting reference cavity[J]. Optics Communications, 35, 441-444(1980).