[1] Snitzer E. Proposed fiber cavities for optical masers[J]. Journal of Applied Physics, 32, 36-39(1961).
[2] Liu Zejin, Jin Xiaoxi, Su Rongtao, et al. Development status of high power fiber lasers and their coherent beam combination[J]. Science China Information Sciences, 62, 41301(2019).
[4] Dawson J W, Messerly M J, Beach R J, et al. Analysis of the scalability of diffraction-limited fiber lasers and amplifiers to high average power[J]. Optics Express, 16, 13240-13266(2008).
[5] Zhu Jiajian, Zhou Pu, Ma Yanxing, et al. Power scaling analysis of tandem-pumped Yb-doped fiber lasers and amplifiers[J]. Optics Express, 19, 18645-18654(2011).
[6] Khitrov V, Minelly J D, Tumminelli R, et al. 3kW singlemode direct diodepumped fiber laser[C]Proceedings of SPIE 8961, Fiber Lasers XI: Technology, Systems, Applications. 2014: 89610V.
[7] Mller F, Krmer R G, Matzdf C, et al. MultikW perfmance analysis of Ybdoped monolithic singlemode amplifier oscillat setup[C]Proceedings of SPIE 10897, Fiber Lasers XVI: Technology Systems. 2019: 108970D.
[8] Wang Y, Kitahara R, Kiyoyama W, et al. 8kW singlestage allfiber Ybdoped fiber laser with a BPP of 0.50 mmmrad[C]Proceedings of SPIE 11260, Fiber Lasers XVII: Technology Systems. 2020: 1126022.
[9] Jauregui C, Limpert J, Tünnermann A. High-power fibre lasers[J]. Nature Photonics, 7, 861-867(2013).
[10] Zervas M N, Codemard C A. High power fiber lasers: a review[J]. IEEE Journal of Selected Topics in Quantum Electronics, 20, 219-241(2014).
[11] Jauregui C, Stihler C, Limpert J. Transverse mode instability[J]. Advances in Optics and Photonics, 12, 429-484(2020).
[12] Li Chunfei. Nonlinear optics: principle applications[M]. Shanghai: Shanghai Jiao Tong University Press, 2015: 134143
[13] Wang Wenliang. Stimulated Raman scattering in high power fiber lasers[D]. Changsha: National University of Defense Technology, 2014: 163
[14] Naderi S, Dajani I, Grosek J, et al. Theoretical and numerical treatment of modal instability in high-power core and cladding-pumped Raman fiber amplifiers[J]. Optics Express, 24, 16550-16565(2016).
[15] Distler V, Möller F, Strecker M, et al. Transverse mode instability in a passive fiber induced by stimulated Raman scattering[J]. Optics Express, 28, 22819-22828(2020).
[16] Distler V, Möller F, Yildiz B, et al. Experimental analysis of Raman-induced transverse mode instability in a core-pumped Raman fiber amplifier[J]. Optics Express, 29, 16175-16181(2021).
[17] Zhang Hanwei, Xiao Hu, Wang Xiaolin, et al. Mode dynamics in high-power Yb-Raman fiber amplifier[J]. Optics Letters, 45, 3394-3397(2020).
[18] Chu Qiuhui, Shu Qiang, Chen Zeng, et al. Experimental study of mode distortion induced by stimulated Raman scattering in high-power fiber amplifiers[J]. Photonics Research, 8, 595-600(2020).
[19] Gao Wei, Fan Wenhui, Ju Pei, et al. Effective suppression of mode distortion induced by stimulated Raman scattering in high-power fiber amplifiers[J]. High Power Laser Science and Engineering, 9, e20(2021).
[20] Liu Wei, Ma Pengfei, Shi Chen, et al. Theoretical analysis of the SRS-induced mode distortion in large-mode area fiber amplifiers[J]. Optics Express, 26, 15793-15803(2018).
[21] Agrawal G P. Nonlinear fiber optics[M]. 4th ed. Oxfd: Elsevier, 2007.
[22] Dragic P D, Ballato J. Characterisation of Raman gain spectra in Yb: YAG-derived optical fibres[J]. Electronics Letters, 49, 895-896(2013).
[23] Dragic P D, Ballato J, Hawkins T. Compositional tuning of glass f the suppression of nonlinear parasitic fiber laser phenomena[C]Proceedings of SPIE 9081, Laser Technology f Defense Security X. 2014: 908109.
[24] Ballato J, Dragic P. Materials approaches to mitigating parasitic effects in optical wks: towards the perfect optical fiber[C]Proceedings of the 18th International Conference on Transparent Optical wks. 2016: 14.
[25] Ballato J, Cavillon M, Dragic P. A unified materials approach to mitigating optical nonlinearities in optical fiber. I. Thermodynamics of optical scattering[J]. International Journal of Applied Glass Science, 9, 263-277(2018).
[26] Ye Yun, Yang Baolai, Wang Peng, et al. Industrial 6 kW high-stability single-stage all-fiber laser oscillator based on conventional large mode area ytterbium-doped fiber[J]. Laser Physics, 31, 035104(2021).
[27] Mashiko Y, Nguyen H K, Kashiwagi M, et al. 2 kW singlemode fiber laser with 20m long delivery fiber high SRS suppression[C]Proceedings of SPIE 9728, Fiber Lasers XIII: Technology, Systems, Applications. 2016: 972805.
[28] Shima K, Ikoma S, Uchiyama K, et al. 5kW single stage allfiber Ybdoped singlemode fiber laser f materials processing[C]Proceedings of SPIE 10512, Fiber Lasers XV: Technology Systems. 2018: 105120C.
[30] Yang Baolai, Zhang Hanwei, Shi Chen, et al. High power monolithic tapered ytterbium-doped fiber laser oscillator[J]. Optics Express, 27, 7585-7592(2019).
[31] Ye Yun, Xi Xiaoming, Shi Chen, et al. Comparative study on transverse mode instability of fiber amplifiers based on long tapered fiber and conventional uniform fiber[J]. Laser Physics Letters, 16, 085109(2019).
[32] Tian Yuan, Chen Yizhu, Leng Jinyong, et al. Numerical modeling and optimization of cladding-pumped tapered fiber Raman amplifiers[J]. Optics Communications, 423, 6-11(2018).
[33] Zeng Lingfa, Xi Xiaoming, Ye Yun, et al. A 1.8 kW fiber laser oscillator employing a section of spindle-shaped core ytterbium-doped fiber[J]. Laser Physics Letters, 17, 095104(2020).
[35] Zeng Lingfa, Pan Zhiyong, Xi Xiaoming, et al. 5 kW monolithic fiber amplifier employing homemade spindle-shaped ytterbium-doped fiber[J]. Optics Letters, 46, 1393-1396(2021).
[36] Zenteno L A, Wang J, Walton D T, et al. Suppression of Raman gain in single-transverse-mode dual-hole-assisted fiber[J]. Optics Express, 13, 8921-8926(2005).
[37] Fini J M, Mermelstein M D, Yan M F, et al. Distributed suppression of stimulated Raman scattering in an Yb-doped filter-fiber amplifier[J]. Optics Letters, 31, 2550-2552(2006).
[38] Fini J M, Nicholson J W. Fibers design with a bendcompensated cladding f distributed wavelength filtering[C]Proceedings of SPIE 8961, Fiber Lasers XI: Technology, Systems, Applications. 2014: 89610S.
[39] Liu Rui, Yan Dapeng, Chen Ming, et al. Enhanced cladding pump absorption of ytterbium-doped double cladding fiber with internally modified cladding structures[J]. Optical Materials Express, 10, 36-45(2020).
[40] Wang Yong, Martinez-Rios A, Po H. Experimental study of stimulated Brillouin and Raman scatterings in a Q-switched cladding-pumped fiber laser[J]. Optical Fiber Technology, 10, 201-214(2004).
[41] Wang Yong, Xu Changqing, Po Hong. Analysis of Raman and thermal effects in kilowatt fiber lasers[J]. Optics Communications, 242, 487-502(2004).
[42] Wang Yong. Stimulated Raman scattering in high-power double-clad fiber lasers and power amplifiers[J]. Optical Engineering, 44, 114202(2005).
[43] Ye Yun, Xi Xiaoming, Shi Chen, et al. Experimental study of 5-kW high-stability monolithic fiber laser oscillator with or without external feedback[J]. IEEE Photonics Journal, 11, 1503508(2019).
[44] Lai P Y, Chang Chunlin, Huang S L, et al. Effective suppression of stimulated Raman scattering in high power fiber amplifiers using doublepass scheme[C]Proceedings of SPIE 8961, Fiber Lasers XI: Technology, Systems, Applications. 2014: 89612T.
[45] Zhang Tianzi, Ding Yingchun, Liu Zhongxuan, et al. An optimization of Raman effects in tempumped Ybdoped kilowatt fiber amplifiers[C]Proceedings of SPIE 9524, International Conference on Optical Photonic Engineering. 2015: 95240Y.
[47] Ye Yun, Yang Baolai, Wang Xiaolin, et al. Experimental study of SRS threshold dependence on the bandwidths of fiber Bragg gratings in co-pumped and counter-pumped fiber laser oscillator[J]. Journal of Optics, 21, 025801(2019).
[48] Schreiber T, Liem A, Freier E, et al. Analysis of stimulated Raman scattering in cw kW fiber oscillats[C]Proceedings of SPIE 8961, Fiber Lasers XI: Technology, Systems, Applications. 2014: 89611T.
[49] Liu Wei, Ma Pengfei, Lv Haibin, et al. General analysis of SRS-limited high-power fiber lasers and design strategy[J]. Optics Express, 24, 26715-26721(2016).
[50] Lin Weixuan. Stimulated Raman scattering intermodal coupling in continuouswave high power fiber lasers[D]. Montreal: McGill University, 2018.
[51] Jansen F, Nodop D, Jauregui C, et al. Suppression of stimulated Raman scattering in highpower fiber laser systems by lumped spectral filters[C]Proceedings of SPIE 7580, Fiber Lasers VII: Technology, Systems, Applications. 2010: 75802I.
[52] Nodop D, Jauregui C, Jansen F, et al. Suppression of stimulated Raman scattering employing long period gratings in double-clad fiber amplifiers[J]. Optics Letters, 35, 2982-2984(2010).
[53] Heck M, Bock V, Krmer R G, et al. Mitigation of stimulated Raman scattering in high power fiber lasers using transmission gratings[C]Proceedings of SPIE 10512, Fiber Lasers XV: Technology Systems. 2018: 105121I.
[54] Jiao Kerong, Shen Hua, Guan Zhiwen, et al. Suppressing stimulated Raman scattering in kW-level continuous-wave MOPA fiber laser based on long-period fiber gratings[J]. Optics Express, 28, 6048-6063(2020).
[55] Wang Meng, Zhang Yujing, Wang Zefeng, et al. Fabrication of chirped and tilted fiber Bragg gratings and suppression of stimulated Raman scattering in fiber amplifiers[J]. Optics Express, 25, 1529-1534(2017).
[56] Wang Meng, Hu Qihao, Liu Le, et al. Suppression of stimulated Raman scattering in a monolithic fiber laser oscillat using chirped tilted fiber Bragg gratings[C]Proceedings of SPIE 10811, HighPower Lasers Applications IX. 2018: 108110V.
[57] Wang Zefeng, Wang Meng, Hu Qihao. Filtering of stimulated Raman scattering in a monolithic fiber laser oscillator using chirped and tilted fiber Bragg gratings[J]. Laser Physics, 29, 075101(2019).
[58] Jiao Kerong, Shu Jian, Shen Hua, et al. Fabrication of kW-level chirped and tilted fiber Bragg gratings and filtering of stimulated Raman scattering in high-power CW oscillators[J]. High Power Laser Science and Engineering, 7, 02000e31(2019).
[59] Zhao Xiaofan, Tian Xin, Hu Qihao, et al. Raman suppression in a high-power single-mode fiber oscillator using a chirped and tilted fiber Bragg grating[J]. Laser Physics Letters, 18, 035103(2021).
[60] Wang Meng, Liu Le, Wang Zefeng, et al. Mitigation of stimulated Raman scattering in kilowatt-level diode-pumped fiber amplifiers with chirped and tilted fiber Bragg gratings[J]. High Power Laser Science and Engineering, 7, e18(2019).
[61] Tian Xin, Zhao Xiaofan, Wang Meng, et al. Effective suppression of stimulated Raman scattering in direct laser diode pumped 5 kilowatt fiber amplifier using chirped and tilted fiber bragg gratings[J]. Laser Physics Letters, 17, 085104(2020).
[62] Wang Meng, Wang Zefeng, Liu Le, et al. Effective suppression of stimulated Raman scattering in half 10 kW tandem pumping fiber lasers using chirped and tilted fiber Bragg gratings[J]. Photonics Research, 7, 167-171(2019).
[63] Tian Xin, Zhao Xiaofan, Wang Meng, et al. Influence of Bragg reflection of chirped tilted fiber Bragg grating on Raman suppression in high-power tandem pumping fiber amplifiers[J]. Optics Express, 28, 19508-19517(2020).
[65] Chen Heng, Cao Jianqiu, Huang Zhihe, et al. Experimental investigations on multi-kilowatt all-fiber distributed side-pumped oscillators[J]. Laser Physics, 29, 075103(2019).
[66] Chen Heng, Cao Jianqiu, Huang Zhihe, et al. 3kilowatt allfiber distributed sidepumped oscillat with high SRS suppression[C]Proceedings of 2018 Asia Communications Photonics Conference. 2018.
[67] Huang Zhihe, Cao Jianqiu, An Yingye, et al. A kilowatt all-fiber cascaded amplifier[J]. IEEE Photonics Technology Letters, 27, 1683-1686(2015).
[68] Ying Hanyuan, Yu Yu, Cao Jianqiu, et al. 2 kW pump-light-stripper-free distributed side-coupled cladding-pumped fiber oscillator[J]. Laser Physics Letters, 14, 065102(2017).
[69] Wang Jianming, Yan Dapeng, Xiong Songsong, et al. High power all-fiber amplifier with different seed power injection[J]. Optics Express, 24, 14463-14469(2016).
[70] Tec P S, Lewis R J, Alam S U, et al. 200 W Diffraction limited, single-polarization, all-fiber picosecond MOPA[J]. Optics Express, 21, 25883-25889(2013).
[71] Ying Hanyuan, Cao Jianqiu, Yu Yu, et al. Raman-noise enhanced stimulated Raman scattering in high-power continuous-wave fiber amplifier[J]. Optik, 144, 163-171(2017).
[72] Hu Shuling, Zhang Chunxi, Wang Shouchao, et al. Selfpulsing behavi in highpower ytterbiumdoped fiber lasers[C]Proceedings of SPIE 6823, HighPower Lasers Applications IV. 2008: 68230D.
[73] Bock V, Schultze T, Liem A, et al. The influence of different seed sources on Stimulated Raman Scattering in fiber amplifiers[C]The European Conference on Lasers ElectroOptics 2017. 2017: CJ_4_3.
[74] Li Tenglong, Zha Congwen, Sun Yinhong, et al. 3.5 kW bidirectionally pumped narrow-linewidth fiber amplifier seeded by white-noise-source phase-modulated laser[J]. Laser Physics, 28, 105101(2018).
[75] Lin H, Tao R, Li C, et al. 3.7 kW monolithic narrow linewidth single mode fiber laser through simultaneously suppressing nonlinear effects and mode instability[J]. Optics Express, 27, 9716-9724(2019).
[76] Liu Wei, Ma Pengfei, Lv Haibin, et al. Investigation of stimulated Raman scattering effect in high-power fiber amplifiers seeded by narrow-band filtered superfluorescent source[J]. Optics Express, 24, 8708-8717(2016).
[77] Bock V, Liem A, Schreiber T, et al. Explanation of Stimulated Raman Scattering in high power fiber systems[C]Proceedings of SPIE 10512, Fiber Lasers XV: Technology Systems. 2018: 105121F.
[78] Li Tenglong, Ke Weiwei, Ma Yi, et al. Suppression of stimulated Raman scattering in a high-power fiber amplifier by inserting long transmission fibers in a seed laser[J]. Journal of the Optical Society of America B, 36, 1457-1465(2019).
[79] Wang Yanshan, Peng Wanjing, Ke Weiwei, et al. Influence of seed instability on the stimulated Raman scattering of high power narrow linewidth fiber amplifier[J]. Optical and Quantum Electronics, 52, 193(2020).
[80] Yin Lu, Han Zhigang, Shen Hua, et al. Suppression of inter-modal four-wave mixing in high-power fiber lasers[J]. Optics Express, 26, 15804-15818(2018).
[81] Babin S A, Churkin D V, Ismagulov A E, et al. Four-wave-mixing-induced turbulent spectral broadening in a long Raman fiber laser[J]. Journal of the Optical Society of America B, 24, 1729-1738(2007).
[82] Hu Man, Ke Weiwei, Yang Yifeng, et al. Low threshold Raman effect in high power narrowband fiber amplifier[J]. Chinese Optics Letters, 14, 011901(2016).
[83] Liu Wei, Ma Pengfei, Zhou Pu, et al. Effects of four-wave-mixing in high-power Raman fiber amplifiers[J]. Optics Express, 28, 593-606(2020).