[1] Richardson D J, Nilsson J, Clarkson W A. High power fiber lasers: current status and future perspectives [Invited][J]. Journal of the Optical Society of America B, 27, B63-B92(2010). http://www.opticsinfobase.org/abstract.cfm?uri=josab-27-11-B63
[2] Nilsson J, Payne D N. High-power fiber lasers[J]. Science, 332, 921-922(2011).
[3] Zervas M N, Codemard C A. Highpower fiber lasers: a review[J]. IEEE Journal of Selected Topics in Quantum Electronics, 20, 219-241(2014). http://ieeexplore.ieee.org/document/6808413/
[4] Zervas M N. High power ytterbium-doped fiber lasers: fundamentals and applications[J]. International Journal of Modern Physics B, 28, 1442009(2014). http://www.worldscientific.com/doi/abs/10.1142/S0217979214420090
[5] Dominic V. MacCormack S, Waarts R, et al. 110 W fibre laser[J]. Electronics Letters, 35, 1158-1160(1999).
[6] Gapontsev V, Gapontsev D, Platonov N et al. 2 kW CW ytterbium fiber laser with record diffraction-limited brightness. [C]∥Conference on Lasers and Electro-Optics Europe, 508(2005).
[8] Yu H. Kliner D A V, Liao K, et al. 1.2-kW single-mode fiber laser based on 100-W high-brightness pump diodes[J]. Proceedings of SPIE, 8237, 82370G(2012).
[11] O'Connor M. Gapontsev V, Fomin V, et al. Power scaling of SM fiber lasers toward 10 kW. [C]∥Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, OSA, CThA3(2009).
[12] Shiner B. The impact of fiber laser technology on the world wide material processing market. [C]∥Conference on Lasers and Electro-Optics Europe, AF2J, 1(2013).
[13] Dai S J, He B, Zhou J et al. 1.5 kW near single-mode all-fiber laser[J]. Chinese Journal of Lasers, 40, 0702001(2013).
[14] Yu H L, Zhang H W, Lv H et al. 315 kW direct diode-pumped near diffraction-limited all-fiber-integrated fiber laser[J]. Applied Optics, 54, 4556-4560(2015). http://www.ncbi.nlm.nih.gov/pubmed/25967516
[15] Wang X L, Zhang H W, Tao R M et al. laser diode pumped 4.1 kW all-fiber laser with master oscillator power amplification configuration[J]. Chinese Journal of Lasers, 43, 1105001(2016).
[16] Smith A V, Smith J J. Mode instability in high power fiber amplifiers[J]. Optics Express, 19, 10180-10192(2011). http://www.opticsinfobase.org/abstract.cfm?URI=oe-19-11-10180
[17] Hansen K R, Alkeskjold T T, Broeng J et al. Theoretical analysis of mode instability in high-power fiber amplifiers[J]. Optics Express, 21, 1944-1971(2013). http://europepmc.org/abstract/MED/23389177
[18] Haarlammert N, de Vries O, Liem A et al. . Build up and decay of mode instability in a high power fiber amplifier[J]. Optics Express, 20, 13274-13283(2012). http://www.ncbi.nlm.nih.gov/pubmed/22714355
[19] Tao R M, Wang X L, Xiao H et al. Theoretical study of the threshold power of mode instability in high-power fiber amplifiers[J]. Acta Optica Sinica, 34, 0114002(2014).
[20] Mohammed W, Gu X. Fiber Bragg grating in large-mode-area fiber for high power fiber laser applications[J]. Applied Optics, 49, 5297-5301(2010). http://www.ncbi.nlm.nih.gov/pubmed/20885465
[22] Jeong Y, Sahu J K, Payne D N et al. Ytterbium-doped large-core fiber laser with 1 kW continuous-wave output power. [C]∥Conference on Lasers and Electro-Optics Europe, PDP13(2004).
[23] Jeong Y, Sahu J K, Payne D N et al. Ytterbium-doped large-core fiber laser with 1.36 kW continuous-wave output power[J]. Optics Express, 12, 6088-6092(2004). http://europepmc.org/abstract/MED/19488250
[24] Jeong Y C, Boyland A J, Sahu J K et al. Multi-kilowatt single-mode ytterbium-doped large-core fiber laser[J]. Journal of the Optical Society of Korea, 13, 416-422(2009). http://www.opticsinfobase.org/abstract.cfm?uri=josk-13-4-416
[25] Khitrov V, Minelly J D, Tumminelli R et al. 3 kW single-mode direct diode-pumped fiber laser[J]. Proceedings of SPIE, 8961, 89610V(2014). http://spie.org/Publications/Proceedings/Paper/10.1117/12.2037453
[26] Xiao Y, Brunet F, Kanskar M et al. 1-kilowatt CW all-fiber laser oscillator pumped with wavelength-beam-combined diode stacks[J]. Optics Express, 20, 3296-3301(2012). http://europepmc.org/abstract/med/22330567
[27] Yu H L, Wang X L, Tao R M et al. 15 kW, near-diffraction-limited, high-efficiency, single-end-pumped all-fiber-integrated laser oscillator[J]. Applied Optics, 53, 8055-8059(2014). http://europepmc.org/abstract/med/25607963
[28] Shima K, Ikoma S, Uchiyama K et al. 5-kW single stage all-fiber Yb-doped single-mode fiber laser for materials processing[J]. Proceedings of SPIE, 10512, 105120C(2018). http://www.spiedigitallibrary.org/conference-proceedings-of-spie/10512/105120C/5-kW-single-stage-all-fiber-Yb-doped-single-mode/10.1117/12.2287624.full
[29] Shi W, Fang Q, Xu Y et al. 1.63 kW monolithic continuous-wave single-mode fiber laser oscillator[J]. Journal of Optoelectronics·Laser, 26, 662-666(2015).
[30] Mashiko Y, Nguyen H K, Kashiwagi M et al. 2 kW single-mode fiber laser with 20-m long delivery fiber and high SRS suppression[J]. Proceedings of SPIE, 9728, 972805(2016). http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=2503097
[31] Yang B L, Zhang H W, Shi C et al. Mitigating transverse mode instability in all-fiber laser oscillator and scaling power up to 2.5 kW employing bidirectional-pump scheme[J]. Optics Express, 24, 27828-27835(2016). http://europepmc.org/abstract/med/27906351
[32] Yang B L, Zhang H W, Shi C et al. 3.05 kW monolithic fiber laser oscillator with simultaneous optimizations of stimulated Raman scattering and transverse mode instability[J]. Journal of Optics, 20, 025802(2018). http://adsabs.harvard.edu/abs/2018JOpt...20b5802Y
[33] Xu Y, Fang Q, Xie Z X et al. Single fiber quasi-single mode 2 kW all-fiber laser oscillator based on single-end 915 nm semiconductor laser forward-pumping[J]. Chinese Journal of Lasers, 43, 0401003(2018).
[34] Zhang X, Zhang F, Zheng W et al. 2-kW single-mode fiber laser employing bidirectional-pump scheme[J]. Proceedings of SPIE, 10619, 106190G(2017). http://www.cnki.com.cn/Article/CJFDTOTAL-GDGC201710020.htm
[35] Ikoma S, Nguyen H K, Kashiwagi M et al. 3 kW single stage all-fiber Yb-doped single-mode fiber laser for highly reflective and highly thermal conductive materials processing[J]. Proceedings of SPIE, 10083, 100830Y(2017). http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=2606903
[36] Yang B L, Zhang H W, Ye Q et al. 4.05 kW monolithic fiber laser oscillator based on home-made large mode area fiber Bragg gratings[J]. Chinese Optics Letters, 16, 031407(2018). http://www.opticsjournal.net/Articles/Abstract?aid=OJ180315000085fLiOkR
[37] Yang B L, Shi C, Zhang H W et al. Monolithic fiber laser oscillator with record high power[J]. Laser Physics Letters, 15, 075106(2018).
[38] Liao L, Liu P, Xing Y B et al. A kW continuous-wave ytterbium-doped all-fiber laser oscillator with domestic fiber components and gain fiber[J]. Chinese Physics Letters, 32, 064201(2015). http://www.cqvip.com/QK/84212X/201506/665068898.html
[39] Wang X L, Tao R M, Zhang H W et al. 1 kilowatt single-end pumped all-fiber laser oscillator with good beam quality and high stability[J]. Chinese Journal of Lasers, 41, 1105001(2014).
[40] Zhang H W, Wang X L, Yang B L et al. All-fiber laser oscillator realized 2.5 kW power and single mode output[J]. Chinese Journal of Lasers, 43, 1115002(2016).
[41] Zhang H W, Yang B L, Wang X L et al. 2.7 kW all-fiber laser oscillator based on domestic 25/400 μm gratings[J]. Chinese Journal of Lasers, 44, 1215001(2017).
[42] Zhang H W, Wang X L, Yang B L et al. All-fiber laser oscillator with output power break through 3 kW[J]. Chinese Journal of Lasers, 44, 0415001(2017).
[43] Yang B L, Zhang H W, Wang X L et al. Mitigating transverse mode instability in a single-end pumped all-fiber laser oscillator with a scaling power of up to 2 kW[J]. Journal of Optics, 18, 105803(2016).
[44] Yla-Jarkko K H, Codemard C, Singleton J et al. . Low-noise intelligent cladding-pumped L-band EDFA[J]. IEEE Photonics Technology Letters, 15, 909-911(2003).
[45] Chen J B, Cao J Q, Pan Z Y et al. Multi-stage cascaded distributed side pumped fiber optic oscillator based on domestic optical fiber for power output of 2 kW[J]. Chinese Journal of Lasers, 44, 0415002(2017).
[46] Chen J B, Cao J Q, Huang Z H et al. Multi-stage cascade distributed side-pumped fiber optic oscillator based on domestic optical fiber for power output of 3 kW level with strong Raman suppression[J]. Chinese Journal of Lasers, 45, 0315002(2018).
[47] Ma X, Liu C H, Chang G Q et al. Angular-momentum coupled optical waves in chirally-coupled-core fibers[J]. Optics Express, 19, 26515-26528(2011). http://www.ncbi.nlm.nih.gov/pubmed/22274236
[48] Dong L, Peng X, Li J. Leakage channel optical fibers with large effective area[J]. Journal of the Optical Society of America B, 24, 1689-1697(2007). http://www.opticsinfobase.org/abstract.cfm?id=140002
[49] Stutzki F, Jansen F, Eidam T et al. High average power large-pitch fiber amplifier with robust single-mode operation[J]. Optics Letters, 36, 689-691(2011). http://europepmc.org/abstract/MED/21368950
[50] Jain D, Jung Y, Nunez-Velazquez M et al. Extending single mode performance of all-solid large-mode-area single trench fiber[J]. Optics Express, 22, 31078-31091(2014). http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-22-25-31078
[51] Kashiwagi M, Saitoh K, Takenaga K et al. Effectively single-mode all-solid photonic bandgap fiber with large effective area and low bending loss for compact high-power all-fiber lasers[J]. Optics Express, 20, 15061-15070(2012). http://www.ncbi.nlm.nih.gov/pubmed/22772202
[52] Ma X, Zhu C, Hu I et al. Single-mode chirally-coupled-core fibers with larger than 50 μm diameter cores[J]. Optics Express, 22, 9206-9219(2014). http://europepmc.org/abstract/med/24787810
[53] Limpert J, Stutzki F, Jansen F et al. Yb-doped large-pitch fibres: effective single-mode operation based on higher-order mode delocalisation[J]. Light: Science & Applications, 1, e8(2012). http://links.ealert.nature.com/ctt?kn=5&ms=NDQ3MDU2NDES1&r=MTc3MDQ1ODgzMAS2&b=0&j=MjIzODI5ODgxS0&mt=1&rt=0
[54] Kanskar M, Zhang J, Koponen J et al. Narrowband transverse-modal-instability (TMI)-free Yb-doped fiber amplifiers for directed energy applications[J]. Proceedings of SPIE, 10512, 105120F(2018).
[55] Tao R M, Ma P F, Wang X L et al. Mitigating of modal instabilities in linearly-polarized fiber amplifiers by shifting pump wavelength[J]. Journal of Optics, 17, 045504(2015).
[56] Tao R M, Ma P F, Wang X L et al. Theoretical study of pump power distribution on modal instabilities in high power fiber amplifiers[J]. Laser Physics Letters, 14, 025002(2017). http://adsabs.harvard.edu/abs/2017LaPhL..14b5002T
[57] Chai Q, Liu Y, Zhang J et al. Asymmetric transmission and reflection spectra of FBG in single-multi-single mode fiber structure[J]. Optics Express, 23, 11665-11673(2015). http://europepmc.org/abstract/med/25969258
[58] Jauregui C, Eidam T, Limpert J et al. Impact of modal interference on the beam quality of high-power fiber amplifiers[J]. Optics Express, 19, 3258-3271(2011). http://www.ncbi.nlm.nih.gov/pubmed/21369148
[59] Zhu J, Zhou P, Ma Y et al. Power scaling analysis of tandem-pumped Yb-doped fiber lasers and amplifiers[J]. Optics Express, 19, 18645-18654(2011). http://europepmc.org/abstract/med/21935233