Optimizing output spectral linewidth of fiber laser utilizing phase-shifted long-period fiber grating

Liu, 2016, Investigation of stimulated Raman scattering effect in high-power fiber amplifiers seeded by narrow-band filtered superfluorescent source, Opt. Exp., 24, 8708, 10.1364/OE.24.008708 Liu, 2016, General analysis of SRS-limited high-power fiber lasers and design strategy, Opt. Exp., 24, 26715, 10.1364/OE.24.026715 Chu, 2020, Experimental study of mode distortion induced by stimulated Raman scattering in high-power fiber amplifiers, Photon. Res., 8, 595, 10.1364/PRJ.383551 Kablukov, 2012, Output spectrum of Yb-doped fiber lasers, Opt. Lett., 37, 2508, 10.1364/OL.37.002508 Liu, 2015, Modeling of the spectral properties of CW Yb-doped fiber amplifier and experimental validation, Laser Phys. Lett., 12, 045104, 10.1088/1612-2011/12/4/045104 Zheng, 2018, Four-wave mixing effect on high-power continuous-wave all-fiber lasers, Modern Phys. Lett. B, 32, 1850275, 10.1142/S0217984918502755 Yin, 2018, Suppression of inter-modal four-wave mixing in high-power fiber lasers, Opt. Exp., 26, 15804, 10.1364/OE.26.015804 Wang, 2017, Fabrication of chirped and tilted fiber Bragg gratings and suppression of stimulated Raman scattering in fiber amplifiers, Opt. Exp., 25, 1529, 10.1364/OE.25.001529 Wang, 2018, Fabrication of chirped and tilted fiber Bragg gratings on large-mode-area doubled-cladding fibers by phase-mask technique, Appl. Optics, 57, 4376, 10.1364/AO.57.004376 Wang, 2019, Effective suppression of stimulated Raman scattering in half 10 kW tandem pumping fiber lasers using chirped and tilted fiber Bragg gratings, Photonics Res., 7, 167, 10.1364/PRJ.7.000167 Tian, 2020, Influence of Bragg reflection of chirped tilted fiber Bragg grating on Raman suppression in high-power tandem pumping fiber amplifiers, Opt. Exp., 28, 19508, 10.1364/OE.396250 Tian, 2020, Effective suppression of stimulated Raman scattering in direct laser diode pumped 5 kilowatt fiber amplifier using chirped and tilted fiber Bragg gratings, Laser Phys. Lett., 17, 085104, 10.1088/1612-202X/aba051 Jiao, 2019, Fabrication of kW-level chirped and tilted fiber Bragg gratings and filtering of stimulated Raman scattering in high-power CW oscillators, High Power Laser Sci. Eng., 7, 1 Jansen, 2009, Modeling the inhibition of stimulated Raman scattering in passive and active fibers by lumped spectral filters in high power fiber laser systems, Opt. Exp., 17, 16255, 10.1364/OE.17.016255 Nodop, 2010, Suppression of stimulated Raman scattering employing long period gratings in double-clad fiber amplifiers, Opt. Lett., 35, 2982, 10.1364/OL.35.002982 Jiao, 2020, Suppressing stimulated Raman scattering in kW-level continuous-wave MOPA fiber laser based on long-period fiber gratings, Opt. Exp., 28, 6048, 10.1364/OE.384760 Agrawal GP. Nonlinear Fiber Optics. 5th ed. New York: Academic Press; 2013. Schreiber, 2007, On the study of pulse evolution in ultra-short pulse mode-locked fiber lasers by numerical simulations, Opt. Exp., 15, 8252, 10.1364/OE.15.008252 Kuznetsov, 2012, Spectral broadening of incoherent nanosecond pulses in a fiber amplifier, J. Opt. Soc. Am. B, 29, 1231, 10.1364/JOSAB.29.001231 Shen X, Zhang H, Hao H, Li D, Yan P, Gong M. Self-phase modulation of nanosecond pulses in fiber amplifiers with gain saturation. Opt. Exp. 2016; 24(5): 4382-4390. https://doi.org/ 10.1364/OE.24.004382. Turitsyn, 2011, Modeling of CW Yb-doped fiber lasers with highly nonlinear cavity dynamics, Opt. Exp., 19, 8394, 10.1364/OE.19.008394 Liu, 2018, Theoretical analysis of the SRS-induced mode distortion in large-mode area fiber amplifiers, Opt. Exp., 26, 15793, 10.1364/OE.26.015793 Erdogan, 1997, Fiber grating spectra, J. Lightwave Technol., 15, 1277, 10.1109/50.618322 Erdogan, 1997, Cladding-mode resonances in short- and long-period fiber gratings filters, J. Opt. Soc. Am. A, 14, 1760, 10.1364/JOSAA.14.001760