General analysis of SRS-limited high-power fiber lasers and design strategy.

In this paper, a spectral model by incorporating SRS effect is proposed and established, which is feasible for analyzing the SRS effect both in high-power fiber oscillator and master oscillator power amplifier (MOPA) system. The theoretical results show that the SRS effect is tightly related to the bandwidths of the fiber Bragg gratings (FBGs) and it can be efficiently suppressed by optimizing the bandwidth of the FBGs. Besides, the established theoretical model is also feasible for analyzing the influence of seed power on the SRS effect. The theoretical predictions agree well with the previous experimental results.

[1]  R. Smith.  Optical power handling capacity of low loss optical fibers as determined by stimulated Raman and brillouin scattering. , 1972, Applied optics.

[2]  Pengfei Ma,et al.  Kilowatt-level fiber amplifier with spectral-broadening-free property, seeded by a random fiber laser. , 2015, Optics letters.

[3]  Dapeng Yan,et al.  High power all-fiber amplifier with different seed power injection. , 2016, Optics express.

[4]  Zejin Liu,et al.  Power scaling analysis of tandem-pumped Yb-doped fiber lasers and amplifiers. , 2011, Optics express.

[5]  J K Sahu,et al.  Suppression of stimulated Raman scattering in a high power Yb-doped fiber amplifier using a W-type core with fundamental mode cut-off. , 2006, Optics express.

[6]  David J. Richardson,et al.  High power fiber lasers: current status and future perspectives [Invited] , 2010 .

[7]  C. Henry.  Theory of spontaneous emission noise in open resonators and its application to lasers and optical amplifiers , 1986 .

[8]  Srikanth Sugavanam,et al.  Intensity dynamics and statistical properties of random distributed feedback fiber laser. , 2015, Optics letters.

[9]  J. Limpert,et al.  Analysis of stimulated Raman scattering in cw kW fiber oscillators , 2014, Photonics West - Lasers and Applications in Science and Engineering.

[10]  Yong Wang,et al.  Analysis of Raman and thermal effects in kilowatt fiber lasers , 2004 .

[11]  Pu Zhou,et al.  Power scaling of narrowband high-power all-fiber superfluorescent fiber source to 1.87  kW. , 2015, Optics letters.

[12]  A E Bednyakova,et al.  Generation dynamics of the narrowband Yb-doped fiber laser. , 2013, Optics Express.

[13]  Cesar Jauregui,et al.  Derivation of Raman treshold formulas for CW double-clad fiber amplifiers. , 2009, Optics express.

[14]  Pengfei Ma,et al.  Investigation of stimulated Raman scattering effect in high-power fiber amplifiers seeded by narrow-band filtered superfluorescent source. , 2016, Optics express.

[15]  Qirong Xiao,et al.  933 W Yb-doped fiber ASE amplifier with 50.4 nm bandwidth. , 2016, Optics express.

[16]  R. Beach,et al.  Analysis of the scalability of diffraction-limited fiber lasers and amplifiers to high average power. , 2008, Optics express.