Analytical study on the stimulated Raman scattering threshold in distributed-pumped fiber amplifiers

2019 ◽  
Vol 58 (8) ◽  
pp. 2010 ◽  
Author(s):  
Heting Du ◽  
Jianqiu Cao ◽  
Heng Chen ◽  
Zhihe Huang ◽  
Jinbao Chen
Keyword(s):  
Raman Scattering ◽  
Analytical Study ◽  
Stimulated Raman Scattering ◽  
Fiber Amplifiers ◽  
Stimulated Raman

scholarly journals Exploitation of stimulated Raman scattering in short-pulse fiber amplifiers

2010 ◽  
Vol 35 (14) ◽  
pp. 2397 ◽  
Author(s):  
Shian Zhou ◽  
Tetsuji Takamido ◽  
Shinji Imai ◽  
Frank Wise
Keyword(s):  
Raman Scattering ◽  
Stimulated Raman Scattering ◽  
Short Pulse ◽  
Fiber Amplifiers ◽  
Stimulated Raman

scholarly journals Dynamic characteristics of stimulated Raman scattering in high power fiber amplifiers in the presence of mode instabilities

2018 ◽  
Vol 26 (19) ◽  
pp. 25098 ◽  
Author(s):  
Rumao Tao ◽  
Hu Xiao ◽  
Hanwei Zhang ◽  
Jinyong Leng ◽  
Xiaolin Wang ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Dynamic Characteristics ◽  
High Power ◽  
Stimulated Raman Scattering ◽  
Fiber Amplifiers ◽  
Stimulated Raman

scholarly journals Mitigation of stimulated Raman scattering in kilowatt-level diode-pumped fiber amplifiers with chirped and tilted fiber Bragg gratings

2019 ◽  
Vol 7 ◽  
Author(s):  
Meng Wang ◽  
Le Liu ◽  
Zefeng Wang ◽  
Xiaoming Xi ◽  
Xiaojun Xu
Keyword(s):  
Raman Scattering ◽  
Fiber Lasers ◽  
Stimulated Raman Scattering ◽  
Beam Quality ◽  
Average Power ◽  
Fiber Amplifiers ◽  
Maximum Output ◽  
Power Scaling ◽  
Diode Pumped ◽  
Stimulated Raman

The average power of diode-pumped fiber lasers has been developed deeply into the kW regime in the past years. However, stimulated Raman scattering (SRS) is still a major factor limiting the further power scaling. Here, we have demonstrated the mitigation of SRS in kilowatt-level diode-pumped fiber amplifiers using a chirped and tilted fiber Bragg grating (CTFBG) for the first time. The CTFBG is designed and inscribed in large-mode-area (LMA) fibers, matching with the operating wavelength of the fiber amplifier. With the CTFBG inserted between the seed laser and the amplifier stage, an SRS suppression ratio of ${\sim}10~\text{dB}$ is achieved in spectrum at the maximum output laser power of 2.35 kW, and there is no reduction in laser slope efficiency and degradation in beam quality. This work proves the feasibility and practicability of CTFBGs for SRS suppression in high-power fiber lasers, which is very useful for the further power scaling.

Investigation of stimulated Raman scattering in high-power co-pumping fiber amplifiers

Laser Physics ◽  
2018 ◽  
Vol 28 (10) ◽  
pp. 105105
Author(s):  
Jinkun Zheng ◽  
Wei Zhao ◽  
Baoyin Zhao ◽  
Zhe Li ◽  
Gang Li ◽  
...  
Keyword(s):  
Raman Scattering ◽  
High Power ◽  
Stimulated Raman Scattering ◽  
Fiber Amplifiers ◽  
Stimulated Raman
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