Effective suppression of stimulated Raman scattering in high power fiber amplifiers using double-pass scheme

2014 ◽  
Author(s):  
Po-Yen Lai ◽  
Chun-Lin Chang ◽  
Sheng-Lung Huang ◽  
Shih-Hung Chen
Keyword(s):  
Raman Scattering ◽  
High Power ◽  
Stimulated Raman Scattering ◽  
Fiber Amplifiers ◽  
Double Pass ◽  
Effective Suppression ◽  
Pass Scheme ◽  
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

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

scholarly journals Effective suppression of mode distortion induced by stimulated Raman scattering in high-power fiber amplifiers

2021 ◽  
Vol 9 ◽  
Author(s):  
Wei Gao ◽  
Wenhui Fan ◽  
Pei Ju ◽  
Gang Li ◽  
Yanpeng Zhang ◽  
...  
Keyword(s):  
Raman Scattering ◽  
High Power ◽  
Stimulated Raman Scattering ◽  
Beam Quality ◽  
Fiber Amplifiers ◽  
Threshold Power ◽  
High Beam ◽  
Effective Suppression ◽  
High Beam Quality ◽  
Feedback Coefficient

Abstract Mode distortion induced by stimulated Raman scattering (SRS) has become a new obstacle for the further development of high-power fiber lasers with high beam quality. Here, an approach for effective suppression of the SRS-induced mode distortion in high-power fiber amplifiers has been demonstrated experimentally by adjusting the seed power (output power of seed source) and forward feedback coefficient of the rear port in the seed source. It is shown that the threshold power of the SRS-induced mode distortion can be increased significantly by reducing the seed power or the forward feedback coefficient. Moreover, it has also been found that the threshold power is extremely sensitive to the forward feedback power value from the rear port. The influence of the seed power on the threshold power can be attributed to the fact that the seed power plays an important role in the effective length of the gain fiber in the amplifier. The influence of the forward feedback coefficient on the threshold power can be attributed to the enhanced SRS configuration because the end surface of the rear port together with the fiber in the amplifier constitutes a half-opening cavity. This suppression approach will be very helpful to further develop the high-power fiber amplifiers with high beam quality.

Modal instability induced by stimulated Raman scattering in high-power Yb-doped fiber amplifiers

2017 ◽  
Vol 42 (24) ◽  
pp. 5274 ◽  
Author(s):  
K. Hejaz ◽  
M. Shayganmanesh ◽  
R. Rezaei-Nasirabad ◽  
A. Roohforouz ◽  
S. Azizi ◽  
...  
Keyword(s):  
Raman Scattering ◽  
High Power ◽  
Stimulated Raman Scattering ◽  
Fiber Amplifiers ◽  
Stimulated Raman

Experimental study of mode distortion induced by stimulated Raman scattering in high-power fiber amplifiers

2020 ◽  
Vol 8 (4) ◽  
pp. 595 ◽  
Author(s):  
Qiuhui Chu ◽  
Qiang Shu ◽  
Zeng Chen ◽  
Fengyun Li ◽  
Donglin Yan ◽  
...  
Keyword(s):  
Experimental Study ◽  
Raman Scattering ◽  
High Power ◽  
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
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