Suppression of stimulated Raman scattering in a monolithic fiber laser oscillator using chirped and tilted fiber Bragg gratings

2018 ◽  
Author(s):  
Zefeng Wang ◽  
Meng Wang ◽  
Le Liu ◽  
Xiaojun Xu ◽  
Qihao Hu
Keyword(s):  
Raman Scattering ◽  
Fiber Laser ◽  
Stimulated Raman Scattering ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Laser Oscillator ◽  
Stimulated Raman

Relationship Between Transverse Mode Instability and Stimulated Raman Scattering in Ytterbium Doped All-Fiber Laser Oscillator

2018 ◽  
Vol 45 (8) ◽  
pp. 0801008
Author(s):  
王小林 Wang Xiaolin ◽  
陶汝茂 Tao Rumao ◽  
杨保来 Yang Baolai ◽  
史尘 Shi Chen ◽  
张汉伟 Zhang Hanwei ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Fiber Laser ◽  
Stimulated Raman Scattering ◽  
Transverse Mode ◽  
Laser Oscillator ◽  
Mode Instability ◽  
Stimulated Raman

scholarly journals Fabrication of kW-level chirped and tilted fiber Bragg gratings and filtering of stimulated Raman scattering in high-power CW oscillators

2019 ◽  
Vol 7 ◽  
Author(s):  
Kerong Jiao ◽  
Jian Shu ◽  
Hua Shen ◽  
Zhiwen Guan ◽  
Feiyan Yang ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Power Systems ◽  
High Power ◽  
Stimulated Raman Scattering ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
The Core ◽  
Hydrogen Molecules ◽  
Hydroxyl Compounds ◽  
Stimulated Raman

Suppression of stimulated Raman scattering (SRS) by means of chirped and tilted fiber Bragg gratings (CTFBGs) has become a key topic. However, research on high-power systems is still lacking due to two problems. Firstly, after the inscription, there are a large number of hydroxyl compounds and hydrogen molecules in CTFBGs that cause significant heating due to their strong infrared absorption. Secondly, CTFBGs can couple Stokes light from the core to the cladding and the coating, which causes serious heating in the coating of the CTFBG. Aimed at overcoming these bottlenecks, a process that combines constant-low-temperature and variable-high-temperature annealing is used to reduce the thermal slope of the CTFBG. Also, a segmented-corrosion cladding power stripping technology is used on the CTFBG to remove the Stokes light which is coupled to the cladding, which solves the problem of overheating in the coating of the CTFBG. Thereby, a CTFBG with both a kilowatt-level power-carrying load and the ability to suppress SRS in a fiber laser has been developed. Further, we establish a kW-level CW oscillator to test the CTFBG. Experimental results demonstrate that the power-carrying load of the CTFBG is close to 1 kW, the thermal slope is lower than $0.015\,^{\circ }\text{C}/\text{W}$, and the SRS suppression ratio is nearly 23 dB.

scholarly journals Fabrication of chirped and tilted fiber Bragg gratings and suppression of stimulated Raman scattering in fiber amplifiers

2017 ◽  
Vol 25 (2) ◽  
pp. 1529 ◽  
Author(s):  
Meng Wang ◽  
Yujing Zhang ◽  
Zefeng Wang ◽  
Junjie Sun ◽  
Jianqiu Cao ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Stimulated Raman Scattering ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Fiber Amplifiers ◽  
Stimulated Raman

Subharmonic Synchronization of Picosecond Yb Fiber Laser to Picosecond Ti:Sapphire Laser for Stimulated Raman Scattering Microscopy

2012 ◽  
Vol 51 ◽  
pp. 022702 ◽  
Author(s):  
Wataru Umemura ◽  
Kenta Fujita ◽  
Yasuyuki Ozeki ◽  
Ken Goto ◽  
Kazuhiko Sumimura ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Fiber Laser ◽  
Stimulated Raman Scattering ◽  
Ti:Sapphire Laser ◽  
Stimulated Raman
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