Influence of structural parameters of high-power fiber lasers on stimulated Raman scattering and the suppression methods

Lu Yin; Zhigang Han; Mingjian Yan; Hua Shen; Rihong Zhu

doi:10.1117/12.2533083

17 May 2019 Influence of structural parameters of high-power fiber lasers on stimulated Raman scattering and the suppression methods

Lu Yin, Zhigang Han, Mingjian Yan, Hua Shen, Rihong Zhu

Author Affiliations +

Proceedings Volume 11170, 14th National Conference on Laser Technology and Optoelectronics (LTO 2019); 111701D (2019) https://doi.org/10.1117/12.2533083
Event: Fourteenth National Conference on Laser Technology and Optoelectronics, 2019, Shanghai, China

Abstract

In high-power fiber lasers, stimulated Raman scattering (SRS) is a major factor limiting its power increase. In order to analyze the influence of the SRS effect on high-power fiber lasers, based on the traditional SRS model, we propose a theoretical model of multimode fiber lasers and fiber amplifiers containing the SRS effect. Then, the theoretical model is used to analyze the influence of various structural parameters of the fiber laser on the SRS effect. According to the simulation analysis results, we constructed a fiber laser system based on a master oscillator power amplifier configuration to carry out verification experiments for various structural parameters. The experimental results show that shortening the length of the gain fiber and the transmitting fiber, choosing a signal light of longer wavelength, and increasing the fiber core diameter can suppress the influence of the SRS effect on the fiber laser. And we apply the analysis results to 3 kW fiber laser system, and successfully achieve the suppression of SRS effect in the highpower fiber laser.

Citation Download Citation

Lu Yin, Zhigang Han, Mingjian Yan, Hua Shen, and Rihong Zhu "Influence of structural parameters of high-power fiber lasers on stimulated Raman scattering and the suppression methods", Proc. SPIE 11170, 14th National Conference on Laser Technology and Optoelectronics (LTO 2019), 111701D (17 May 2019); https://doi.org/10.1117/12.2533083

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available