Impact of weak end-facet reflections on the SRS threshold of high-power fiber oscillators and amplifiers

Qi Chen; Wei Liu; Yisha Chen; Pengfei Ma; Zefeng Wang

doi:10.1117/12.3021580

22 December 2023 Impact of weak end-facet reflections on the SRS threshold of high-power fiber oscillators and amplifiers

Qi Chen, Wei Liu, Yisha Chen, Pengfei Ma, Zefeng Wang

Author Affiliations +

Proceedings Volume 12974, Fifth International Symposium on High Power Laser Science and Engineering (HPLSE 2023); 129740U (2023) https://doi.org/10.1117/12.3021580
Event: Fifth International Symposium on High Power Laser Science and Engineering, 2023, Suzhou, China

Abstract

In this study, we compare and illustrate how weak end-facet reflections affect high-power fiber oscillators and fiber amplifiers' stimulated Raman scattering (SRS) threshold. The simulation results reveal that the enhancement of weak end-facet reflections could decrease the SRS threshold of high-power fiber lasers significantly, especially for fiber amplifiers employing phase-modulated single-frequency lasers as seed lasers. Further comparisons point out that weakening reflections at either the input or output end-facet provides an effective approach to improve the SRS threshold of high-power fiber lasers. In addition, weak end-facet reflections could even invalidate the strategy of suppressing the SRS effect through filtering out the Raman component in seed laser. The theoretical approach and findings may serve as a useful guide for designing high-power fiber laser systems with SRS limitations.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Qi Chen, Wei Liu, Yisha Chen, Pengfei Ma, and Zefeng Wang "Impact of weak end-facet reflections on the SRS threshold of high-power fiber oscillators and amplifiers", Proc. SPIE 12974, Fifth International Symposium on High Power Laser Science and Engineering (HPLSE 2023), 129740U (22 December 2023); https://doi.org/10.1117/12.3021580

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