[8a-A31-1~8] 3.4 Laser system and materials

12:15 PM - 12:30 PM JST(3:15 AM - 3:30 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[8a-A31-8] Analytical solutions of stimulated Brillouin scattering under phase modulation for high-power nanosecond fiber lasers

〇Yuya Imaeda^1,2, Tsubasa Endo¹, Kotaro Nakagawa¹, Yohei Kobayashi¹ (1.ISSP, Univ.Tokyo, 2.Hamamatsu Photonics K.K.)

Keywords:

nanosecond laser,nonlinear optics,stimulated Brillouin scattering

Stimulated Brillouin scattering (SBS), which limits the power scaling of nanosecond fiber lasers, can be suppressed by applying phase modulation to the input light. However, analytical formulas are currently available only for a few representative and idealized phase-modulation methods. In this work, we present a general framework for analytically deriving the SBS threshold under phase modulation and obtain two new analytical solutions. This presentation will also discuss the results of experimental validation.