A 110 W fiber gas Raman laser at 1153 nm. (28th February 2023)

• Record Type: Journal Article
• Authors: Cui, Yulong; Tian, Xin; Rao, Binyu; Li, Hao; Huang, Wei; Pei, Wenxi; Wang, Meng; Chen, Zilun; Wang, Zefeng
• Is Part Of: High power laser science and engineering. Volume 11(2023)
• Publication Date: 2023-02-28
• Subjects: fiber gas laser -- narrow linewidth -- Raman scattering; High power lasers -- Periodicals; 621.366
• DOI: 10.1017/hpl.2022.43
• Languages: English
• ISSNs: 2095-4719

Abstract

Abstract: We report here the first hundred-watt continuous wave fiber gas laser in H2 -filled hollow-core photonic crystal fiber (PCF) by stimulated Raman scattering. The pump source is a homemade narrow-linewidth fiber oscillator with a 3 dB linewidth of 0.15 nm at the maximum output power of 380 W. To efficiently and stably couple several-hundred-watt pump power into the hollow core and seal the gas, a hollow-core fiber end-cap is fabricated and used at the input end. A maximum power of 110 W at 1153 nm is obtained in a 5 m long hollow-core PCF filled with 36 bar H2, and the conversion efficiency of the first Stokes power is around 48.9%. This work paves the way for high-power fiber gas Raman lasers.