4.5 W mid-infrared light source based on acetylene-filled hollow-core fibers. (July 2022)

• Record Type: Journal Article
• Authors: Huang, Wei; Zhou, Zhiyue; Cui, Yulong; Li, Hao; Pei, Wenxi; Wang, Meng; Wang, Zefeng; Chen, Jinbao
• Is Part Of: Optics & laser technology. Volume 151(2022)
• Publication Date: 2022-07
• Subjects: Mid-infrared -- Hollow core fiber -- Fiber lasers -- Gas lasers; Optics -- Periodicals; Lasers -- Periodicals; Electronic journals; 621.366
• DOI: 10.1016/j.optlastec.2022.108090
• Languages: English
• ISSNs: 0030-3992

Abstract

Highlights: Mid-infrared fiber laser based on gas-filled hollow-core fibers. 4.5 W high power output at 3.1 μm. Researches on output characteristics at high power. Abstract: We report here the characteristics of a continuous wave (CW) high-power mid-infrared (mid-IR) light source based on acetylene-filled anti-resonant hollow-core fiber (HCF). It is a single-pass configuration with 8 m HCFs, pumped by a high power erbium-doped fiber amplifier (EDFA). At the optimal gradient gas pressure of 3 mbar, a maximum power of 4.5 W at 3.1 μm is achieved, and the power conversion efficiency is ∼ 20% with respect to the absorbed pump power. It is, to the best of our knowledge, the highest output power for such mid-IR HCF lasers. This work demonstrate the great potential of fiber gas lasers for high-power output in the mid-IR.