Journal
OPTICS AND LASER TECHNOLOGY
Volume 151, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.optlastec.2022.108090
Keywords
Mid-infrared; Hollow core fiber; Fiber lasers; Gas lasers
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We present the characteristics of a continuous wave high-power mid-infrared light source based on acetylene-filled anti-resonant hollow-core fiber. A maximum power of 4.5W at 3.1μm is achieved at the optimal gas pressure of 3mbar, which is the highest output power reported for mid-IR HCF lasers to date. This work demonstrates the great potential of fiber gas lasers for high-power output in the mid-IR.
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 mu m 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.
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