Open Access083 W, single-pass, 154 μm gas Raman source generated in a CH4-filled hollow-core fiber operating at atmospheric pressure
Author(s) -
Zhixian Li,
Wei Huang,
Yulong Cui,
Zefeng Wang,
Wuming Wu
Publication year - 2018
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.26.012522
Subject(s) - materials science , optics , raman scattering , atmospheric pressure , raman spectroscopy , core (optical fiber) , laser , fiber , amplifier , methane , energy conversion efficiency , fiber laser , power (physics) , optoelectronics , physics , chemistry , organic chemistry , cmos , quantum mechanics , meteorology , composite material
We report here the first watt-level efficient single-pass 1.54 μm fiber gas Raman source by methane-filled hollow-core fiber operating at atmospheric pressure. Pumped with a high-power MOPA (master oscillator power amplifier) structure Q-switched 1.06 μm pulsed solid-state laser, efficient 1.54 μm Stokes wave is generated in a single-pass configuration by vibrational stimulated Raman scattering of methane molecules. With an experimentally optimized fiber length of 3.2 m, we get a 1543.9 nm Stokes wave operating at atmospheric pressure with a record average power of ~0.83 W, which is about 12 times higher than the similar experiment previously reported, and the corresponding power conversion efficiency is about 45%. Operating at atmospheric pressure makes it more convenient in future applications.