Open AccessHigh peak power 28 μm Raman laser in a methane-filled negative-curvature fiber
Author(s) -
Ling Cao,
Shoufei Gao,
Zhigang Peng,
Xiaocong Wang
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.26.005609
Subject(s) - supercontinuum , materials science , optics , raman spectroscopy , raman scattering , laser , fiber laser , methane , raman laser , coherent anti stokes raman spectroscopy , laser power scaling , photonic crystal fiber , optical fiber , physics , chemistry , organic chemistry
We demonstrate a 2.8 μm gas Raman laser in a methane-filled hollow-core negative-curvature fiber with average power of 113 mW, pulse energy of 113 μJ and estimated peak power of 9.5 MW. Raman quantum efficiency of 40% has been reached from the pump source at 1.064 μm to the 2nd order vibrational Stokes at 2.812 μm using 1.8 MPa methane gas. To our knowledge, this is the first high peak power fiber-based gas Raman laser in mid-infrared region and a range of applications in supercontinuum generation, laser surgery, molecular tracing and gas detection are in prospect.