Novel mid-infrared dispersive wave generation in gas-filled PCF by transient ionization-driven changes in dispersion
Abstract
Gas-filled hollow-core photonic crystal fibre (PCF) is being used to generate ever wider supercontinuum spectra, in particular via dispersive wave (DW) emission in the deep and vacuum ultraviolet, with a multitude of applications. DWs are the result of the resonant transfer of energy from a self-compressed soliton, a process which relies crucially on phase matching. It was recently predicted that, in the strong-field regime, the additional transient anomalous dispersion introduced by gas ionization would allow phase-matched DW generation in the mid-infrared (MIR)-something that is forbidden in the absence of free electrons. Here we report for the first time the experimental observation of such MIR DWs, embedded in a 4.7-octave-wide supercontinuum that uniquely reaches simultaneously to the vacuum ultraviolet, with up to 1.7 W of total average power.
Keywords
Cite
@article{arxiv.1701.04843,
title = {Novel mid-infrared dispersive wave generation in gas-filled PCF by transient ionization-driven changes in dispersion},
author = {F. Köttig and D. Novoa and F. Tani and M. Cassataro and J. C. Travers and P. St. J. Russell},
journal= {arXiv preprint arXiv:1701.04843},
year = {2017}
}