Low-noise octave-spanning mid-infrared supercontinuum generation in a multimode chalcogenide fiber
Abstract
We demonstrate the generation of a low-noise, octave-spanning mid-infrared supercontinuum from 1700 to 4800 nm by injecting femtosecond pulses into the normal dispersion regime of a multimode step-index chalcogenide fiber with 100 m core diameter. We conduct a systematic study of the intensity noise across the supercontinuum spectrum and show that the initial fluctuations of the pump laser are at most amplified by a factor of three. We also perform a comparison with the noise characteristics of an octave-spanning supercontinuum generated in the anomalous dispersion regime of a multimode fluoride fiber with similar core size and show that the all-normal dispersion supercontinuum in the multimode chalcogenide fiber has superior noise characteristics. Our results open up novel perspective for many practical applications such as long-distance remote sensing where high power and low noise are paramount.
Cite
@article{arxiv.2003.03864,
title = {Low-noise octave-spanning mid-infrared supercontinuum generation in a multimode chalcogenide fiber},
author = {Zahra Eslami and Piotr Ryczkowski and Lauri Salmela and Goëry Genty},
journal= {arXiv preprint arXiv:2003.03864},
year = {2020}
}
Comments
(7 pages,6 figures)