Suppression of coherence degradation due to plasma contribution in high-power supercontinuum generation in coated metallic hollow waveguides

TL;DR

This paper demonstrates that plasma effects in coated metallic hollow waveguides can suppress coherence degradation in high-power supercontinuum generation, resulting in highly coherent, broad spectra with high spectral power density.

Contribution

It introduces a method to maintain high coherence in supercontinuum generation by leveraging plasma contributions in specialized waveguides, a novel approach in the field.

Findings

Supercontinua with two-octave bandwidths predicted.

Spectral power densities reach MW/nm levels.

High coherence maintained due to plasma-induced seed components.

Abstract

We study the suppression of noise degradation in high-power soliton-induced supercontinuum generation under the influence of plasma contributions in metallic dielectric-coated hollow waveguides. The high coherence of the supercontinuum is related to the coherent seed components formed by the abruptly rising plasma density. We predict the generation of highly coherent supercontinua with two-octave broad spectra and spectral power densities in the range ofMW/nm in such waveguides.