Normal dispersion Kerr cavity solitons: beyond the mean field limit

TL;DR

This paper predicts a new type of stable, bright, temporal localized structure in Kerr-Gires-Tournois interferometers operating in the normal dispersion regime, existing beyond the mean-field limit and useful for optical frequency combs.

Contribution

It introduces a novel class of cavity solitons in Kerr Gires-Tournois interferometers that exist outside the mean-field and bistable regimes, expanding the understanding of localized structures.

Findings

Existence of stable bright pulses beyond mean-field limit

Unique shape with peak intensities above steady state

Potential application in optical frequency comb generation

Abstract

We predict the existence of a novel type of temporal localized structure in injected Kerr--Gires--Tournois interferometers (KGTI). These bright pulses exist in the normal dispersion regime, yet they do not correspond to the usual scenario of domain wall locking that induces complex shape multistability, weak stability, and a reduced domain of existence. The new states are observed beyond the mean-field limit and out of the bistable region. Their shape is uniquely defined, with peak intensities beyond that of the upper steady state, and they are stable over a broad range of the injection field, highlighting their potential for optical frequency comb (OFC) generation.