Multipole surface solitons in layered thermal media

TL;DR

This paper investigates the existence and stability of multipole surface solitons at thermal interfaces, revealing that layered media enable stabilization of higher-order multipoles compared to uniform media.

Contribution

It demonstrates that layered thermal media can stabilize higher-order multipole surface solitons, unlike uniform media where stability is limited to fewer poles.

Findings

Uniform media support stable surface multipoles with fewer than three poles.

Layered thermal media enable stabilization of higher-order multipoles.

Periodic alternation of thermo-optic coefficient enhances soliton stability.

Abstract

We address the existence and properties of multipole solitons localized at a thermally insulating interface between uniform or layered thermal media and a linear dielectric. We find that in the case of uniform media, only surface multipoles with less than three poles can be stable. In contrast, we reveal that periodic alternation of the thermo-optic coefficient in layered thermal media makes possible the stabilization of higher order multipoles.