CAICEDO, Karen; CATHEY, Andres; INFUSINO, Melissa; ARADIAN, Ashod; VELTRI, Alessandro

doi:10.1364/JOSAB.441637

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

CAICEDO, Karen
Laboratoire Photonique, Numérique et Nanosciences [LP2N]

CATHEY, Andres

INFUSINO, Melissa

Langue

Article de revue

Ce document a été publié dans

Journal of the Optical Society of America B. 2022, vol. 39, n° 1, p. 107

Optical Society of America

Résumé en anglais

Within the frame of a simple, long-wavelength, quasi-static description, we present a theoretical characterization of the optical response of metal nanoparticles doped with active gain elements in a core-shell (metallic core within an active dielectric shell) and nano-shell (active dielectric core within a metallic shell) configurations. The common feature of these structures is that, adding gain to the system produces an increase of the quality of the plasmon resonance, which becomes sharper and sharper until a singular point, after which, the system switches from absorptive to emissive (nanolaser). We use this aforementioned simple model to develop a general method allowing us to calculate both the expected singular plasmon frequency and the gain level needed to realize it and to discuss the spectral deformation occurring before and after this singular point. Finally, we propose a way to calculate if the singular behavior is reachable using realistic amounts of gain.< Réduire

Mots clés en anglais

Invisibility cloaks

Mie theory

Optical Bloch equations

Optical fields

Resonance

Resonance enhancement

Métadonnées

Partager cette publication !

Licence d’utilisation du document

Gain-driven singular resonances in active core-shell and nano-shell plasmonic particles

Langue

Ce document a été publié dans

Résumé en anglais

Mots clés en anglais

URI

DOI

Origine

Unités de recherche