Fano resonances in photonic crystal slabs near optical bound states in the continuum

Abstract : Photonic crystal slabs are able to support optical bound states in the continuum. The latter are eigenmodes of the structure that are truly guided (no radiation leakage) despite the fact that they lie above the light cone within the continuum of radiation modes. Such peculiar states can be viewed as modes with an infinite quality factor Q. Therefore, the question of the behavior of Fano resonances, as optogeometrical parameters are tuned close to optical bound states in the continuum, is of importance for applications of photonic crystal slabs with ultrahigh Q factors. We study theoretically the reflection and transmission of a photonic crystal slab close to an optical bound state in the continuum with a phenomenological approach involving the poles and zeros of the scattering matrix. In particular, we derive a general relation valid for asymmetric structures that gives the position of a pole in the complex plane as a function of the positions of the zeros. We provide closed-form expressions for the reflection and transmission. The proposed phenomenological approach is validated through rigorous numerical calculations.
Type de document :
Article dans une revue
Physical Review B : Condensed matter and materials physics, American Physical Society, 2016, 94 (15), pp.155303 - 155303. 〈10.1103/PhysRevB.94.155303〉
Liste complète des métadonnées

Littérature citée [29 références]  Voir  Masquer  Télécharger

https://hal-iogs.archives-ouvertes.fr/hal-01710945
Contributeur : Christophe Sauvan <>
Soumis le : vendredi 16 février 2018 - 15:32:34
Dernière modification le : jeudi 22 février 2018 - 01:11:21
Document(s) archivé(s) le : dimanche 6 mai 2018 - 06:27:29

Fichier

blanchard_prb_16.pdf
Fichiers éditeurs autorisés sur une archive ouverte

Identifiants

Citation

Cédric Blanchard, Jean-Paul Hugonin, Christophe Sauvan. Fano resonances in photonic crystal slabs near optical bound states in the continuum. Physical Review B : Condensed matter and materials physics, American Physical Society, 2016, 94 (15), pp.155303 - 155303. 〈10.1103/PhysRevB.94.155303〉. 〈hal-01710945〉

Partager

Métriques

Consultations de la notice

71

Téléchargements de fichiers

92