Publikationen des Forschungsbereichs Computergestützte Photonik

Prof. Dr. Antonio Calà Lesina

Light-opals interaction modeling by direct numerical solution of Maxwell's equations

verfasst von
Alessandro Vaccari, Antonino Calà Lesina, Luca Cristoforetti, Andrea Chiappini, Luigi Crema, Lucia Calliari, Lora Ramunno, Pierre Berini, Maurizio Ferrari
Abstract

This work describes a 3-D Finite-Difference Time-Domain (FDTD) computational approach for the optical characterization of an opal photonic crystal. To fully validate the approach we compare the computed transmittance of a crystal model with the transmittance of an actual crystal sample, as measured over the 400 ÷ 750 nm wavelength range. The opal photonic crystal considered has a face-centered cubic (FCC) lattice structure of spherical particles made of polystyrene (a non-absorptive material with constant relative dielectric permittivity). Light-matter interaction is described by numerically solving Maxwell's equations via a parallelized FDTD code. Periodic boundary conditions (PBCs) at the outer edges of the crystal are used to effectively enforce an infinite lateral extension of the sample. A method to study the propagating Bloch modes inside the crystal bulk is also proposed, which allows the reconstruction of the ω-k dispersion curve for k sweeping discretely the Brillouin zone of the crystal.

Externe Organisation(en)
Fondazione Bruno Kessler
University of Ottawa
Provincia Autonoma di Trento
Consiglio Nazionale delle Ricerche (CNR)
Typ
Artikel
Journal
Optics express
Band
22
Seiten
27739-27749
Anzahl der Seiten
11
ISSN
1094-4087
Publikationsdatum
31.10.2014
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
ASJC Scopus Sachgebiete
Atom- und Molekularphysik sowie Optik
Elektronische Version(en)
https://doi.org/10.1364/OE.22.027739 (Zugang: Unbekannt)