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)