This work describes a computational approach for the optical characterization of an opal photonic crystal (PC). We intend, in particular, to validate our approach by comparing the transmittance of a crystal model, as obtained by numerical simulation, with the transmittance of the same crystal, as measured over 400- to 700-nm wavelength range. We consider an opal PC with a face-centered cubic lattice structure of spherical particles made of polystyrene (a nonabsorptive material with constant relative dielectric permittivity). Light-crystal interaction is simulated by numerically solving Maxwell’s equations via the finite-difference time-domain method and by using the Kirchhoff formula to calculate the far field. A method to study the propagating Bloch modes inside the crystal bulk is also sketched.
|Autori interni:||PRUDENZANO, Francesco|
|Titolo:||Parallel finite-difference time-domain modeling of an opal photonic crystal|
|Data di pubblicazione:||2014|
|Digital Object Identifier (DOI):||10.1117/1.OE.53.7.071809|
|Appare nelle tipologie:||1.1 Articolo in rivista|