his animation by Antonino Calà Lesina and collaborators shows the interaction of a plane-wave optical pulse with a face-centered cubic photonic crystal (opals), formed by a lattice of polystyrene spheres of radius 118 nm with a filling factor of 0.74. A multi-frequency analysis is performed with an in-house Finite-Difference Time-Domain (FDTD) parallel code to calculate the transmittance and reflectance. The transmittance shows a band-gap around 550 nm, indicating that the propagation of the green component of the optical spectrum is forbidden. The simulations were performed on the IBM Blue Gene/Q at SciNet (Compute Canada / SOSCIP).
For more details, please see A. Vaccari, A. Calà Lesina, L. Cristoforetti, A. Chiappini, L. Crema, L. Calliari, L. Ramunno, P. Berini, and M. Ferrari, “Light-opals interaction modeling by direct numerical solution of Maxwell’s equations,” Opt. Express 22, 27739-27749 (2014).