18 February 2014 Parallel finite-difference time-domain modeling of an opal photonic crystal
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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.
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
Alessandro Vaccari, Luca Cristoforetti, Antonino Cala' Lesina, Lora Ramunno, Andrea Chiappini, Francesco Prudenzano, Alessandro Bozzoli, Lucia Calliari, "Parallel finite-difference time-domain modeling of an opal photonic crystal," Optical Engineering 53(7), 071809 (18 February 2014). https://doi.org/10.1117/1.OE.53.7.071809 . Submission:

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