Bloch Waves in High Contrast Electromagnetic Crystals
Abstract
Analytic representation formulas and power series are developed describing the band structure inside non-magnetic periodic photonic three-dimensional crystals made from high dielectric contrast inclusions. Central to this approach is the identification and utilization of a resonance spectrum for quasiperiodic source-free modes. These modes are used to represent solution operators associated with electromagnetic and acoustic waves inside periodic high contrast media. A convergent power series for the Bloch wave spectrum is recovered from the representation formulas. Explicit conditions on the contrast are found that provide lower bounds on the convergence radius. These conditions are sufficient for the separation of spectral branches of the dispersion relation for any fixed quasi-momentum.
Keywords
Cite
@article{arxiv.2110.12262,
title = {Bloch Waves in High Contrast Electromagnetic Crystals},
author = {Robert Lipton and Robert Viator and Silvia Jimenez Bolanos and Abiti Adili},
journal= {arXiv preprint arXiv:2110.12262},
year = {2021}
}
Comments
arXiv admin note: text overlap with arXiv:1512.06062, arXiv:1607.02365, arXiv:2110.08405