Band-gap structure of spectra of periodic dielectric and acoustic media. II: Two-dimensional photonic crystals. (English) Zbl 0868.35009
[For a review of part I see Zbl 0852.35014.]
Author’s abstract: “We consider the two-component dielectric medium consisting of a periodic array of parallel air columns of square cross section embedded into a lossless optically dense host material with the dielectric constant \(\zeta>1\). We show that if \(\zeta\) is large enough and the relative distance \(\delta\) between the air columns is such that \(\zeta\delta\gg 1\) and \(\zeta\delta^2\ll 1\), then the corresponding Maxwell operator has a series of gaps in the spectrum. We also provide some analytic formulas that enable one to detect location of bands and gaps in the spectrum. In particular, the typical wavelength exhibiting a photonic and gap is \(2\pi L\sqrt{\zeta\delta}\), where \(L\) is the distance between the axes of adjacent air columns. We also give some estimates on the space distribution of electric field energy for different eigenmodes”.
Author’s abstract: “We consider the two-component dielectric medium consisting of a periodic array of parallel air columns of square cross section embedded into a lossless optically dense host material with the dielectric constant \(\zeta>1\). We show that if \(\zeta\) is large enough and the relative distance \(\delta\) between the air columns is such that \(\zeta\delta\gg 1\) and \(\zeta\delta^2\ll 1\), then the corresponding Maxwell operator has a series of gaps in the spectrum. We also provide some analytic formulas that enable one to detect location of bands and gaps in the spectrum. In particular, the typical wavelength exhibiting a photonic and gap is \(2\pi L\sqrt{\zeta\delta}\), where \(L\) is the distance between the axes of adjacent air columns. We also give some estimates on the space distribution of electric field energy for different eigenmodes”.
Reviewer: Ya.A.Rojtberg (Chernigov)
MSC:
35B27 | Homogenization in context of PDEs; PDEs in media with periodic structure |
74J20 | Wave scattering in solid mechanics |
35Q60 | PDEs in connection with optics and electromagnetic theory |
78A45 | Diffraction, scattering |