Photonic band structure calculations using scattering matrices

L. C. Botten, N. A. Nicorovici, R. C. McPhedran, C. Martijn de Sterke, and A. A. Asatryan
Phys. Rev. E 64, 046603 – Published 20 September 2001
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Abstract

We consider band structure calculations of two-dimensional photonic crystals treated as stacks of one-dimensional gratings. The gratings are characterized by their plane wave scattering matrices, the calculation of which is well established. These matrices are then used in combination with Bloch’s theorem to determine the band structure of a photonic crystal from the solution of an eigenvalue problem. Computationally beneficial simplifications of the eigenproblem for symmetric lattices are derived, the structure of eigenvalue spectrum is classified, and, at long wavelengths, simple expressions for the positions of the band gaps are deduced. Closed form expressions for the reflection and transmission scattering matrices of finite stacks of gratings are established. A new, fundamental quantity, the reflection scattering matrix, in the limit in which the stack fills a half space, is derived and is used to deduce the effective dielectric constant of the crystal in the long wavelength limit.

  • Received 12 April 2001

DOI:https://doi.org/10.1103/PhysRevE.64.046603

©2001 American Physical Society

Authors & Affiliations

L. C. Botten

  • School of Mathematical Sciences, University of Technology, Sydney, New South Wales 2007, Australia

N. A. Nicorovici, R. C. McPhedran, C. Martijn de Sterke, and A. A. Asatryan

  • School of Physics, University of Sydney, New South Wales 2006, Australia

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Issue

Vol. 64, Iss. 4 — October 2001

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