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Analysis of band structure and electric field in twodimensional surface plasmon-polariton crystals

E. VINŢELER1,* , S. AŞTILEAN1

Affiliation

  1. Physics Department, Univ. Babeş-Bolyai, M. Kogalniceanu 1, 400084 Cluj-Napoca, Romania

Abstract

The behavior of electric field in two-dimensional surface-plasmon polaritonic crystals is presented. First the photonic band structure for surface plasmon-polariton propagating across the square lattice of metal (silver) hemi-ellipsoids is calculated by using the two-dimensional reduced Rayleigh equation. Then we calculated the normalized electric field Ez at middistance between hemi-ellipsoids for two high-symmetry points X and M in the first Brillouin zone and found out the regions of highest electric field, which are of great interest for understanding the electromagnetic mechanism in surface-enhanced Raman scattering..

Keywords

Photonic crystals, Photonic band gap, Surface plasmons, Reduced Rayleigh equation.

Submitted at: Nov. 15, 2006
Accepted at: March 15, 2007

Citation

E. VINŢELER, S. AŞTILEAN, Analysis of band structure and electric field in twodimensional surface plasmon-polariton crystals, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 3, pp. 702-707 (2007)