Title

Near-field optical microscopy and spectroscopy of one-dimensional metallic photonic crystal slabs

Authors

Authors

S. Linden; N. Rau; U. Neuberth; A. Naber; M. Wegener; S. Pereira; K. Busch; A. Christ;J. Kuhl

Comments

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Abbreviated Journal Title

Phys. Rev. B

Keywords

FIBER PROBE; RESONANCE; Physics, Condensed Matter

Abstract

We use scanning near-field optical microscopy and spectroscopy to investigate the near field of one-dimensional periodic arrays of gold nanowires on top of a slab waveguide. The Bragg resonance of these one-dimensional metallic photonic crystal slabs can coincide with the particle-plasmon resonance of the metal nanowires, giving rise to an avoided crossing. We find a rich behavior when systematically varying the polarization of the incident light, the lattice constant, and the slab thickness. Numerical simulations of the transverse magnetic component of the near field qualitatively reproduce the experiment, in agreement with the expectation from the Bethe-Bouwkamp theory. Furthermore, these calculations give insight into those electromagnetic field components which cannot easily be measured.

Journal Title

Physical Review B

Volume

71

Issue/Number

24

Publication Date

1-1-2005

Document Type

Article

Language

English

First Page

6

WOS Identifier

WOS:000230276900045

ISSN

1098-0121

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