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

    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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