Determination of Electric-Field, Magnetic-Field, and Electric-Current Distributions of Infrared Optical Antennas: A Near-Field Optical Vector Network Analyzer

    Authors

    R. L. Olmon; M. Rang; P. M. Krenz; B. A. Lail; L. V. Saraf; G. D. Boreman;M. B. Raschke

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    Phys. Rev. Lett.

    Keywords

    LIGHT; MODES; Physics, Multidisciplinary

    Abstract

    In addition to the electric field E(r), the associated magnetic field H(r) and current density J(r) characterize any electromagnetic device, providing insight into antenna coupling and mutual impedance. We demonstrate the optical analogue of the radio frequency vector network analyzer implemented in interferometric homodyne scattering-type scanning near-field optical microscopy for obtaining E(r), H(r), and J(r). The approach is generally applicable and demonstrated for the case of a linear coupled-dipole antenna in the midinfrared spectral region. The determination of the underlying 3D vector electric near-field distribution E(r) with nanometer spatial resolution and full phase and amplitude information is enabled by the design of probe tips with selectivity with respect to E(parallel to) and E(perpendicular to) fabricated by focused ion-beam milling and nano-chemical-vapor-deposition methods.

    Journal Title

    Physical Review Letters

    Volume

    105

    Issue/Number

    16

    Publication Date

    1-1-2010

    Document Type

    Article

    Language

    English

    First Page

    4

    WOS Identifier

    WOS:000283056100010

    ISSN

    0031-9007

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