Electric Field Confinement and Enhancement in a Silver Film Fabry-Perot Interferometer

    Authors

    F. Yu; H. N. Wang;S. L. Zou

    Abbreviated Journal Title

    J. Phys. Chem. A

    Keywords

    RAMAN-SCATTERING; GOLD NANOPARTICLES; QUANTUM DOTS; CDTE NANOCRYSTALS; WAVE-GUIDE; SURFACE; FLUORESCENCE; MOLECULES; PHOTOLUMINESCENCE; SPECTROSCOPY; Chemistry, Physical; Physics, Atomic, Molecular & Chemical

    Abstract

    Using the discrete dipole approximation method and exact analytical solutions, we demonstrate that an incident electromagnetic wave can be confined and enhanced between two silver layers due to the Fabry-Perot effect. The enhanced electric field between the two layers depends on the distance between the two layers and each layer's thickness. An enhanced electric field, |E|(2), with an enhancement factor of 50 was obtained at distances 100 nm above the surface. The resonance wavelength increases linearly with the distance between the two layers and varies with their thicknesses. Reduced scattering and enhanced absorption efficiencies of the interferometer at resonance wavelength were observed. The effect demonstrated here could be applied for studying both enhanced fluorescence and nanolasers.

    Journal Title

    Journal of Physical Chemistry A

    Volume

    113

    Issue/Number

    16

    Publication Date

    1-1-2009

    Document Type

    Article

    Language

    English

    First Page

    4217

    Last Page

    4222

    WOS Identifier

    WOS:000265383200064

    ISSN

    1089-5639

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