Theory of extraordinary light transmission through arrays of subwavelength slits

B. Sturman, E. Podivilov, M.V. Gorkunov

    Research output: Contribution to journalArticle

    66 Citations (Scopus)

    Abstract

    We propose a self-consistent theory of the extraordinary light transmission through periodic arrays of subwavelength holes in metals. Its basis is an expansion of the light fields in terms of exact eigenmodes- propagating, evanescent, and anomalous-investigated in our recent paper and matching at the interfaces using the exact boundary conditions. An excellent convergence of this expansion has allowed us to decompose the anomalous transmission phenomenon into elementary parts and to investigate the characteristic parametric dependences. Transmission properties of a single interface play a key role in our theory in the subwavelength range. They include the coefficient of energy transmission into the propagating mode and the phases of the reflected and transmitted waves. These key parameters possess remarkable resonant dependences on the wavelength of light; they are sensitive to the size of the holes and rather insensitive to weak losses. The surfaceplasmon- related features of the above characteristics are established. Transmission properties of a slab are expressed by the single-interface parameters, the phase incursion for the propagating mode, and the propagating losses.
    Original languageEnglish
    JournalPhysical Review B
    Volume77
    Issue number7
    DOIs
    Publication statusPublished - Feb 2008

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    light transmission
    Light transmission
    slits
    expansion
    slabs
    Metals
    Boundary conditions
    boundary conditions
    coefficients
    metals
    energy

    Keywords

    • extraordinary light transmission
    • ELT theory
    • arrays
    • subwavelengths
    • metals
    • eigenmodes

    Cite this

    Sturman, B. ; Podivilov, E. ; Gorkunov, M.V. / Theory of extraordinary light transmission through arrays of subwavelength slits. In: Physical Review B. 2008 ; Vol. 77, No. 7.
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    abstract = "We propose a self-consistent theory of the extraordinary light transmission through periodic arrays of subwavelength holes in metals. Its basis is an expansion of the light fields in terms of exact eigenmodes- propagating, evanescent, and anomalous-investigated in our recent paper and matching at the interfaces using the exact boundary conditions. An excellent convergence of this expansion has allowed us to decompose the anomalous transmission phenomenon into elementary parts and to investigate the characteristic parametric dependences. Transmission properties of a single interface play a key role in our theory in the subwavelength range. They include the coefficient of energy transmission into the propagating mode and the phases of the reflected and transmitted waves. These key parameters possess remarkable resonant dependences on the wavelength of light; they are sensitive to the size of the holes and rather insensitive to weak losses. The surfaceplasmon- related features of the above characteristics are established. Transmission properties of a slab are expressed by the single-interface parameters, the phase incursion for the propagating mode, and the propagating losses.",
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    Theory of extraordinary light transmission through arrays of subwavelength slits. / Sturman, B.; Podivilov, E.; Gorkunov, M.V.

    In: Physical Review B, Vol. 77, No. 7, 02.2008.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Theory of extraordinary light transmission through arrays of subwavelength slits

    AU - Sturman, B.

    AU - Podivilov, E.

    AU - Gorkunov, M.V.

    PY - 2008/2

    Y1 - 2008/2

    N2 - We propose a self-consistent theory of the extraordinary light transmission through periodic arrays of subwavelength holes in metals. Its basis is an expansion of the light fields in terms of exact eigenmodes- propagating, evanescent, and anomalous-investigated in our recent paper and matching at the interfaces using the exact boundary conditions. An excellent convergence of this expansion has allowed us to decompose the anomalous transmission phenomenon into elementary parts and to investigate the characteristic parametric dependences. Transmission properties of a single interface play a key role in our theory in the subwavelength range. They include the coefficient of energy transmission into the propagating mode and the phases of the reflected and transmitted waves. These key parameters possess remarkable resonant dependences on the wavelength of light; they are sensitive to the size of the holes and rather insensitive to weak losses. The surfaceplasmon- related features of the above characteristics are established. Transmission properties of a slab are expressed by the single-interface parameters, the phase incursion for the propagating mode, and the propagating losses.

    AB - We propose a self-consistent theory of the extraordinary light transmission through periodic arrays of subwavelength holes in metals. Its basis is an expansion of the light fields in terms of exact eigenmodes- propagating, evanescent, and anomalous-investigated in our recent paper and matching at the interfaces using the exact boundary conditions. An excellent convergence of this expansion has allowed us to decompose the anomalous transmission phenomenon into elementary parts and to investigate the characteristic parametric dependences. Transmission properties of a single interface play a key role in our theory in the subwavelength range. They include the coefficient of energy transmission into the propagating mode and the phases of the reflected and transmitted waves. These key parameters possess remarkable resonant dependences on the wavelength of light; they are sensitive to the size of the holes and rather insensitive to weak losses. The surfaceplasmon- related features of the above characteristics are established. Transmission properties of a slab are expressed by the single-interface parameters, the phase incursion for the propagating mode, and the propagating losses.

    KW - extraordinary light transmission

    KW - ELT theory

    KW - arrays

    KW - subwavelengths

    KW - metals

    KW - eigenmodes

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    DO - 10.1103/PhysRevB.77.075106

    M3 - Article

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    JO - Physical Review B: Condensed Matter and Materials Physics

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