Photonics Research, Volume. 1, Issue 4, 154(2013)

Finite difference time domain study of light transmission through multihole nanostructures in metallic film

Mehrdad Irannejad*, Mustafa Yavuz, and Bo Cui
Author Affiliations
  • Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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    Figures & Tables(9)
    Schematic diagram of the studied unit cells of infinite periodic arrays of (a) a single subwavelength hole and (b) dissimilar vertical chain holes with hole depths of 100 nm, structural period of P, and hole radii of R.
    FDTD calculated transmission spectrum of single-hole array of fixed hole depth of 100 nm, different hole radii in the range of 50–80 nm, and structural periodicity of (a) P=400 nm, (b) P=450 nm, (c) P=500 nm, and (d) P=550 nm. The incident EM field was polarized along y axis.
    Transmittance spectra of three similar hole chain array of fixed hole depth of 100 nm, hole radius of 50 nm, and different structural periodicities. The incident EM field was linearly polarized along the y axis.
    Transmittance spectra of three-hole chain arrays of fixed hole depth of 100 nm, different side-hole radii, and structural periodicities of (a) P=400 nm, (b) P=450 nm, (c) P=500 nm, and (d) P=550 nm. The incident EM field was linearly polarized along the y axis.
    Transmittance spectra of three-hole chain arrays of fixed hole depth of 100 nm, different side-hole radii, Rs, and structural periodicities of (a) P=400 nm, (b) P=450 nm, (c) P=500 nm, and (d) P=550 nm. The incident EM field was linearly polarized along the x axis.
    FDTD calculated electric profile of the (1,0) resonance mode of three-hole chain arrays at different incident light polarization and structural periodicities. The top row shows the electric profile of the three-hole chain array of periods of (a) 400 nm, (b) 450 nm, (c) 500 nm, and (d) 550 nm under illumination of an x-polarized EM field. The bottom row is for a y-polarized incident EM field and periods of (e) 400 nm, (f) 450 nm, (g) 500 nm, and (h) 550 nm.
    • Table 1. Resonance Wavelength Position of a Square Single-Hole Array Perforated on the Silica-Supported Gold Film with Hole Radius of 50 nm, Hole Depth of 100 nm, and Different Structural Periodicitiesa

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      Table 1. Resonance Wavelength Position of a Square Single-Hole Array Perforated on the Silica-Supported Gold Film with Hole Radius of 50 nm, Hole Depth of 100 nm, and Different Structural Periodicitiesa

       Resonance Wavelength (nm)
        FDTDTheory (Eq. 2)
        Air/FilmFilm/SubAir/FilmFilm/Sub
      PeriodGold Transmission0,11,10,11,10,11,10,11,1
      400480370690593417295662468
      450480363746611469332745527
      500480581810638521368827585
      550480615371877669573405910643
    • Table 2. Optical Transmission and Transmittance Enhancement of the (1,0) Peak of the Three-Hole Chain Array Relative to the Single-Hole Array at Different Structural Periods, Rs=25nm, R=Rc=80nm, and Different Incident EM Field Polarization

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      Table 2. Optical Transmission and Transmittance Enhancement of the (1,0) Peak of the Three-Hole Chain Array Relative to the Single-Hole Array at Different Structural Periods, Rs=25nm, R=Rc=80nm, and Different Incident EM Field Polarization

        TchainEnhancement TchainEnhancement
      PeriodTsingley-axis polarizedy-axis polarizedTsinglex-axis polarizedx-axis polarized
      4000.0830.121.440.0830.192.29
      4500.0580.0851.460.0580.132.24
      5000.0340.0521.530.0340.0772.26
      5500.0170.0251.470.0170.0412.41
    • Table 3. FWHM of the (1,0) Resonance Mode of Three-Hole Chain Arrays as a Function of Vertical Distance between Holes (y) at Different Structural Periodsa

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      Table 3. FWHM of the (1,0) Resonance Mode of Three-Hole Chain Arrays as a Function of Vertical Distance between Holes (y) at Different Structural Periodsa

      PeriodRb(nm)y(nm)FWHM (nm)Rb(nm)y(nm)FWHM (nm)
      4002523.3355506.67175
      4502531.67365511.6792
      501575608.33152
      655273
      5002540306513.3385
      5023.33417010121
      552048756.67195
      6016.676280
      5502548.33296521.6740
      5031.67337018.3350
      5528.3335751572
      6025378011.67101
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    Mehrdad Irannejad, Mustafa Yavuz, Bo Cui. Finite difference time domain study of light transmission through multihole nanostructures in metallic film[J]. Photonics Research, 2013, 1(4): 154

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    Paper Information

    Category: Optics at Surfaces

    Received: Aug. 20, 2013

    Accepted: Oct. 10, 2013

    Published Online: Dec. 26, 2013

    The Author Email: Mehrdad Irannejad (mehrdad.irannejad@uwaterloo.ca)

    DOI:10.1364/PRJ.1.000154

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