Comparison of gold and silver dispersion laws suitable for FDTD simulations

Vial, Alexandre; Laroche, Thierry

doi:10.1007/s00340-008-3202-4

Cited by 123 publications

(62 citation statements)

References 21 publications

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“…Previous work [7] explains this physical mechanism in detail, and a similar result for a silver film with nanoslits was predicted by Catrysse and Fan [9]. In particular, we fabricated subwavelength wide slits on Al because it has a higher plasma frequency than silver or gold, so consequently has lower loss in the shorter wavelength region [10], [16]. The use of Al enabled us to clearly observe the absorption dip in the SP phenomenon.…”

Section: Discussionsupporting

confidence: 63%

Polarization Filters for Visible Light Consisting of Subwavelength Slits in an Aluminum Film

Inoue

Nomura

Miura

et al. 2012

J. Lightwave Technol.

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We fabricated arrays of subwavelength slits in an Al film and measured their optical properties in the visible light region. Al crossbeams were installed as supports between the Al lines to enable us to precisely fabricate the nanoslits. Visible light polarized parallel to the slits transmits at shorter wavelengths, similar to that of a wire grid array at infrared wavelengths. On the other hand, for light polarized perpendicular to the slits, the transmission is at longer wavelengths and significant absorption takes place at shorter wavelengths due to Fano-type interference. This absorption in the visible wavelength region is due to the precise nanofabrication process and the high plasma frequency of Al. These results show that Al nanoslits can be used as polarization filters in the visible wavelength region.

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Section: Discussionsupporting

confidence: 63%

Polarization Filters for Visible Light Consisting of Subwavelength Slits in an Aluminum Film

Inoue

Nomura

Miura

et al. 2012

J. Lightwave Technol.

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“…15(e). This wave should not be identified as the middle precursor noticed in some studies [24]; however, it can easily be checked to be related to the input pulse configuration. For this double truncated pulse we chose and .…”

Section: A Dynamical Evolution and Peak Decaymentioning

confidence: 97%

“…The values for the different parameters of the Drude model as per [24], [25] can be consulted in Table I for the three materials used in this paper, silver, gold, and aluminum.…”

Section: B Dielectric Modelmentioning

confidence: 99%

“…The dispersive media consisted of three metals for the terahertz band (aluminum, silver, and gold) characterized by the Drude model [24], [25], and a Lorentz medium for the picohertz frequencies [18]. For the metals, the Drude model implies a nonperfect conductor which can better explain the transmission of signal through this kind of material.…”

Section: Introductionmentioning

confidence: 99%

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Temporal and Frequency Evolution of Brillouin and Sommerfeld Precursors Through Dispersive Media in THz-IR Bands

Alejos

Dawood

Falcone

2012

IEEE Trans. Antennas Propagat.

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The evolution of rectangular and Gaussian pulses through dispersive media is analyzed using a frequency-domain technique, valid for any kind of modulated input signal propagated through any dispersive medium. Three different metals-aluminum, silver, and gold-are considered using the Drude dielectric model to characterize them, at operating frequencies of 1 and 100 THz. A Lorentz model was also tested in the picohertz frequency band. The frequency-domain approach facilitated to separate the different components of the signal after propagating through the dispersive medium: carrier, Brillouin and Sommerfeld fields. In combination with the electric-field intensity plots, the dynamical evolution related to Brillouin and Sommerfeld precursor has shown a different trend in the chosen media, undergoing also an opposite effect on the effective frequency deviation. The case of a finite thickness propagation medium is compared to half-space model showing differences in the precursor evolution behavior. Finally, with Drude model material parameters at an operating frequency of 100 THz, we demonstrated that the impinging wave is coupled through surface plasmon polaritons which are capable of coupling in the output facet of the finite thickness slab to radiating waves.Index Terms-Dielectric materials, dispersive media, electromagnetic (EM) propagation in dispersive media, frequency domain analysis, metals, plasmons, terahertz radiation.

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“…From the computational perspective, DCP model is advantageous over DL model since the former requires only less number of terms. Since then, DCP model has been used to represent the electric permittivity of metals such as gold and others with good accuracy [10].…”

Section: Introductionmentioning

confidence: 99%

PLRC and Ade Implementations of Drude-Critical Point Dispersive Model for the FDTD Method

Chun¹,

Kim²,

Kim³

et al. 2013

PIER

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Abstract-We describe the implementations of Drude-critical point model for describing dispersive media into finite difference time domain algorithm using piecewise-linear recursive-convolution and auxiliary differential equation methods. The advantages, accuracy and stability of both implementations are analyzed in detail. Both implementations were applied in studying the transmittance and reflectance of thin metal films, and excellent agreement is observed between analytical and numerical results.

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Comparison of gold and silver dispersion laws suitable for FDTD simulations

Cited by 123 publications

References 21 publications

Polarization Filters for Visible Light Consisting of Subwavelength Slits in an Aluminum Film

Polarization Filters for Visible Light Consisting of Subwavelength Slits in an Aluminum Film

Temporal and Frequency Evolution of Brillouin and Sommerfeld Precursors Through Dispersive Media in THz-IR Bands

PLRC and Ade Implementations of Drude-Critical Point Dispersive Model for the FDTD Method

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