Resonant excitation of volume and surface fields on complex electrodynamic surfaces

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Abstract

Analytical, numerical, and experimental studies of volume and surface-field coupling in planar metal periodic surface lattice (PSL) structures superimposed on dielectric substrates with a metallic backing (PSLDM) are presented. We show the formation of frequency-locked PSLDM-coupled eigenmodes and unlocked surface-field resonances (PSL without substrate). These experimental observations are in excellent agreement with theoretical and numerical predictions. For the first time, the derivation of a field coupling coefficient α is demonstrated. By comparing theoretical and numerical dispersions, we obtain α. Detailed analysis of possible scattering mechanisms and dispersive behavior in subwavelength "effective metadielectric" PSLs is shown. The theory and measurements presented in this paper are applicable over a broad frequency range from optical frequencies to THz and are fundamental to the innovation of high-power short-wavelength sources, solar cells, and alternative subwavelength absorbers.

LanguageEnglish
Article number034034
Number of pages8
JournalPhysical Review Applied
Volume11
Issue number3
DOIs
Publication statusPublished - 14 Mar 2019

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Electrodynamics
electrodynamics
Excitation
excitation
Substrate
Numerical Dispersion
Lattice Structure
backups
Absorber
Solar Cells
Substrates
coupling coefficients
Dispersions
High Power
Numerical Study
Experimental Study
absorbers
Solar cells
derivation
Innovation

Keywords

  • mode coupling
  • mode coupling theory (MCT)
  • electrodynamic surfaces
  • metadielectric
  • metamaterials
  • electromagnetic fields
  • overmoded sources
  • high power microwaves
  • novel radiation absorbers
  • THz generation
  • millimetre wave
  • microwave coupling
  • microwave cavities
  • coupled eigenmodes
  • periodic surface lattice

Cite this

@article{abca4ec1b6bb497a9a7fd908980365aa,
title = "Resonant excitation of volume and surface fields on complex electrodynamic surfaces",
abstract = "Analytical, numerical, and experimental studies of volume and surface-field coupling in planar metal periodic surface lattice (PSL) structures superimposed on dielectric substrates with a metallic backing (PSLDM) are presented. We show the formation of frequency-locked PSLDM-coupled eigenmodes and unlocked surface-field resonances (PSL without substrate). These experimental observations are in excellent agreement with theoretical and numerical predictions. For the first time, the derivation of a field coupling coefficient α is demonstrated. By comparing theoretical and numerical dispersions, we obtain α. Detailed analysis of possible scattering mechanisms and dispersive behavior in subwavelength {"}effective metadielectric{"} PSLs is shown. The theory and measurements presented in this paper are applicable over a broad frequency range from optical frequencies to THz and are fundamental to the innovation of high-power short-wavelength sources, solar cells, and alternative subwavelength absorbers.",
keywords = "mode coupling, mode coupling theory (MCT), electrodynamic surfaces, metadielectric, metamaterials, electromagnetic fields, overmoded sources, high power microwaves, novel radiation absorbers, THz generation, millimetre wave, microwave coupling, microwave cavities, coupled eigenmodes, periodic surface lattice",
author = "MacLachlan, {A. J.} and Robertson, {C. W.} and Konoplev, {I. V.} and Cross, {A. W.} and Phelps, {A. D. R.} and K. Ronald",
year = "2019",
month = "3",
day = "14",
doi = "10.1103/PhysRevApplied.11.034034",
language = "English",
volume = "11",
journal = "Physical Review Applied",
issn = "2331-7019",
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}

TY - JOUR

T1 - Resonant excitation of volume and surface fields on complex electrodynamic surfaces

AU - MacLachlan, A. J.

AU - Robertson, C. W.

AU - Konoplev, I. V.

AU - Cross, A. W.

AU - Phelps, A. D. R.

AU - Ronald, K.

PY - 2019/3/14

Y1 - 2019/3/14

N2 - Analytical, numerical, and experimental studies of volume and surface-field coupling in planar metal periodic surface lattice (PSL) structures superimposed on dielectric substrates with a metallic backing (PSLDM) are presented. We show the formation of frequency-locked PSLDM-coupled eigenmodes and unlocked surface-field resonances (PSL without substrate). These experimental observations are in excellent agreement with theoretical and numerical predictions. For the first time, the derivation of a field coupling coefficient α is demonstrated. By comparing theoretical and numerical dispersions, we obtain α. Detailed analysis of possible scattering mechanisms and dispersive behavior in subwavelength "effective metadielectric" PSLs is shown. The theory and measurements presented in this paper are applicable over a broad frequency range from optical frequencies to THz and are fundamental to the innovation of high-power short-wavelength sources, solar cells, and alternative subwavelength absorbers.

AB - Analytical, numerical, and experimental studies of volume and surface-field coupling in planar metal periodic surface lattice (PSL) structures superimposed on dielectric substrates with a metallic backing (PSLDM) are presented. We show the formation of frequency-locked PSLDM-coupled eigenmodes and unlocked surface-field resonances (PSL without substrate). These experimental observations are in excellent agreement with theoretical and numerical predictions. For the first time, the derivation of a field coupling coefficient α is demonstrated. By comparing theoretical and numerical dispersions, we obtain α. Detailed analysis of possible scattering mechanisms and dispersive behavior in subwavelength "effective metadielectric" PSLs is shown. The theory and measurements presented in this paper are applicable over a broad frequency range from optical frequencies to THz and are fundamental to the innovation of high-power short-wavelength sources, solar cells, and alternative subwavelength absorbers.

KW - mode coupling

KW - mode coupling theory (MCT)

KW - electrodynamic surfaces

KW - metadielectric

KW - metamaterials

KW - electromagnetic fields

KW - overmoded sources

KW - high power microwaves

KW - novel radiation absorbers

KW - THz generation

KW - millimetre wave

KW - microwave coupling

KW - microwave cavities

KW - coupled eigenmodes

KW - periodic surface lattice

U2 - 10.1103/PhysRevApplied.11.034034

DO - 10.1103/PhysRevApplied.11.034034

M3 - Article

VL - 11

JO - Physical Review Applied

T2 - Physical Review Applied

JF - Physical Review Applied

SN - 2331-7019

IS - 3

M1 - 034034

ER -