Journal ArticleDOI
Photonic band structure and defects in one and two dimensions
TLDR
In this article, an experimental and numerical study of electromagnetic wave propagation in one-dimensional and two-dimensional (2D) systems composed of periodic arrays of dielectric scatterers is presented.Abstract:
We present an experimental and numerical study of electromagnetic wave propagation in one-dimensional (1D) and two-dimensional (2D) systems composed of periodic arrays of dielectric scatterers. We demonstrate that there are regions of frequency for which the waves are exponentially attenuated for all propagation directions. These regions correspond to band gaps in the calculated band structure, and such systems are termed photonic band-gap (PBG) structures. Removal of a single scatterer from a PBG structure produces a highly localized defect mode, for which the energy density decays exponentially away from the defect origin. Energy-density measurements of defect modes are presented. The experiments were conducted at 6–20 GHz, but we suggest that they may be scaled to infrared frequencies. Analytic and numerical solutions for the band structure and the defect states in 1D structures are derived. Applications of 2D PBG structures are briefly discussed.read more
Citations
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Microwave transmission through a two-dimensional, isotropic, left-handed metamaterial
TL;DR: In this paper, the authors present experimental data, numerical simulations, and analytical transfer-matrix calculations for a two-dimensional isotropic, left-handed metamaterial (LHM) at X-band microwave frequencies.
Journal ArticleDOI
Sound attenuation by sculpture
R. Martínez-Sala,José Luis Valero Sancho,J. V. Sánchez,V. Gómez,J. Llinares,Francisco Meseguer +5 more
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Emerging technologies for high performance infrared detectors
Chee Leong Tan,Hooman Mohseni +1 more
TL;DR: In this article, a review of the nanomaterial with suitable electronic and mechanical properties, such as two-dimensional material, graphene, transition metal dichalcogenides, and metal oxides, is presented.
Journal ArticleDOI
Coherent Control of Spontaneous Emission near a Photonic Band Edge: A Single-Atom Optical Memory Device
TL;DR: In this article, coherent control of spontaneous emission from a three-level atom with one resonant frequency near the edge of a photonic band gap was demonstrated, where spontaneous emission can be totally suppressed or strongly enhanced depending on the relative phase between the control and pump laser fields.
Journal ArticleDOI
Loop-wire medium for investigating plasmons at microwave frequencies
TL;DR: In this paper, numerical simulations and microwave measurements on a loop-wire structure that acts as an effective medium exhibiting a well-defined bulk plasma frequency in the microwave regime, with an effective negative dielectric function below this plasma frequency.
References
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Journal ArticleDOI
Inhibited Spontaneous Emission in Solid-State Physics and Electronics
TL;DR: If a three-dimensionally periodic dielectric structure has an electromagnetic band gap which overlaps the electronic band edge, then spontaneous emission can be rigorously forbidden.
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Photonic band structure: The face-centered-cubic case employing nonspherical atoms.
TL;DR: A practical, new, face-centered-cubic dielectric structure which simultaneously solves two of the outstanding problems in photonic band structure and lends itself readily to microfabrication on the scale of optical wavelengths.
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Electromagnetic Bloch waves at the surface of a photonic crystal
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Microwave propagation in two-dimensional dielectric lattices.
TL;DR: It is concluded that studies of this model scattering system allow the quantitative evaluation and testing of ideas regarding wave propagation and localization in strongly scattering media.
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Microwave localization by two-dimensional random scattering
TL;DR: In this article, the authors measured the electric field energy density for microwave radiation localized in essentially two-dimensional space by scattering from a random array of dielectric cylinders placed between a pair of parallel conducting plates.