Band Gap Formation and Multiple Scattering in Photonic Quasicrystals with a Penrose-Type Lattice

Villa, Alessandro Della; Enoch, Stefan; Tayeb, Gérard; Pierro, V.; Galdi, Vincenzo; Capolino, Filippo

doi:10.1103/physrevlett.94.183903

Cited by 104 publications

(21 citation statements)

References 29 publications

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“…One-dimensional and two-dimensional photonic quasicrystal structures are intriguing since they have manifested exotic properties for a number of photonic applications such as negative refraction 20 , waveguiding 21 , imaging 22–25 , and optical modes 26 . These properties primarily rely on the presence of multiple band gaps and multi-frequency characters 27–34 , resulting from a large number of reciprocal vectors presented in the reciprocal lattice space 11,20,35,36 . A prevailing method in quasicrystal study originates from the implementation of quasicrystal metasurfaces (QCMs) that may replace bulky devices with ultrathin elements 17 .…”

Section: Introductionmentioning

confidence: 99%

Near-field surface plasmons on quasicrystal metasurfaces

Yang

Zhang

et al. 2016

Sci Rep

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Excitation and manipulation of surface plasmons (SPs) are essential in developing cutting-edge plasmonic devices for medical diagnostics, biochemical spectroscopy and communications. The most common approach involves designing an array of periodic slits or grating apertures that enables coupling of the incident light to the SP modes. In recent years, plasmonic resonances, including extraordinary optical transmission through periodic arrays, quasicrystals and random aperture arrays, have been investigated in the free space. However, most of the studies have been limited to the far field detection of the transmission resonance. Here, we perform near-field measurements of the SPs on quasicrystal metasurfaces. We discover that the reciprocal vector determines the propagation modes of the SPs in the quasicrystal lattice which can be well explained by the quasi-momentum conservation rule. Our findings demonstrate vast potential in developing plasmonic metasurfaces with unique device functionalities that are controlled by the propagation modes of the SPs in quasicrystals.

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Section: Introductionmentioning

confidence: 99%

Near-field surface plasmons on quasicrystal metasurfaces

Yang

Zhang

et al. 2016

Sci Rep

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“…The structural complexity of PQCs is measured by their spatial Fourier spectra, which are discrete (singular) for quasiperiodic systems, singular-continuous, or absolutely continuous for pseudorandom structures of increasing complexity. Two-dimensional (2D) quasiperiodic lattices possessing high rotational symmetries have been largely studied in literature [21-26]. The experimental realization of 2D PQCs is a hard fabrication challenge.…”

Section: Introductionmentioning

confidence: 99%

Novel hybrid organic/inorganic 2D quasiperiodic PC: from diffraction pattern to vertical light extraction

et al. 2011

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Recently, important efforts have been dedicated to the realization of a fascinating class of new photonic materials or metamaterials, known as photonic quasicrystals (PQCs), in which the lack of the translational symmetry is compensated by rotational symmetries not achievable by the conventional periodic crystals. As ever, more advanced functionality is demanded and one strategy is the introduction of non-linear and/or active functionality in photonic materials. In this view, core/shell nanorods (NRs) are a promising active material for light-emitting applications. In this article a two-dimensional (2D) hybrid a 2D octagonal PQC which consists of air rods in an organic/inorganic nanocomposite is proposed and experimentally demonstrated. The nanocomposite was prepared by incorporating CdSe/CdS core/shell NRs into a polymer matrix. The PQC was realized by electron beam lithography (EBL) technique. Scanning electron microscopy, far field diffraction and spectra measurements are used to characterize the experimental structure. The vertical extraction of the light, by the coupling of the modes guided by the PQC slab to the free radiation via Bragg scattering, consists of a narrow red emissions band at 690 nm with a full width at half-maximum (FWHM) of 21.5 nm. The original characteristics of hybrid materials based on polymers and colloidal NRs, able to combine the unique optical properties of the inorganic moiety with the processability of the host matrix, are extremely appealing in view of their technological impact on the development of new high performing optical devices such as organic light-emitting diodes, ultra-low threshold lasers, and non-linear devices.PACS: 81.07.Pr Organic-inorganic hybrid nanostructures, 81.16.-c Methods of nanofabrication and processing, 42.70.Qs Photonic band-gap materials.

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“…8 Dielectrics arranged according to quasiperiodic geometries such as octagonal (8-fold), decagonal (10-fold), and dodecagonal (12-fold) are shown to have a two-dimensional PBG. [9][10][11][12] Penrose-tiled (10-fold rotational symmetry) PQC's were the most studied structures among those presented above, and there were numerous studies about the mechanism of formation of a PBG, 13 optical properties, diffraction patterns, 9 and multiple scattering 11 for this geometry. An organic laser based on Penrose-tiled PQC's was also demonstrated.…”

Section: Introductionmentioning

confidence: 99%

Isotropic properties of the photonic band gap in quasicrystals with low-index contrast

et al. 2011

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We report on the formation and development of the photonic band gap in two-dimensional 8-, 10-, and 12-fold symmetry quasicrystalline lattices of low-index contrast. Finite-size structures made of dielectric cylindrical rods were studied and measured in the microwave region, and their properties were compared with a conventional hexagonal crystal. Band-gap characteristics were investigated by changing the direction of propagation of the incident beam inside the crystal. Various angles of incidence from 0 • to 30 • were used to investigate the isotropic nature of the band gap. The arbitrarily high rotational symmetry of aperiodically ordered structures could be practically exploited to manufacture isotropic band-gap materials, which are perfectly suitable for hosting waveguides or cavities.

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Band Gap Formation and Multiple Scattering in Photonic Quasicrystals with a Penrose-Type Lattice

Cited by 104 publications

References 29 publications

Near-field surface plasmons on quasicrystal metasurfaces

Near-field surface plasmons on quasicrystal metasurfaces

Novel hybrid organic/inorganic 2D quasiperiodic PC: from diffraction pattern to vertical light extraction

Isotropic properties of the photonic band gap in quasicrystals with low-index contrast

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