Self-collimation phenomena of surface waves in structured perfect electric conductors and metal surfaces

Oh, Suhk Kun; Lee, Sun-Goo; Kim, Jae‐Eun; Park, Hae Yong

doi:10.1364/oe.15.001205

Cited by 20 publications

(17 citation statements)

References 16 publications

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“…The phenomenon has also been applied to surface waves [52] including spoof surface plasmons [53,54]. It follows from the theory that beams can be made to flow along arbitrary paths inside these lattices by spatially varying the orientation of the unit cells [25,55,56].…”

Section: Spatially Variant Photonic Crystalsmentioning

confidence: 99%

Spatially variant periodic structures in electromagnetics

Rumpf

Pazos

Digaum

et al. 2015

Phil. Trans. R. Soc. A.

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Section: Spatially Variant Photonic Crystalsmentioning

confidence: 99%

Spatially variant periodic structures in electromagnetics

Rumpf

Pazos

Digaum

et al. 2015

Phil. Trans. R. Soc. A.

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“…The periodically structured PEC surface behaves effectively like a planar metal surface at optical frequencies showing tightly bound EM modes for lower frequencies and, more importantly, propagation properties of spoof SPPs can be controlled by engineering the geometric parameters [30][31][32][33][34]. Therefore, spoof SPPs can be manipulated to imitate the EM behavior of SPPs such as guiding [34][35][36][37][38][39][40], localization [39,[41][42][43], and focusing [33,37,44,45]. Remarkably, some structured metal surfaces exhibit a spoof SPP band gap, where no surface guided modes are allowed.…”

Section: Introductionmentioning

confidence: 99%

Subwavelength localization and toroidal dipole moment of spoof surface plasmon polaritons

Kim

et al. 2015

Phys. Rev. B

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We experimentally and theoretically demonstrate subwavelength scale localization of spoof surface plasmon polaritons at a point defect in a two-dimensional groove metal array. An analytical expression for dispersion relation of spoof surface plasmon polaritons substantiates the existence of a band gap where a defect mode can be introduced. A waveguide coupling method allows us to excite localized spoof surface plasmon polariton modes and measure their resonance frequencies. Numerical calculations confirm that localized modes can have a very small modal volume and a high Q factor both of which are essential in enhancing light-matter interactions. Interestingly, we find that the localized spoof surface plasmon polariton has a significant toroidal dipole moment, which is responsible for the high Q factor, as well as an electric quadrupole moment. In addition, the dispersion properties of spoof surface plasmon polaritons are analyzed using a modal expansion method and numerical calculations.

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“…It has also been shown theoretically and experimentally that nanostructured metals consisting on PEC with periodic twodimensional arrays of holes, can support surface modes that are exclusively associated to the structure of the system [10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 98%

Optical Response of a Perfect Conductor Waveguide That Behaves as a Photonic Crystal

Mendoza-Suárez¹,

Pérez-Aguilar²,

Villa-Villa³

2011

PIER

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Abstract-In this work, we consider a waveguide composed of two periodic, perfectly conducting, one-dimensional rough surfaces. This periodic system has a band structure similar in some aspects to a one-dimensional photonic crystal. However, our system has some additional interesting features. We calculate the band structure and the reflectivity of a corresponding finite waveguide. We found that the variation of the roughness amplitude and the relative phases allow to control at a certain degree the band structure of the system. Particularly, wide gaps can be obtained. It is even possible to obtain discrete modes for some frequency range and then the periodic waveguide acts as an unimodal filter. The system considered constitutes itself a photonic crystal whose band structure corresponds in many ways to a conventional photonic crystal but using just a single material. The key properties of this system are that it really constitutes a waveguide whose optical response is similar to that of a one-dimensional photonic crystal.

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Self-collimation phenomena of surface waves in structured perfect electric conductors and metal surfaces

Cited by 20 publications

References 16 publications

Spatially variant periodic structures in electromagnetics

Spatially variant periodic structures in electromagnetics

Subwavelength localization and toroidal dipole moment of spoof surface plasmon polaritons

Optical Response of a Perfect Conductor Waveguide That Behaves as a Photonic Crystal

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