Electromagnetic surface waves at a metal 2D photonic crystal interface

Gaspar-Armenta, Jorge; Villa-Villa, Francisco

doi:10.1364/josab.30.002271

Cited by 7 publications

(4 citation statements)

References 30 publications

(30 reference statements)

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“…The use of metallic films in contact with photonic crystals to produce PC-metal interface modes with two-dimensional photonic crystals has been discussed in great detail in [15].…”

Section: The Pcwg-pcmm Systemmentioning

confidence: 99%

“…Using the PCWG mode as a source, they found the total power of the waveguide mode is transferred completely to the surface mode and vice versa along a distance called the full transmission length. Very recently the interface modes between a metal and a 2DPC were studied [15] and it was found that, for an appropriate metal thickness and under resonant conditions, a large fraction of the incident light can be transferred to the interface wave.…”

Section: Introductionmentioning

confidence: 99%

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Coupling of a 2D photonic crystal–metal surface wave to photonic crystal waveguide modes

Gaspar-Armenta¹,

Villa-Villa²

2014

J. Opt.

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Photonic crystal waveguides are being used for different applications in sensors, lasers, interferometers, and optical circuits. The process of coupling a light beam to a waveguide presents an inherent loss of energy, particularly for monomode waveguides. In this work, we study the coupling of an interface mode in a metal-2D photonic crystal (2DPC) and a photonic crystal waveguide mode. The coupling produces a hybrid mode that presents an avoided crossing inside the photonic crystal band gap. The avoided crossing produces a mini-stop band whose frequency width is larger when the waveguide is closer to the interface. Using the finite difference time domain method (FDTD) we show that the hybrid mode can be excited by incident light normal to the interface for an appropriate thickness of the metal. For an incident light beam with a given frequency such that two hybrid modes can be excited simultaneously, the energy goes from the interface to the waveguide and vice versa, oscillating with a period given by the coupling distance, as described by coupled mode theory (CMT).

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“…The use of metallic films in contact with photonic crystals to produce PC-metal interface modes with two-dimensional photonic crystals has been discussed in great detail in [15].…”

Section: The Pcwg-pcmm Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Coupling of a 2D photonic crystal–metal surface wave to photonic crystal waveguide modes

Gaspar-Armenta¹,

Villa-Villa²

2014

J. Opt.

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“…As for the interface PhC-metal, the role of modes of the second type related to a forbidden band was stressed in [3]. As a rule, publications concerning SPP excitation in PhCs consider only the second-type evanescent waves (see, for example, [4][5][6]). Contrastingly, in our previous works we considered the first variant for SPP excitation ( [7]).…”

Section: Introductionmentioning

confidence: 99%

Optimal conditions for surface wave excitation at a photonic crystal-metal interface

Kuznetsova¹,

Распопов²

2019

Laser Phys.

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The basic processes forming surface plasmon-polariton generation at a photonic crystal-metal interface are considered. Those are the emergence of a complicated mode structure in a crystal medium and energy exchange between modes in reflection from boundaries. The efficiency of surface plasmon-polariton excitation is studied at various parameters of the exciting wave. A particular attention is paid to the case where the wavevector of a reciprocal lattice is orthogonal to the exciting wave direction. In that case, an enhanced efficiency can be achieved. Optimal intensities of generated surface plasmon-polaritons are calculated for metals Ag, Au, Cu and Al in the wavelength interval of 400-1900 nm.

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“…Using the PCWG mode as a source, the authors found that the total power of the waveguide mode is transferred completely to the surface mode and vice versa, along a distance called the full transmission length. Quite recently, the interface modes between a metal and 2DPC were studied and the authors found that for an appropriate metal thickness and under resonant conditions, a large fraction of the incident light energy can be transferred to the SW [33].…”

Section: Introductionmentioning

confidence: 99%

Coupling of photonic crystal–photonic crystal interface and guided modes in two-dimensional heterostructures

Guel-Tapia

Villa-Villa

Gaspar-Armenta³

et al. 2015

Opt Rev

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In this work, we propose a two-dimensional photonic crystal-photonic crystal heterostructure that possesses the requirements for exciting an electromagnetic interface mode and investigate its interaction with photonic crystal waveguide modes. To study the interaction and coupling of both types of modes, the proper conditions to excite them are analyzed. Photonic crystal guided modes can appear in nearly any band gap when the photonic crystal has a line of defects within its lattice. Photonic crystal-photonic crystal surface modes can be excited at the junction of two different photonic crystals that share translation symmetry along the interface direction and have overlapped frequency band gaps. When this condition is met, dispersion relations of photonic crystal-photonic crystal surface modes will lie in the common region of both band gaps. Once the proper conditions are provided to excite these two modes, an interaction between them is possible. In the resulting calculations, a symmetric supercell and a plane wave basis are defined to numerically solve the wave equation.

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Electromagnetic surface waves at a metal 2D photonic crystal interface

Cited by 7 publications

References 30 publications

Coupling of a 2D photonic crystal–metal surface wave to photonic crystal waveguide modes

Coupling of a 2D photonic crystal–metal surface wave to photonic crystal waveguide modes

Optimal conditions for surface wave excitation at a photonic crystal-metal interface

Coupling of photonic crystal–photonic crystal interface and guided modes in two-dimensional heterostructures

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