Optical excitation of surface plasma waves in layered media

Kovacs, G. J.; Scott, G. D.

doi:10.1103/physrevb.16.1297

Cited by 112 publications

(34 citation statements)

References 14 publications

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“…It is also of interest to note that the amplitude transmission at the Al-air [±1, 0] SP mode revealed only a minor change with the overlayer thickness, with a minimum around a level of 0.25. This is because that the dielectric layer is nearly transparent at terahertz frequencies and the damping term in this layer can be negligible (ε 2 = 0) [4,38,54].…”

Section: Dielectric Overlayer Effectmentioning

confidence: 99%

Resonant terahertz transmission in plasmonic arrays of subwavelength holes

Zhang

2008

Eur. Phys. J. Appl. Phys.

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Abstract.A review of transmission properties of two-dimensional plasmonic structures in the terahertz regime is presented. Resonant terahertz transmission was demonstrated in arrays of subwavelength holes patterned on both metals and semiconductors. The effects of hole shape, hole dimensions, dielectric function of metals, array film thickness, and a dielectric overlayer were investigated by the state-of-the-art terahertz spectroscopy modalities. Extraordinary terahertz transmission was demonstrated in arrays of subwavelength holes made even from Pb, a generally poor metal, and having optically thin thicknesses less than one-third of a skin depth. We also observed a direct transition of a surface plasmon resonance from a photonic crystal minimum in a photo-doped semiconductor array. According to the Fano model, transmission properties of such plasmonic arrays are characterized by two essential contributions: resonant excitation of surface plasmons and nonresonant direct transmission. Plasmonic structures will find fascinating applications in terahertz imaging, biomedical sensing, subwavelength terahertz spectroscopy, and integrated terahertz devices. PACS

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Section: Dielectric Overlayer Effectmentioning

confidence: 99%

Resonant terahertz transmission in plasmonic arrays of subwavelength holes

Zhang

2008

Eur. Phys. J. Appl. Phys.

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“…have been published. The dispersion relations are presented for surface plasma oscillations in thin lossy metal ÿlms of ÿnite width [8][9][10], wave propagation along nanowires [11,12], and along single-and multiple-ÿlm layered metal structures [13,14]. Propagating modes along plasma waveguides are represented by transmission line models.…”

Section: Plasma Waves and Surface Plasmon Waveguidesmentioning

confidence: 99%

Surface plasmon waves in nanoelectronic circuits

Csurgay

Porod

2004

Circuit Theory & Apps

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SUMMARYPlasma dynamics in nanoscale metal-dielectric structures is reviewed, and circuit models for potential plasma wave nanodevices and circuits are developed. Circuit representations for surface-plasmon waveguides, nanoantennas, and for surface plasmon generators based on attenuated total re ection (ATR), are presented. In metal-insulator-metal (MIM) structures tunnelling also excites surface plasmon waves, and the equivalent circuit introduced in this paper helps the design of circuits exploiting surface plasmon waves. These nanoelectronic circuits might have an impact on the future of terahertz and infrared electronics.

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“…Comparison of (2) and (8) shows that while the fundamental SPP modes are the principal solutions of the latter equation at m=0, an infinite countable set of complex modes co-exists even in the lossless structure. Similar property of the eigenmode spectrum is known for the magnetostatic waves existing in the frequency range of negative effective permeability of thin YIG films [24], [25].…”

Section: Asymptotic Analysis Of the Dispersion Equationmentioning

confidence: 99%

“…Although the basic theory of SPP had been developed long ago, majority of the results were obtained with the aid of the quasi-static approximations based upon the asymptotic solutions of the dispersion equations in the vicinities of plasmonic resonances. The effect of loss was taken into account either as small perturbations or through complex permittivity of the films in the approximate dispersion relationships [1], [2], [4]- [8]. Such an approach has provided an adequate qualitative description of the SPP properties in low loss media near the plasmonic resonances where the long-range and short-range SPP [5]- [7] in metallic films had been usually analysed at isolated frequencies.…”

Section: Introductionmentioning

confidence: 99%

Surface plasmons in layered structures with semiconductor and metallic films

Schuchinsky

Yan

2009

Eur. Phys. J. Appl. Phys.

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The complete spectrum of eigenwaves including surface plasmon polaritons (SPP), dynamic (bulk) and complex waves in the layered structures containing semiconductor and metallic films has been explored. The effects of loss, geometry and the parameters of dielectric layers on the eigenmode spectrum and, particularly, on the SPP modes have been analysed using both the asymptotic and rigorous numerical solutions of the full-wave dispersion equation. The field and Poynting vector distributions have been examined to identify the modes and elucidate their properties. It has been shown that losses and dispersion of permittivity qualitatively alter the spectral content and the eigenwave properties. The SPP counter-directional power fluxes in the film and surrounding dielectrics have been attributed to vortices of power flow, which are responsible for the distinctive features of SPP modes. It has been demonstrated for the first time that the maximal attainable slow-wave factor of the SPP modes guided by thin Au films at optical frequencies is capped not by losses but the frequency dispersion of the actual Au permittivity.

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Optical excitation of surface plasma waves in layered media

Cited by 112 publications

References 14 publications

Resonant terahertz transmission in plasmonic arrays of subwavelength holes

Resonant terahertz transmission in plasmonic arrays of subwavelength holes

Surface plasmon waves in nanoelectronic circuits

Surface plasmons in layered structures with semiconductor and metallic films

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