Far- and near-field electron beam detection of hybrid cavity-plasmonic modes in gold microholes

Itai Carmeli; M. A. Itskovsky; Y. Kauffmann; S. Richter; T. Maniv; Hagai Cohen

doi:https://doi.org/10.1103/PhysRevB.85.041405

Far- and near-field electron beam detection of hybrid cavity-plasmonic modes in gold microholes

Itai Carmeli, M. A. Itskovsky, Y. Kauffmann, S. Richter, T. Maniv, Hagai Cohen

Weizmann Institute Of Science, Tel Aviv University, Technion - Israel Institute of Technology, Bar-Ilan University

Research output: Contribution to journal › Article › peer-review

Abstract

Electromagnetic far-and near-field excitations of rectangular microholes in gold films are investigated by means of a focused e beam. Radiative cavity modes, well below the surface plasmon (SP) frequency, are detected at exceptionally large distances and are shown to be strongly enhanced at near-field regions of selected slit walls due to hybridization with metal-supported SP polaritons. The proposed enhancement mechanism of such hybridized modes, found here to preserve the cutoff frequencies and symmetry characteristics of the pure waveguide modes, sheds light on the intriguing phenomenon of extraordinary optical transmission through subwavelength apertures in metallic films.

Original language	English
Article number	041405(R)
Number of pages	5
Journal	Physical Review B
Volume	85
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevB.85.041405
State	Published - 24 Jan 2012

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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https://doi.org/10.1103/PhysRevB.85.041405

Cite this

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title = "Far- and near-field electron beam detection of hybrid cavity-plasmonic modes in gold microholes",

abstract = "Electromagnetic far-and near-field excitations of rectangular microholes in gold films are investigated by means of a focused e beam. Radiative cavity modes, well below the surface plasmon (SP) frequency, are detected at exceptionally large distances and are shown to be strongly enhanced at near-field regions of selected slit walls due to hybridization with metal-supported SP polaritons. The proposed enhancement mechanism of such hybridized modes, found here to preserve the cutoff frequencies and symmetry characteristics of the pure waveguide modes, sheds light on the intriguing phenomenon of extraordinary optical transmission through subwavelength apertures in metallic films.",

author = "Itai Carmeli and Itskovsky, {M. A.} and Y. Kauffmann and S. Richter and T. Maniv and Hagai Cohen",

note = "Russell Berrie Nanotechnology Institute at the Technion-Israel Institute of Technology; James Frank Foundation at Tel-Aviv University; Wolfson Foundation at Tel-Aviv UniversityThis work was supported by the Russell Berrie Nanotechnology Institute at the Technion-Israel Institute of Technology (T.M.), and by the James Frank and Wolfson Foundations at Tel-Aviv University (S.R.).",

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doi = "https://doi.org/10.1103/PhysRevB.85.041405",

language = "الإنجليزيّة",

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T1 - Far- and near-field electron beam detection of hybrid cavity-plasmonic modes in gold microholes

AU - Carmeli, Itai

AU - Itskovsky, M. A.

AU - Kauffmann, Y.

AU - Richter, S.

AU - Maniv, T.

AU - Cohen, Hagai

N1 - Russell Berrie Nanotechnology Institute at the Technion-Israel Institute of Technology; James Frank Foundation at Tel-Aviv University; Wolfson Foundation at Tel-Aviv UniversityThis work was supported by the Russell Berrie Nanotechnology Institute at the Technion-Israel Institute of Technology (T.M.), and by the James Frank and Wolfson Foundations at Tel-Aviv University (S.R.).

PY - 2012/1/24

Y1 - 2012/1/24

N2 - Electromagnetic far-and near-field excitations of rectangular microholes in gold films are investigated by means of a focused e beam. Radiative cavity modes, well below the surface plasmon (SP) frequency, are detected at exceptionally large distances and are shown to be strongly enhanced at near-field regions of selected slit walls due to hybridization with metal-supported SP polaritons. The proposed enhancement mechanism of such hybridized modes, found here to preserve the cutoff frequencies and symmetry characteristics of the pure waveguide modes, sheds light on the intriguing phenomenon of extraordinary optical transmission through subwavelength apertures in metallic films.

AB - Electromagnetic far-and near-field excitations of rectangular microholes in gold films are investigated by means of a focused e beam. Radiative cavity modes, well below the surface plasmon (SP) frequency, are detected at exceptionally large distances and are shown to be strongly enhanced at near-field regions of selected slit walls due to hybridization with metal-supported SP polaritons. The proposed enhancement mechanism of such hybridized modes, found here to preserve the cutoff frequencies and symmetry characteristics of the pure waveguide modes, sheds light on the intriguing phenomenon of extraordinary optical transmission through subwavelength apertures in metallic films.

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U2 - https://doi.org/10.1103/PhysRevB.85.041405

DO - https://doi.org/10.1103/PhysRevB.85.041405

M3 - مقالة

SN - 1098-0121

VL - 85

JO - Physical Review B

JF - Physical Review B

IS - 4

M1 - 041405(R)

ER -

Far- and near-field electron beam detection of hybrid cavity-plasmonic modes in gold microholes

Abstract

All Science Journal Classification (ASJC) codes

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