Focusing surface plasmons via changing the incident angle

Humeyra Caglayan; Irfan Bulu; Ekmel Ozbay

doi:10.1063/1.2844552

Focusing surface plasmons via changing the incident angle

Humeyra Caglayan
, Irfan Bulu
, Ekmel Ozbay

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

6 Citations (Scopus)

Abstract

We report a circular metallic aperture with a subwavelength circular slit in the microwave regime, in which we experimentally demonstrate that this aperture can excite and focus surface plasmons. Under normal illumination, there is no focusing of the surface plasmons. However, by changing the incident angle, it is possible to focus surface plasmons. We showed that under a 20° illumination angle surface plasmons focus at 4 cm away from the center on the surface of the aperture.

Original language	English
Article number	053105
Journal	Journal of Applied Physics
Volume	103
Issue number	5
DOIs	https://doi.org/10.1063/1.2844552
Publication status	Published - 2008
Externally published	Yes
Publication type	A1 Journal article-refereed

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)
General Physics and Astronomy

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10.1063/1.2844552

Cite this

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title = "Focusing surface plasmons via changing the incident angle",

abstract = "We report a circular metallic aperture with a subwavelength circular slit in the microwave regime, in which we experimentally demonstrate that this aperture can excite and focus surface plasmons. Under normal illumination, there is no focusing of the surface plasmons. However, by changing the incident angle, it is possible to focus surface plasmons. We showed that under a 20° illumination angle surface plasmons focus at 4 cm away from the center on the surface of the aperture.",

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AU - Bulu, Irfan

AU - Ozbay, Ekmel

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PY - 2008

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N2 - We report a circular metallic aperture with a subwavelength circular slit in the microwave regime, in which we experimentally demonstrate that this aperture can excite and focus surface plasmons. Under normal illumination, there is no focusing of the surface plasmons. However, by changing the incident angle, it is possible to focus surface plasmons. We showed that under a 20° illumination angle surface plasmons focus at 4 cm away from the center on the surface of the aperture.

AB - We report a circular metallic aperture with a subwavelength circular slit in the microwave regime, in which we experimentally demonstrate that this aperture can excite and focus surface plasmons. Under normal illumination, there is no focusing of the surface plasmons. However, by changing the incident angle, it is possible to focus surface plasmons. We showed that under a 20° illumination angle surface plasmons focus at 4 cm away from the center on the surface of the aperture.

UR - https://www.scopus.com/pages/publications/40849141082

U2 - 10.1063/1.2844552

DO - 10.1063/1.2844552

M3 - Article

AN - SCOPUS:40849141082

SN - 0021-8979

VL - 103

JO - Journal of Applied Physics

JF - Journal of Applied Physics

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M1 - 053105

ER -

Focusing surface plasmons via changing the incident angle

Abstract

ASJC Scopus subject areas

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