A phased antenna array for surface plasmons

D.J.W. Dikken; Jeroen P. Korterik; Franciscus B. Segerink; Jennifer Lynn Herek; Jord Prangsma

doi:10.1038/srep25037

A phased antenna array for surface plasmons

D.J.W. Dikken, Jeroen P. Korterik, Franciscus B. Segerink, Jennifer Lynn Herek, Jord Prangsma

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Abstract

Surface plasmon polaritons are electromagnetic waves that propagate tightly bound to metal surfaces. The concentration of the electromagnetic field at the surface as well as the short wavelength of surface plasmons enable sensitive detection methods and miniaturization of optics. We present an optical frequency plasmonic analog to the phased antenna array as it is well known in radar technology and radio astronomy. Individual holes in a thick gold film act as dipolar emitters of surface plasmon polaritons whose phase is controlled individually using a digital spatial light modulator. We show experimentally, using a phase sensitive near-field microscope, that this optical system allows accurate directional emission of surface waves. This compact and flexible method allows for dynamically shaping the propagation of plasmons and holds promise for nanophotonic applications employing propagating surface plasmons.

Original language	English
Article number	25037
Journal	Scientific reports
Volume	6
DOIs	https://doi.org/10.1038/srep25037
Publication status	Published - 2016

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title = "A phased antenna array for surface plasmons",

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author = "D.J.W. Dikken and Korterik, {Jeroen P.} and Segerink, {Franciscus B.} and Herek, {Jennifer Lynn} and Jord Prangsma",

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T1 - A phased antenna array for surface plasmons

AU - Dikken, D.J.W.

AU - Korterik, Jeroen P.

AU - Segerink, Franciscus B.

AU - Herek, Jennifer Lynn

AU - Prangsma, Jord

PY - 2016

Y1 - 2016

N2 - Surface plasmon polaritons are electromagnetic waves that propagate tightly bound to metal surfaces. The concentration of the electromagnetic field at the surface as well as the short wavelength of surface plasmons enable sensitive detection methods and miniaturization of optics. We present an optical frequency plasmonic analog to the phased antenna array as it is well known in radar technology and radio astronomy. Individual holes in a thick gold film act as dipolar emitters of surface plasmon polaritons whose phase is controlled individually using a digital spatial light modulator. We show experimentally, using a phase sensitive near-field microscope, that this optical system allows accurate directional emission of surface waves. This compact and flexible method allows for dynamically shaping the propagation of plasmons and holds promise for nanophotonic applications employing propagating surface plasmons.

AB - Surface plasmon polaritons are electromagnetic waves that propagate tightly bound to metal surfaces. The concentration of the electromagnetic field at the surface as well as the short wavelength of surface plasmons enable sensitive detection methods and miniaturization of optics. We present an optical frequency plasmonic analog to the phased antenna array as it is well known in radar technology and radio astronomy. Individual holes in a thick gold film act as dipolar emitters of surface plasmon polaritons whose phase is controlled individually using a digital spatial light modulator. We show experimentally, using a phase sensitive near-field microscope, that this optical system allows accurate directional emission of surface waves. This compact and flexible method allows for dynamically shaping the propagation of plasmons and holds promise for nanophotonic applications employing propagating surface plasmons.

U2 - 10.1038/srep25037

DO - 10.1038/srep25037

M3 - Article

SN - 2045-2322

VL - 6

JO - Scientific reports

JF - Scientific reports

M1 - 25037

ER -

A phased antenna array for surface plasmons

Abstract

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