Active Two-Dimensional Steering of Radiation from a Nanoaperture

Laura S. Dreissen; Hugo F. Schouten; Wim Ubachs; Shreyas B. Raghunathan; Taco D. Visser

doi:10.1021/acs.nanolett.8b03319

Active Two-Dimensional Steering of Radiation from a Nanoaperture

Laura S. Dreissen, Hugo F. Schouten, Wim Ubachs, Shreyas B. Raghunathan, Taco D. Visser^*

^*Corresponding author for this work

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

We experimentally demonstrate control over the direction of radiation of a beam that passes through a square nanoaperture in a metal film. The ratio of the aperture size and the wavelength is such that only three guided modes, each with different spatial symmetries, can be excited. Using a spatial light modulator, the superposition of the three modes can be altered, thus allowing for a controlled variation of the radiation pattern that emanates from the nanoaperture. Robust and stable steering of 9.5° in two orthogonal directions was achieved.

Original language	English
Pages (from-to)	7207-7210
Number of pages	4
Journal	Nano Letters
Volume	18
Issue number	11
DOIs	https://doi.org/10.1021/acs.nanolett.8b03319
Publication status	Published - 14 Nov 2018

Keywords

diffraction
guided modes
Nanoapertures
optical switch
radiation steering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1021/acs.nanolett.8b03319

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title = "Active Two-Dimensional Steering of Radiation from a Nanoaperture",

abstract = "We experimentally demonstrate control over the direction of radiation of a beam that passes through a square nanoaperture in a metal film. The ratio of the aperture size and the wavelength is such that only three guided modes, each with different spatial symmetries, can be excited. Using a spatial light modulator, the superposition of the three modes can be altered, thus allowing for a controlled variation of the radiation pattern that emanates from the nanoaperture. Robust and stable steering of 9.5° in two orthogonal directions was achieved.",

keywords = "diffraction, guided modes, Nanoapertures, optical switch, radiation steering",

author = "Dreissen, {Laura S.} and Schouten, {Hugo F.} and Wim Ubachs and Raghunathan, {Shreyas B.} and Visser, {Taco D.}",

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T1 - Active Two-Dimensional Steering of Radiation from a Nanoaperture

AU - Dreissen, Laura S.

AU - Schouten, Hugo F.

AU - Ubachs, Wim

AU - Raghunathan, Shreyas B.

AU - Visser, Taco D.

PY - 2018/11/14

Y1 - 2018/11/14

N2 - We experimentally demonstrate control over the direction of radiation of a beam that passes through a square nanoaperture in a metal film. The ratio of the aperture size and the wavelength is such that only three guided modes, each with different spatial symmetries, can be excited. Using a spatial light modulator, the superposition of the three modes can be altered, thus allowing for a controlled variation of the radiation pattern that emanates from the nanoaperture. Robust and stable steering of 9.5° in two orthogonal directions was achieved.

AB - We experimentally demonstrate control over the direction of radiation of a beam that passes through a square nanoaperture in a metal film. The ratio of the aperture size and the wavelength is such that only three guided modes, each with different spatial symmetries, can be excited. Using a spatial light modulator, the superposition of the three modes can be altered, thus allowing for a controlled variation of the radiation pattern that emanates from the nanoaperture. Robust and stable steering of 9.5° in two orthogonal directions was achieved.

KW - diffraction

KW - guided modes

KW - Nanoapertures

KW - optical switch

KW - radiation steering

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EP - 7210

JO - Nano Letters

JF - Nano Letters

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Active Two-Dimensional Steering of Radiation from a Nanoaperture

Abstract

Keywords

UN SDGs

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