Active Two-Dimensional Steering of Radiation from a Nanoaperture

Research output: Contribution to JournalArticleAcademicpeer-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.

LanguageEnglish
Pages7207-7210
Number of pages4
JournalNano Letters
Volume18
Issue number11
DOIs
Publication statusPublished - 14 Nov 2018

Fingerprint

Radiation
Wavelength
radiation
light modulators
Metals
metal films
apertures
symmetry
wavelengths
Spatial light modulators
Direction compound

Keywords

  • diffraction
  • guided modes
  • Nanoapertures
  • optical switch
  • radiation steering

Cite this

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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.",
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Active Two-Dimensional Steering of Radiation from a Nanoaperture. / Dreissen, Laura S.; Schouten, Hugo F.; Ubachs, Wim; Raghunathan, Shreyas B.; Visser, Taco D.

In: Nano Letters, Vol. 18, No. 11, 14.11.2018, p. 7207-7210.

Research output: Contribution to JournalArticleAcademicpeer-review

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AU - Dreissen, Laura S.

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AU - Visser, Taco D.

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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.

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