4.6 Article

Full three-dimensional wavelength-scale plasmomechanical resonator

Journal

OPTICS LETTERS
Volume 46, Issue 6, Pages 1317-1320

Publisher

OPTICAL SOC AMER
DOI: 10.1364/OL.416695

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Funding

  1. National Research Foundation of Korea [2020R1A2C2014685, 2020R1A4A2002828]
  2. National Research Foundation of Korea [2020R1A2C2014685, 2020R1A4A2002828] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

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This study introduces a full three-dimensional wavelength-scale plasmomechanical resonator that allows for precise detection of picometer-scale longitudinal mechanical oscillation and investigates the tunability and thermoelastic effect of mechanical resonance.
Plasmomechanical systems have received considerable interest in mediating the strong interaction between the optical field and mechanical motion. However, typical plasmomechanical systems based on mechanical oscillators that are significantly larger than the wavelength of light do not take full advantage of the optical field concentration beyond the optical diffraction limit of the employed plasmonic resonators. Here we present a full three-dimensional wavelength-scale plasmomechanical resonator consisting of a plasmonic nano-antenna and a hydrogen silsesquioxane nano-wall. The experimental results demonstrated the precise detection of longitudinal mechanical oscillation on a picometer scale, and we investigated the tunability and thermoelastic effect of the mechanical resonance. (C) 2021 Optical Society of America

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