Local investigation of the optical properties of subwavelength rectangular holes with a focused beam of electrons | Zendy

Jord C. Prangsma | Zendy; D. van Oosten | Zendy; L. Kuipers | Zendy

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Local investigation of the optical properties of subwavelength rectangular holes with a focused beam of electrons

Author(s) -

Jord C. Prangsma,

D. van Oosten,

L. Kuipers

Publication year - 2011

Publication title -

philosophical transactions of the royal society a mathematical physical and engineering sciences

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.074

H-Index - 169

eISSN - 1471-2962

pISSN - 1364-503X

DOI - 10.1098/rsta.2011.0173

Subject(s) - optics , diffraction , electron , materials science , polarization (electrochemistry) , physics , chemistry , quantum mechanics

The optical properties of rectangular subwavelength holes in a gold film are investigated using the light generated when a focused beam of electrons impinges on the sample close to the hole. Using this technique, multi-spectral maps of the holes are obtained with a resolution beyond the optical diffraction limit. The results show the influence of hole shape on the spectrum of locally scattered light. Rectangular holes of varying shape and size are investigated, and the spatial distribution of the polarization of the observed light is measured. The influence of neighbouring holes is investigated by measuring small clusters of holes.

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