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Proceedings Paper

Aperture-SNOM reveals plasmonic magnetic near-fields (presentation video)
Author(s): Niels Verellen; Denitza Denkova; Alejandro V. Silhanek; Ventsislav K. Valev; Pol Van Dorpe; Victor V. Moshchalkov
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Paper Abstract
We report mapping of the lateral magnetic near-field distribution of plasmonic resonant modes in different nanostructure geometries by hollow-pyramid probe aperture-SNOM. Using full-field simulations we investigate how the near-field probe acts as a confined light source and how it efficiently excites surface plasmons. This excitation occurs at lateral magnetic field maxima, enabling the visualization of the lateral magnetic near-field distribution with subwavelength spatial resolution. Our approach complements the available methods for imaging the different field components of light. [1] D. Denkova, N. Verellen et al., ACS nano 7(4), 3168-3176 (2013). [2] D. Denkova, N. Verellen et al., Small, accepted (2013).
Paper Details
Date Published: 19 November 2014
PDF: 1 pages
Proc. SPIE 9169, Nanoimaging and Nanospectroscopy II, 91690J (19 November 2014); doi: 10.1117/12.2062595
Show Author Affiliations
Niels Verellen, Katholieke Univ. Leuven (Belgium)
IMEC (Belgium)
Denitza Denkova, Katholieke Univ. Leuven (Belgium)
Alejandro V. Silhanek, Univ. de Liège (Belgium)
Ventsislav K. Valev, Univ. of Cambridge (United Kingdom)
Pol Van Dorpe, IMEC (Belgium)
Katholieke Univ. Leuven (Belgium)
Victor V. Moshchalkov, Katholieke Univ. Leuven (Belgium)

Published in SPIE Proceedings Vol. 9169:
Nanoimaging and Nanospectroscopy II
Prabhat Verma; Alexander Egner, Editor(s)
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