Aperture-SNOM reveals plasmonic magnetic near-fields (presentation video)

Niels Verellen; Denitza Denkova; Alejandro V. Silhanek; Ventsislav K. Valev; Pol Van Dorpe; Victor V. Moshchalkov

doi:10.1117/12.2062595

19 November 2014 Aperture-SNOM reveals plasmonic magnetic near-fields (presentation video)

Niels Verellen, Denitza Denkova, Alejandro V. Silhanek, Ventsislav K. Valev, Pol Van Dorpe, Victor V. Moshchalkov

Proceedings Volume 9169, Nanoimaging and Nanospectroscopy II; 91690J (2014) https://doi.org/10.1117/12.2062595
Event: SPIE NanoScience + Engineering, 2014, San Diego, California, United States

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).

Citation Download Citation

Niels Verellen, Denitza Denkova, Alejandro V. Silhanek, Ventsislav K. Valev, Pol Van Dorpe, and Victor V. Moshchalkov "Aperture-SNOM reveals plasmonic magnetic near-fields (presentation video)", Proc. SPIE 9169, Nanoimaging and Nanospectroscopy II, 91690J (19 November 2014); https://doi.org/10.1117/12.2062595

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