All-dielectric nanostructures for low-loss field enhanced spectroscopy and imaging
(Conference Presentation)

Taka-aki Yano; Yuta Tsuchimoto; Tomohiro Hayashi; Masahiko Hara

doi:10.1117/12.2238904

11 November 2016 All-dielectric nanostructures for low-loss field enhanced spectroscopy and imaging (Conference Presentation)

Taka-aki Yano, Yuta Tsuchimoto, Tomohiro Hayashi, Masahiko Hara

Author Affiliations +

Proceedings Volume 9925, Nanoimaging and Nanospectroscopy IV; 99250K (2016) https://doi.org/10.1117/12.2238904
Event: SPIE Nanoscience + Engineering, 2016, San Diego, California, United States

Abstract

Dielectric nanostructures with high refractive index and low optical loss have attracted considerable attention as an alternative to plasmonic nanostructures. We experimentally demonstrated to control the visible electromagnetic resonances of Si-based core-shell nanostructures by thermally varying the core-shell ratio. We also found a Fano resonance which was generated by the interference between the electric and magnetic dipole moments excited in the core-shell nanostructures. The all-dielectric nanostructures realized low energy loss and high electromagnetic field enhancement comparable with that exhibited by plasmonic nanostructures. These unique optical properties would enable us to demonstrate effective field-enhanced spectroscopy and imaging with low heat generation.

Conference Presentation

Citation Download Citation

Taka-aki Yano, Yuta Tsuchimoto, Tomohiro Hayashi, and Masahiko Hara "All-dielectric nanostructures for low-loss field enhanced spectroscopy and imaging (Conference Presentation)", Proc. SPIE 9925, Nanoimaging and Nanospectroscopy IV, 99250K (11 November 2016); https://doi.org/10.1117/12.2238904

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