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Issue 18, 2016
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Resonant Raman scattering from silicon nanoparticles enhanced by magnetic response

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Abstract

Enhancement of optical response with high-index dielectric nanoparticles is attributed to the excitation of their Mie-type magnetic and electric resonances. Here we study Raman scattering from crystalline silicon nanoparticles and reveal that magnetic dipole modes have a much stronger effect on the scattering than electric modes of the same order. We demonstrate experimentally a 140-fold enhancement of the Raman signal from individual silicon spherical nanoparticles at the magnetic dipole resonance. Our results confirm the importance of the optically-induced magnetic response of subwavelength dielectric nanoparticles for enhancing light–matter interactions.

Graphical abstract: Resonant Raman scattering from silicon nanoparticles enhanced by magnetic response

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Supplementary files

Article information


Submitted
11 Nov 2015
Accepted
28 Mar 2016
First published
08 Apr 2016

Nanoscale, 2016,8, 9721-9726
Article type
Paper
Author version available

Resonant Raman scattering from silicon nanoparticles enhanced by magnetic response

P. A. Dmitriev, D. G. Baranov, V. A. Milichko, S. V. Makarov, I. S. Mukhin, A. K. Samusev, A. E. Krasnok, P. A. Belov and Y. S. Kivshar, Nanoscale, 2016, 8, 9721
DOI: 10.1039/C5NR07965A

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