Resonant Raman scattering from silicon nanoparticles enhanced by magnetic response

Pavel A. Dmitriev, Denis G. Baranov, Valentin A. Milichko, Sergey V. Makarov, Ivan S. Mukhin, Anton K. Samusev, Alexander E. Krasnok*, Pavel A. Belov, Yuri S. Kivshar

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    133 Citations (Scopus)

    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.

    Original languageEnglish
    Pages (from-to)9721-9726
    Number of pages6
    JournalNanoscale
    Volume8
    Issue number18
    DOIs
    Publication statusPublished - 14 May 2016

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