Nanoscale Generation of White Light for Ultrabroadband Nanospectroscopy

Achieving efficient localization of white light at the nanoscale is a major challenge due to the diffraction limit, and nanoscale emitters generating light with a broadband spectrum require complicated engineering. Here we suggest a simple, yet highly efficient, nanoscale white-light source based on...

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Bibliographic Details
Published in:Nano letters 2018-01, Vol.18 (1), p.535-539
Main Authors: Makarov, S. V, Sinev, I. S, Milichko, V. A, Komissarenko, F. E, Zuev, D. A, Ushakova, E. V, Mukhin, I. S, Yu, Y. F, Kuznetsov, A. I, Belov, P. A, Iorsh, I. V, Poddubny, A. N, Samusev, A. K, Kivshar, Yu. S
Format: Article
Language:English
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Summary:Achieving efficient localization of white light at the nanoscale is a major challenge due to the diffraction limit, and nanoscale emitters generating light with a broadband spectrum require complicated engineering. Here we suggest a simple, yet highly efficient, nanoscale white-light source based on a hybrid Si/Au nanoparticle with ultrabroadband (1.3–3.4 eV) spectral characteristics. We incorporate this novel source into a scanning-probe microscope and observe broadband spectrum of photoluminescence that allows fast mapping of local optical response of advanced nanophotonic structures with submicron resolution, thus realizing ultrabroadband near-field nanospectroscopy.
ISSN:1530-6984
1530-6992
DOI:10.1021/acs.nanolett.7b04542