Nanoscale Generation of White Light for Ultrabroadband Nanospectroscopy.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 29244507.
- Also identified by DOI 10.1021/acs.nanolett.7b04542.
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Abstract
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.