Nanoscale Generation of White Light for Ultrabroadband Nanospectroscopy

• DOI: 10.1021/acs.nanolett.7b04542
• Publication Date: 2017-12-15T20:57:50Z
• Authors: S. V. Makarov; I. S. Sinev; V. A. Milichko; F. E. Komissarenko; D. A. Zuev; E. V. Ushakova; I. S. Mukhin; Y. F. Yu; A. I. Kuznetsov; P. A. Belov; I. V. Iorsh; A. N. Poddubny; A. K. Samusev; Yu. S. Kivshar
• Keywords: Nanophotonics; Visible spectrum

Achieving efficient localization of white light at the nanoscale is a major challenge due to diffraction limit, and emitters generating with broadband spectrum require complicated engineering. Here we suggest simple, yet highly efficient, white-light source based on hybrid Si/Au nanoparticle ultrabroadband (1.3–3.4 eV) spectral characteristics. We incorporate this novel into scanning-probe microscope observe photoluminescence that allows fast mapping local optical response advanced nanophotonic structures submicron resolution, thus realizing near-field nanospectroscopy.