期刊
JOURNAL OF OPTICS
卷 15, 期 7, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/2040-8978/15/7/073001
关键词
singular optics; Fano resonance; optical vortices; Mie scattering
类别
资金
- Agency for Science, Technology and Research (A*STAR) of Singapore from the Joint Council of A*STAR [092 154 0099, TSRP-1021520018, JCOAG03-FG04-2009]
- Australian Research Council
Fano resonances and optical vortices originate from two types of interference phenomena. Usually, these effects are considered to be completely independent, and in many cases Fano resonances are observed without any link to vortices, as well as vortices with a singular phase structure that are not accompanied by Fano resonances. However, this situation changes dramatically when we study light scattering at the nanoscale. In this paper, we demonstrate that Fano resonances observed for light scattering by nanoparticles are accompanied by the singular phase effects usually associated with singular optics, and we introduce and describe optical vortices with characteristic core sizes well below the diffraction limit.
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