NDLI: Tailoring the chirality of light emission with spherical Si-based antennas

Content Provider	Royal Society of Chemistry (RSC)
Author	Bonod, Nicolas Zambrana-Puyalto, Xavier
Copyright Year	2016
Abstract	Chirality of light is of fundamental importance in several enabling technologies with growing applications in life sciences, chemistry and photodetection. Recently, some attention has been focused on chiral quantum emitters. Consequently, optical antennas which are able to tailor the chirality of light emission are needed. Spherical nanoresonators such as colloids are of particular interest to design optical antennas since they can be synthesized at a large scale and they exhibit good optical properties. Here, we show that these colloids can be used to tailor the chirality of a chiral emitter. To this purpose, we derive an analytic formalism to model the interaction between a chiral emitter and a spherical resonator. We then compare the performances of metallic and dielectric spherical antennas to tailor the chirality of light emission. It is seen that, due to their strong electric dipolar response, metallic spherical nanoparticles spoil the chirality of light emission by yielding achiral fields. In contrast, thanks to the combined excitation of electric and magnetic modes, dielectric Si-based particles feature the ability to inhibit or to boost the chirality of light emission. Finally, it is shown that dual modes in dielectric antennas preserve the chirality of light emission.
Starting Page	10441
Ending Page	10452
Page Count	12
File Format	HTM / HTML PDF
ISSN	20403364
Volume Number	8
Issue Number	19
Journal	Nanoscale
DOI	10.1039/c6nr00676k
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Chemistry List of life sciences Chirality Dielectric Quantum tunnelling
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology

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