Effects of Fano Resonance on Optical Chirality of Planar Plasmonic Nanodevices

Hwang, Y; Lee, S; Kim, S; Lin, J; Yuan, XC

Effects of Fano Resonance on Optical Chirality of Planar Plasmonic Nanodevices

Hwang, Y Lee, S Kim, S

Lin, J Yuan, XC

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Publication Type:: Journal Article
Citation:: ACS Photonics, 2018, 5 (11), pp. 4538 - 4544
Issue Date:: 2018-11-21

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Field	Value	Language
dc.contributor.author	Hwang, Y	en_US
dc.contributor.author	Lee, S	en_US
dc.contributor.author	Kim, S https://orcid.org/0000-0001-9836-3608	en_US
dc.contributor.author	Lin, J	en_US
dc.contributor.author	Yuan, XC	en_US
dc.date.issued	2018-11-21	en_US
dc.identifier.citation	ACS Photonics, 2018, 5 (11), pp. 4538 - 4544	en_US
dc.identifier.uri	http://hdl.handle.net/10453/128902
dc.description.abstract	Copyright © 2018 American Chemical Society. The effects of Fano resonance on the optical chirality of planar plasmonic nanodevices in the visible wavelength range are experimentally observed and theoretically explained. The nanodevice consists of a nanodisk at the center with surrounding six gold nanorods with an orientation angle to exhibit optical chirality under dark-field illumination. The chiral response induced by the gold nanorods is affected by the presence of the nanodisk with different diameters which causes Fano resonance of different coupling strength. An intriguing change to the opposite selection preference of different handedness of the circularly polarized light has been clearly observed experimentally. This change of the preference is understood based on the coupled localized surface plasmon model. Moreover, electrostatic analysis and the time-dependent simulations provide a further understanding of the phenomenon. The observed and understood effects of Fano resonance on optical chirality enables effective manipulation of chiral characteristics of planar subwavelength nanodevices.	en_US
dc.relation.ispartof	ACS Photonics	en_US
dc.relation.isbasedon	10.1021/acsphotonics.8b01007	en_US
dc.title	Effects of Fano Resonance on Optical Chirality of Planar Plasmonic Nanodevices	en_US
dc.type	Journal Article
utslib.citation.volume	11	en_US
utslib.citation.volume	5	en_US
utslib.for	0205 Optical Physics	en_US
utslib.for	0206 Quantum Physics	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - IBMD - Initiative for Biomedical Devices
utslib.copyright.status	closed_access
pubs.issue	11	en_US
pubs.publication-status	Published	en_US
pubs.volume	5	en_US

Abstract:

Copyright © 2018 American Chemical Society. The effects of Fano resonance on the optical chirality of planar plasmonic nanodevices in the visible wavelength range are experimentally observed and theoretically explained. The nanodevice consists of a nanodisk at the center with surrounding six gold nanorods with an orientation angle to exhibit optical chirality under dark-field illumination. The chiral response induced by the gold nanorods is affected by the presence of the nanodisk with different diameters which causes Fano resonance of different coupling strength. An intriguing change to the opposite selection preference of different handedness of the circularly polarized light has been clearly observed experimentally. This change of the preference is understood based on the coupled localized surface plasmon model. Moreover, electrostatic analysis and the time-dependent simulations provide a further understanding of the phenomenon. The observed and understood effects of Fano resonance on optical chirality enables effective manipulation of chiral characteristics of planar subwavelength nanodevices.

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http://hdl.handle.net/10453/128902