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Article: Optical Chirality Enhancement in Hollow Silicon Disk by Dipolar Interference

TitleOptical Chirality Enhancement in Hollow Silicon Disk by Dipolar Interference
Authors
Keywordsanapole
magnetic dipole
Mie resonator
multipole decomposition
optical chirality
Issue Date2021
PublisherWiley - VCH Verlag GmbH & Co. KGaA. The Journal's web site is located at http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)2195-1071
Citation
Advanced Optical Materials, 2021, v. 9 n. 5, p. article no. 2001771 How to Cite?
AbstractOptical chirality enhancement is highly demanded for enantioselective interaction of circularly polarized light with chiral molecules. The chirality enhancement in the coaxial air hole of a hollow silicon disk depends on three aspects, namely, the enhancements of electric and magnetic fields and a factor determined by the phases of their field components. In the spectral regime of dipole resonances, maximum chirality enhancement with sign consistency and uniform spatial distribution in the air hole can be obtained in association with both magnetic dipole resonance and anapole. Due to dipolar interference, the chirality is nulled at their coincidence, around which the sign of chirality is reversed. Maximum chirality with both positive and negative signs can be found between magnetic dipole resonance and anapole in the vicinity of their coincidence. This situation is maintained under size scaling so that the operation wavelength can be broadly tuned. The optical chirality can be further improved by merely adjusting the hole radius, by which the optimal spatially averaged optical chirality enhancement factor can reach 39 and −23. The simple strategy for optimizing Mie resonators presented in this work may benefit the design of Mie resonator‐based achiral metasurfaces for chirality detection application.
Persistent Identifierhttp://hdl.handle.net/10722/295339
ISSN
2020 Impact Factor: 9.926
2020 SCImago Journal Rankings: 2.890
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorDu, K-
dc.contributor.authorLi, P-
dc.contributor.authorWang, H-
dc.contributor.authorGao, K-
dc.contributor.authorLiu, RB-
dc.contributor.authorLu, F-
dc.contributor.authorZhang, W-
dc.contributor.authorMei, T-
dc.date.accessioned2021-01-11T13:58:42Z-
dc.date.available2021-01-11T13:58:42Z-
dc.date.issued2021-
dc.identifier.citationAdvanced Optical Materials, 2021, v. 9 n. 5, p. article no. 2001771-
dc.identifier.issn2195-1071-
dc.identifier.urihttp://hdl.handle.net/10722/295339-
dc.description.abstractOptical chirality enhancement is highly demanded for enantioselective interaction of circularly polarized light with chiral molecules. The chirality enhancement in the coaxial air hole of a hollow silicon disk depends on three aspects, namely, the enhancements of electric and magnetic fields and a factor determined by the phases of their field components. In the spectral regime of dipole resonances, maximum chirality enhancement with sign consistency and uniform spatial distribution in the air hole can be obtained in association with both magnetic dipole resonance and anapole. Due to dipolar interference, the chirality is nulled at their coincidence, around which the sign of chirality is reversed. Maximum chirality with both positive and negative signs can be found between magnetic dipole resonance and anapole in the vicinity of their coincidence. This situation is maintained under size scaling so that the operation wavelength can be broadly tuned. The optical chirality can be further improved by merely adjusting the hole radius, by which the optimal spatially averaged optical chirality enhancement factor can reach 39 and −23. The simple strategy for optimizing Mie resonators presented in this work may benefit the design of Mie resonator‐based achiral metasurfaces for chirality detection application.-
dc.languageeng-
dc.publisherWiley - VCH Verlag GmbH & Co. KGaA. The Journal's web site is located at http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)2195-1071-
dc.relation.ispartofAdvanced Optical Materials-
dc.rightsSubmitted (preprint) Version This is the pre-peer reviewed version of the following article: [FULL CITE], which has been published in final form at [Link to final article using the DOI]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. Accepted (peer-reviewed) Version This is the peer reviewed version of the following article: [FULL CITE], which has been published in final form at [Link to final article using the DOI]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.-
dc.subjectanapole-
dc.subjectmagnetic dipole-
dc.subjectMie resonator-
dc.subjectmultipole decomposition-
dc.subjectoptical chirality-
dc.titleOptical Chirality Enhancement in Hollow Silicon Disk by Dipolar Interference-
dc.typeArticle-
dc.identifier.emailLiu, RB: ruibin@HKUCC-COM.hku.hk-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/adom.202001771-
dc.identifier.hkuros320842-
dc.identifier.volume9-
dc.identifier.issue5-
dc.identifier.spagearticle no. 2001771-
dc.identifier.epagearticle no. 2001771-
dc.identifier.isiWOS:000599191900001-
dc.publisher.placeGermany-

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