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Article: Broadband spin-controlled focusing via logarithmic-spiral nanoslits of varying width

TitleBroadband spin-controlled focusing via logarithmic-spiral nanoslits of varying width
Authors
KeywordsConfined spot
Logarithmic-spiral nanoslit
Diffraction
Broadband spin-controlled focusing
Issue Date2015
Citation
Laser and Photonics Reviews, 2015, v. 9, n. 6, p. 674-681 How to Cite?
AbstractThis work presents analytical, numerical and experimental demonstrations of light diffracted through a logarithmic spiral (LS) nanoslit, which forms a type of switchable and focus-tunable structure. Owing to a strong dependence on the incident photon spin, the proposed LS-nanoslit converges incoming light of opposite handedness (to that of the LS-nanoslit) into a confined subwavelength spot, while it shapes light with similar chirality into a donut-like intensity profile. Benefitting from the varying width of the LS-nanoslit, different incident wavelengths interfere constructively at different positions, i.e., the focal length shifts from 7.5 μm (at λ = 632.8 nm) to 10 μm (at λ = 488 nm), which opens up new opportunities for tuning and spatially separating broadband light at the micrometer scale. A logarithmic spiral (LS) nanoslit with switchable focusing functionalities has been experimentally demonstrated as a promising candidate to identify the handedness of incident circular polarization. Strongly depending on spin of incident photons, this LS-nanoslit converges the incoming light with opposite handedness (with respect to the handedness of the LS-slit) into a confined subwavelength spot, while the light with identical chirality is structured into a donut-shape profile at the focal plane.
Persistent Identifierhttp://hdl.handle.net/10722/295155
ISSN
2020 Impact Factor: 13.138
2015 SCImago Journal Rankings: 4.690
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorMehmood, M. Q.-
dc.contributor.authorLiu, Hong-
dc.contributor.authorHuang, Kun-
dc.contributor.authorMei, Shengtao-
dc.contributor.authorDanner, Aaron-
dc.contributor.authorLuk'yanchuk, Boris-
dc.contributor.authorZhang, Shuang-
dc.contributor.authorTeng, Jinghua-
dc.contributor.authorMaier, Stefan A.-
dc.contributor.authorQiu, Cheng Wei-
dc.date.accessioned2021-01-05T04:59:11Z-
dc.date.available2021-01-05T04:59:11Z-
dc.date.issued2015-
dc.identifier.citationLaser and Photonics Reviews, 2015, v. 9, n. 6, p. 674-681-
dc.identifier.issn1863-8880-
dc.identifier.urihttp://hdl.handle.net/10722/295155-
dc.description.abstractThis work presents analytical, numerical and experimental demonstrations of light diffracted through a logarithmic spiral (LS) nanoslit, which forms a type of switchable and focus-tunable structure. Owing to a strong dependence on the incident photon spin, the proposed LS-nanoslit converges incoming light of opposite handedness (to that of the LS-nanoslit) into a confined subwavelength spot, while it shapes light with similar chirality into a donut-like intensity profile. Benefitting from the varying width of the LS-nanoslit, different incident wavelengths interfere constructively at different positions, i.e., the focal length shifts from 7.5 μm (at λ = 632.8 nm) to 10 μm (at λ = 488 nm), which opens up new opportunities for tuning and spatially separating broadband light at the micrometer scale. A logarithmic spiral (LS) nanoslit with switchable focusing functionalities has been experimentally demonstrated as a promising candidate to identify the handedness of incident circular polarization. Strongly depending on spin of incident photons, this LS-nanoslit converges the incoming light with opposite handedness (with respect to the handedness of the LS-slit) into a confined subwavelength spot, while the light with identical chirality is structured into a donut-shape profile at the focal plane.-
dc.languageeng-
dc.relation.ispartofLaser and Photonics Reviews-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectConfined spot-
dc.subjectLogarithmic-spiral nanoslit-
dc.subjectDiffraction-
dc.subjectBroadband spin-controlled focusing-
dc.titleBroadband spin-controlled focusing via logarithmic-spiral nanoslits of varying width-
dc.typeArticle-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1002/lpor.201500116-
dc.identifier.scopuseid_2-s2.0-84955479987-
dc.identifier.volume9-
dc.identifier.issue6-
dc.identifier.spage674-
dc.identifier.epage681-
dc.identifier.eissn1863-8899-
dc.identifier.isiWOS:000368255200010-
dc.identifier.issnl1863-8880-

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