Please use this identifier to cite or link to this item:
https://doi.org/10.1002/lpor.201500116
DC Field | Value | |
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dc.title | Broadband spin-controlled focusing via logarithmic-spiral nanoslits of varying width | |
dc.contributor.author | Mehmood, M.Q | |
dc.contributor.author | Liu, H | |
dc.contributor.author | Huang, K | |
dc.contributor.author | Mei, S | |
dc.contributor.author | Danner, A | |
dc.contributor.author | Luk'yanchuk, B | |
dc.contributor.author | Zhang, S | |
dc.contributor.author | Teng, J | |
dc.contributor.author | Maier, S.A | |
dc.contributor.author | Qiu, C.-W | |
dc.date.accessioned | 2020-09-08T03:56:07Z | |
dc.date.available | 2020-09-08T03:56:07Z | |
dc.date.issued | 2015 | |
dc.identifier.citation | Mehmood, M.Q, Liu, H, Huang, K, Mei, S, Danner, A, Luk'yanchuk, B, Zhang, S, Teng, J, Maier, S.A, Qiu, C.-W (2015). Broadband spin-controlled focusing via logarithmic-spiral nanoslits of varying width. Laser and Photonics Reviews 9 (6) : 674-681. ScholarBank@NUS Repository. https://doi.org/10.1002/lpor.201500116 | |
dc.identifier.issn | 1863-8880 | |
dc.identifier.uri | https://scholarbank.nus.edu.sg/handle/10635/174667 | |
dc.description.abstract | This 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. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA. | |
dc.source | Unpaywall 20200831 | |
dc.subject | Condensed matter physics | |
dc.subject | Diffraction | |
dc.subject | Molecular physics | |
dc.subject | Confined spot | |
dc.subject | Experimental demonstrations | |
dc.subject | Incident wavelength | |
dc.subject | Intensity profiles | |
dc.subject | Logarithmic spiral | |
dc.subject | Micrometer scale | |
dc.subject | Nanoslits | |
dc.subject | Strong dependences | |
dc.subject | Nanostructures | |
dc.type | Article | |
dc.contributor.department | DEPT OF ELECTRICAL & COMPUTER ENGG | |
dc.description.doi | 10.1002/lpor.201500116 | |
dc.description.sourcetitle | Laser and Photonics Reviews | |
dc.description.volume | 9 | |
dc.description.issue | 6 | |
dc.description.page | 674-681 | |
dc.published.state | Published | |
Appears in Collections: | Elements Staff Publications |
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