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Tight focus of light using micropolarizer and microlens
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dc.contributor.author | Stafeev, S.S. | |
dc.contributor.author | O'Faolain, Liam | |
dc.contributor.author | Kotlyar, V.V. | |
dc.contributor.author | Nalimov, A.G. | |
dc.date.accessioned | 2016-01-05T10:10:13Z | |
dc.date.available | 2016-01-05T10:10:13Z | |
dc.date.issued | 2015-05-10 | |
dc.identifier | 228459050 | |
dc.identifier | d124386f-1dd8-45eb-996d-2e3fe366c6c8 | |
dc.identifier | 84942366669 | |
dc.identifier | 000354191500013 | |
dc.identifier.citation | Stafeev , S S , O'Faolain , L , Kotlyar , V V & Nalimov , A G 2015 , ' Tight focus of light using micropolarizer and microlens ' , Applied Optics , vol. 54 , no. 14 , pp. 4388-4394 . https://doi.org/10.1364/AO.54.004388 | en |
dc.identifier.issn | 1559-128X | |
dc.identifier.uri | https://hdl.handle.net/10023/7960 | |
dc.description | Funding: European Research Council (ERC) (337508); Ministry of Education and Science of the Russian Federation (MK-4816.2014.2, NSh-3970.2014.9); Russian Foundation for Basic Research (14-07-31092, 14-07-97039, 14-29-07133, 15-07-01174). | en |
dc.description.abstract | Using a binary microlens of diameter 14 μm and focal length 532 nm (NA = 0.997) in resist, we focus a 633 nm laser beam into a near-circular focal spot with dimensions (0.35 ± 0.02)λ and (0.38 ± 0.02)λ (λ is incident wavelength) at full width half-maximum intensity. The area of the focal spot is 0.105λ2. The incident light is a mixture of linearly and radially polarized beams generated by reflecting a linearly polarized Gaussian beam at a 100 μm 100 μm four-sector subwavelength diffractive optical microelement with a gold coating. The focusing of a linearly polarized laser beam (the other conditions being the same) is found to produce an elliptical focal spot measuring (0.40 ± 0.02)λ and (0.50 ± 0.02)λ. To our knowledge, this is the first implementation of subwavelength focusing of light using a pair of micro-optic elements (a binary microlens and a micropolarizer). | |
dc.format.extent | 7 | |
dc.format.extent | 687864 | |
dc.language.iso | eng | |
dc.relation.ispartof | Applied Optics | en |
dc.subject | QC Physics | en |
dc.subject | NDAS | en |
dc.subject.lcc | QC | en |
dc.title | Tight focus of light using micropolarizer and microlens | en |
dc.type | Journal article | en |
dc.contributor.sponsor | European Research Council | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.contributor.institution | University of St Andrews. Microphotonics and Photonic Crystals Group | en |
dc.identifier.doi | https://doi.org/10.1364/AO.54.004388 | |
dc.description.status | Peer reviewed | en |
dc.identifier.grantnumber | 337508 337508 | en |
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