Optical vortices during a superresolution process in a metamaterial
| dc.contributor.author | D’Aguanno, G. | |
| dc.contributor.author | Mattiucci, N. | |
| dc.contributor.author | Bloemer, M. | |
| dc.contributor.author | Desyatnikov, A. | |
| dc.date.accessioned | 2020-05-28T21:43:51Z | |
| dc.date.available | 2020-05-28T21:43:51Z | |
| dc.date.issued | 2008-04-17 | |
| dc.description.abstract | We show that a superresolution process with 100% visibility is characterized by the formation of a point of phase singularity in free space outside a metamaterial in the form of a saddle with topological charge equal to −1 . The saddle point is connected to two vortices at the end boundaries of the lens, and the two vortices are in turn connected to another saddle point inside the lens. The structure saddle-vortices-saddle is topologically stable. The formation of the saddle point in free space explains also the negative flux of energy present in a certain region of space outside the lens. The circulation strength of the power flow can be controlled by varying the position of the object plane with respect to the lens. | en_US |
| dc.description.sponsorship | G.D. and A.D. thank Yuri Kivshar for helpful discussions. The research of G.D. and N.M. is supported by the National Research Council of the United States; the research of A.D. is supported by the Australian Research Council. | en_US |
| dc.description.uri | https://journals.aps.org/pra/abstract/10.1103/PhysRevA.77.043825 | en_US |
| dc.format.extent | 4 pages | en_US |
| dc.genre | journal articles | en_US |
| dc.identifier | doi:10.13016/m2ssgs-qujk | |
| dc.identifier.citation | G. D’Aguanno et al., Optical vortices during a superresolution process in a metamaterial, Phys. Rev. A, Vol. 77, Iss. 4 (2008), https://doi-org.proxy-bc.researchport.umd.edu/10.1103/PhysRevA.77.043825 | en_US |
| dc.identifier.uri | https://doi-org.proxy-bc.researchport.umd.edu/10.1103/PhysRevA.77.043825 | |
| dc.identifier.uri | http://hdl.handle.net/11603/18780 | |
| dc.language.iso | en_US | en_US |
| dc.publisher | American Physical Society (APS) | en_US |
| dc.relation.isAvailableAt | The University of Maryland, Baltimore County (UMBC) | |
| dc.relation.ispartof | UMBC Computer Science and Electrical Engineering Department Collection | |
| dc.rights | This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author. | |
| dc.rights | Public Domain Mark 1.0 | * |
| dc.rights | This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law. | |
| dc.rights.uri | http://creativecommons.org/publicdomain/mark/1.0/ | * |
| dc.title | Optical vortices during a superresolution process in a metamaterial | en_US |
| dc.type | Text | en_US |