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dc.contributor.authorStaliunas, K.
dc.contributor.authorAhmed, Waqas Waseem
dc.contributor.authorHerrer, R.
dc.contributor.authorBotey, M.
dc.contributor.authorHayran, Z.
dc.contributor.authorKurt, H.
dc.date.accessioned2019-12-16T08:03:15Z
dc.date.available2019-12-16T08:03:15Z
dc.date.issued2019-10-17
dc.identifier.citationStaliunas, K., Ahmed, W. W., Herrer, R., Botey, M., Hayran, Z., & Kurt, H. (2019). Directionality Fields Generated by a Local Hilbert Transform in Optics. 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC). doi:10.1109/cleoe-eqec.2019.8872900
dc.identifier.doi10.1109/CLEOE-EQEC.2019.8872900
dc.identifier.urihttp://hdl.handle.net/10754/660598
dc.description.abstractConventional Hilbert transform in time (Kramers Kronig relation) is due to causality, in other words to time asymmetry, i.e. to the arrow of time. The same Hilbert transform applied in space breaks analogously the space symmetry and can introduce unidirectional invisibility, or unidirectional coupling or scattering of fields [1]. We propose a local Hilbert transform, in order to design non-Hermitian optical potentials, generating arbitrary directionality of scattering, with desired shapes and topologies [2], We derive a local Hilbert transform to systematically build such non-Hennitian potentials in two-dimensional space, by modifying the background potentials, the refraction index profiles, being either regular or random, extended or localized. In particular, we explore particular directionality fields, for instance in the form of a focus to create sinks for probe fields, which could help to increase absorption at the sink (see Fig.1, left part), or for instance to generate the vortices or currents in the probe fields, as another example. Physically, the proposed directionality field generation provides a flexible new mechanism for dynamically shaping and precise control over probe fields leading to novel effects in wave dynamics [3].
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.relation.urlhttps://ieeexplore.ieee.org/document/8872900/
dc.relation.urlhttps://ieeexplore.ieee.org/document/8872900/
dc.relation.urlhttps://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8872900
dc.rightsArchived with thanks to IEEE
dc.titleDirectionality Fields Generated by a Local Hilbert Transform in Optics
dc.typePresentation
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.conference.date23-27 June 2019
dc.conference.name2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)
dc.conference.locationMunich, Germany
dc.eprint.versionPost-print
dc.contributor.institutionInstitúció Catalana de Recerca i Estudis Avançais (ICREA), Passeig Lluís Companys 23, E-08010, Barcelona, Spain; Dep. of Physics, Universitat Politecnica Catalunya (UPC), Barcelona, Spain
dc.contributor.institutionDep. of Physics, Universitat Politecnica Catalunya (UPC), Barcelona, Spain
dc.contributor.institutionDep. of Electronics Engineering, TOBB University of Economics and Technology, Ankara 06560, Turkey
kaust.personAhmed, Waqas Waseem
dc.date.published-online2019-10-17
dc.date.published-print2019-06


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