Light-sample interaction in microsphere enhanced 2D super-resolution imaging

Show simple item record Maconi, Goran Kassamakov, Ivan Vainikka, T. Arstila, Timo Haeggstrom, Edward
dc.contributor.editor Lehmann, Peter
dc.contributor.editor Osten, Wolfgang
dc.contributor.editor Gonçalves Jr., Armando Albertazzi 2020-05-13T13:22:02Z 2020-05-13T13:22:02Z 2019
dc.identifier.citation Maconi , G , Kassamakov , I , Vainikka , T , Arstila , T & Haeggstrom , E 2019 , Light-sample interaction in microsphere enhanced 2D super-resolution imaging . in P Lehmann , W Osten & A A Gonçalves Jr. (eds) , Optical Measurement Systems for Industrial Inspection XI . Proceedings of SPIE , vol. 11056 , SPIE - the international society for optics and photonics , Bellingham, WA , Optical Measurement Systems for Industrial Inspection , München , Germany , 24/06/2019 .
dc.identifier.citation conference
dc.identifier.other PURE: 132386682
dc.identifier.other PURE UUID: 12ca1403-1ad1-4486-96b6-40ee2282ba8f
dc.identifier.other WOS: 000502140100020
dc.identifier.other ORCID: /0000-0002-1256-7966/work/70953312
dc.description.abstract We simulate the image generated by a microsphere residing in contact on top of an exposed Blu-ray disk surface, when observed by a conventional microscope objective. While microsphere lenses have been used to focus light beyond the diffraction limit and to produce super-resolution images, the nature of the light-sample interaction is still under debate. Simulations in related articles predict the characteristics of the photonic nanojet (PNJ) formed by the microsphere, but so far, no data has been published on the image formation in the far-field. For our simulations, we use the open source package Angora and the commercial software RSoft FullWave. Both packages implement the Finite Difference Time Domain (FDTD) approach. Angora permits us to accurately simulate microscope imaging at the diffraction limit. The RSoft FullWave is able to record the steady-state complex electrical and magnetic fields for multiple wavelengths inside the simulation domain. A microsphere is simulated residing on top of a dielectric substrate featuring sub-wavelength surface features. The scattered light is recorded at the edges of the simulation domain and is then used in the near-field to far-field transformation. The light in the far field is then refocused using an idealized objective model, to give us the simulated microscope image. Comparisons between the simulated image and experimentally acquired microscope images verify the accuracy of our model, whereas the simulation data predicts the interaction between the PNJ and the imaged sample. This allows us to isolate and quantify the near-field patterns of light that enable super-resolution imaging, which is important when developing new micro-optical focusing structures. en
dc.format.extent 7
dc.language.iso eng
dc.publisher SPIE - the international society for optics and photonics
dc.relation.ispartof Optical Measurement Systems for Industrial Inspection XI
dc.relation.ispartofseries Proceedings of SPIE
dc.relation.isversionof 978-1-5106-2791-8
dc.relation.isversionof 978-1-5106-2792-5
dc.rights unspecified
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject Super-resolution imaging
dc.subject FDTD
dc.subject simulation
dc.subject Near-field optics
dc.subject Photonic nanojet
dc.subject 114 Physical sciences
dc.title Light-sample interaction in microsphere enhanced 2D super-resolution imaging en
dc.type Conference contribution
dc.contributor.organization Materials Physics
dc.contributor.organization Department of Physics
dc.description.reviewstatus Peer reviewed
dc.relation.issn 0277-786X
dc.rights.accesslevel openAccess
dc.type.version acceptedVersion

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