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dc.contributor.authorBianchi, Silvio
dc.contributor.authorRajamanickam, V.
dc.contributor.authorFerrara, Lorenzo
dc.contributor.authorDi Fabrizio, Enzo M.
dc.contributor.authorLiberale, Carlo
dc.contributor.authorDi Leonardo, Roberto
dc.date.accessioned2015-08-03T10:42:22Z
dc.date.available2015-08-03T10:42:22Z
dc.date.issued2013
dc.identifier.issn01469592
dc.identifier.pmid24281476
dc.identifier.doi10.1364/OL.38.004935
dc.identifier.urihttp://hdl.handle.net/10754/562551
dc.description.abstractThe use of individual multimode optical fibers in endoscopy applications has the potential to provide highly miniaturized and noninvasive probes for microscopy and optical micromanipulation. A few different strategies have been proposed recently, but they all suffer from intrinsically low resolution related to the low numerical aperture of multimode fibers. Here, we show that two-photon polymerization allows for direct fabrication of micro-optics components on the fiber end, resulting in an increase of the numerical aperture to a value that is close to 1. Coupling light into the fiber through a spatial light modulator, we were able to optically scan a submicrometer spot (300 nm FWHM) over an extended region, facing the opposite fiber end. Fluorescence imaging with improved resolution is also demonstrated. © 2013 Optical Society of America.
dc.description.sponsorshipThe research leading to these results has received funding from the European Research Council under the European Union's Seventh Framework Programme (FP7/2007-2013)/ERC grant agreement no. 307940. We also acknowledge funding from MIUR-FIRB project no. RBFR08WDBE.
dc.publisherOptical Society of America
dc.relation.urlhttp://arxiv.org/abs/arXiv:1405.7548v1
dc.titleFocusing and imaging with increased numerical apertures through multimode fibers with micro-fabricated optics
dc.typeArticle
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentMaterials Science and Engineering Program
dc.identifier.journalOptics Letters
dc.contributor.institutionUniv Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy
dc.contributor.institutionIst Italiano Tecnol, I-16163 Genoa, Italy
dc.contributor.institutionMagna Graecia Univ Catanzaro, BioNEM Lab, Dipartimento Med Sperimentale & Clin, I-88100 Catanzaro, Italy
dc.contributor.institutionIPCF UOS Roma, Natl Res Council Italy, I-00185 Rome, Italy
dc.identifier.arxividarXiv:1405.7548
kaust.personDi Fabrizio, Enzo M.


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