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dc.contributor.authorQuaranta, G.
dc.contributor.authorBasset, G.
dc.contributor.authorMartin, O. J. F.
dc.contributor.authorGallinet, B.
dc.identifier.citationin Nanoengineering: Fabrication, Properties, Optics, and Devices Xiv. vol. 10354 (Issue), E. M. Campo, E. A. Dobisz, and L. A. Eldada, Eds., ed Bellingham: Spie-Int Soc Optical Engineering, 2017.
dc.description.abstractA novel thin-film single-layer structure based on resonant waveguide gratings (RWGs) allows to engineer selective color filtering and steering of white light. The unit cell of the structure consists of two adjacent finite-length and cross-talking RWGs, where the former acts as in-coupler and the latter acts as out-coupler. The structure is made by only one nano-imprint lithography replication and one thin film layer deposition, making it fully compatible with up-scalable fabrication processes. We characterize a fabricated optical security element designed to work with the flash and the camera of a smartphone in off-axis light steering configuration, where the pattern is revealed only by placing the smartphone in the proper position. Widespread applications are foreseen in a variety of fields, such as multifocal or monochromatic lenses, solar cells, biosensors, security devices and seethrough optical combiners for near-eye displays.
dc.subjectbeam steering, white light source, up-scalable fabrication, resonant, waveguide grating, guided mode resonance, lithography
dc.titleSteering and filtering white light with resonant waveguide gratings
dc.typeJournal Article

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