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    Diffusive-light invisibility cloak for transient illumination

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    161222_PRA_Orazbayev_Diffusive-light invisibility cloak for transient illumination.pdf (1.263Mb)
    Date
    2016
    Author
    Orazbayev, Bakhtiyar Upna
    Beruete Díaz, Miguel Upna
    Martínez, Alejandro 
    García Meca, Carlos 
    Version
    Acceso abierto / Sarbide irekia
    xmlui.dri2xhtml.METS-1.0.item-type
    Artículo / Artikulua
    Version
    Versión publicada / Argitaratu den bertsioa
    Project Identifier
    ES/1PE/TEC2014-51902 
    ES/6PN/TEC2011-28664 
    Impact
     
     
     
    10.1103/PhysRevA.94.063850
     
     
     
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    Abstract
    Invisibility in a diffusive-light-scattering medium has been recently demonstrated by employing a scattering-cancellation core-shell cloak. Unlike nondiffusive cloaks, such a device can be simultaneously macroscopic, broadband, passive, polarization independent, and omnidirectional. Unfortunately, it has been verified that this cloak, as well as more sophisticated ones based on transformation opt ... [++]
    Invisibility in a diffusive-light-scattering medium has been recently demonstrated by employing a scattering-cancellation core-shell cloak. Unlike nondiffusive cloaks, such a device can be simultaneously macroscopic, broadband, passive, polarization independent, and omnidirectional. Unfortunately, it has been verified that this cloak, as well as more sophisticated ones based on transformation optics, fail under pulsed illumination, invalidating their use for a variety of applications. Here, we introduce a different approach based on unimodular transformations that enables the construction of unidirectional diffusive-light cloaks exhibiting a perfect invisibility effect, even under transient conditions. Moreover, we demonstrate that a polygonal cloak can extend this functionality to multiple directions with a nearly ideal behavior, while preserving all other features. We propose and numerically verify a simple cloak realization based on a layered stack of two isotropic materials. The studied devices have several applications not addressable by any of the other cloaks proposed to date, including shielding from pulse-based detection techniques, cloaking undesired scattering elements in time-of-flight imaging or high-speed communication systems for diffusive environments, and building extreme optical security features. The discussed cloaking strategy could also be applied to simplify the implementation of thermal cloaks. [--]
    Publisher
    American Physical Society
    Published in
    Physical Review A, 94, 063850 (2016)
    Departament
    Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica y Electrónica / Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektriko eta Elektronikoa Saila
     
    Publisher version
    https://doi.org/10.1103/PhysRevA.94.063850
    URI
    https://hdl.handle.net/2454/23128
    Sponsorship
    This work was supported in part by the Spanish Ministerio de Economía y Competitividad under contracts No. TEC2014- 51902-C2-1-R and No. TEC2014- 51902-C2-2-R. B.O. is sponsored by the Spanish Ministerio de Economía y Competitividad under Grant No. FPI BES-2012-054909. M.B. is sponsored by the Spanish Ministerio de Economía y Competitividad via Grant No. RYC-2011-08221. C.G.-M. acknowledges support from Generalitat Valenciana through the VALi+d postdoctoral program (Grant No. APOSTD/2014/044).
    Appears in Collections
    • Artículos de revista DIEE - IEES Aldizkari artikuluak [346]
    • Artículos de revista - Aldizkari artikuluak [2947]
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