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    Route to strong localization of light: The role of disorder

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    Type
    Article
    Authors
    Molinari, Diego P.
    Fratalocchi, Andrea cc
    KAUST Department
    Applied Mathematics and Computational Science Program
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering Program
    PRIMALIGHT Research Group
    Physical Science and Engineering (PSE) Division
    Date
    2012-07-23
    Online Publication Date
    2012-07-23
    Print Publication Date
    2012-07-30
    Permanent link to this record
    http://hdl.handle.net/10754/562013
    
    Metadata
    Show full item record
    Abstract
    By employing Random Matrix Theory (RMT) and firstprinciple calculations, we investigated the behavior of Anderson localization in 1D, 2D and 3D systems characterized by a varying disorder. In particular, we considered random binary layer sequences in 1D and structurally disordered photonic crystals in two and three dimensions. We demonstrated the existence of a unique optimal degree of disorder that yields the strongest localization possible. In this regime, localized modes are constituted by defect states, which can show subwavelength confinement properties. These results suggest that disorder offers a new avenue for subwavelength light localization in purely dielectric media. © 2012 Optical Society of America.
    Citation
    Molinari, D., & Fratalocchi, A. (2012). Route to strong localization of light: the role of disorder. Optics Express, 20(16), 18156. doi:10.1364/oe.20.018156
    Sponsors
    For computer time, this research used the resources of the Supercomputing Laboratory at King Abdullah University of Science & Technology (KAUST) in Thuwal, Saudi Arabia. Numerical simulations have been performed with our NANOCPP code, which is an homemade, highly scalable 2D/3D FDTD code expressively developed for large scale parallel simulations of disordered materials. D. Molinari acknowledges partial support from PRIN MIUR 2009. The authors thank G. Ruocco and P. de Bernardis for fruitful discussions.
    Publisher
    The Optical Society
    Journal
    Optics Express
    DOI
    10.1364/OE.20.018156
    PubMed ID
    23038363
    ae974a485f413a2113503eed53cd6c53
    10.1364/OE.20.018156
    Scopus Count
    Collections
    Articles; Applied Mathematics and Computational Science Program; Physical Science and Engineering (PSE) Division; PRIMALIGHT Research Group; Electrical and Computer Engineering Program; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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