Search results
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Title
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Complex photonic crystals for broadband "all-angle" self-collimation
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Author
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Chuang, Yi-Chen
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Date Created
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2010
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Subjects--Topical
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Optics
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Description
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Self-collimation is a dispersion property of many photonic crystals (PCs), in which light beam can propagate free of divergence in the PCs. While self-collimation is a desired property for applications related to wave guiding and light collection,...
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Title
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Electromagnetic Wave Phenomena In Periodic Metastructures
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Author
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Schenk, John
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Date Created
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2010
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Subjects--Topical
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Electrical engineering, Optics, System theory
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Description
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There is an active effort toward the development of negative index metamaterials for application in high-resolution imaging. In particular, engineering an artificial material exhibiting an index of exactly -1, may permit sub-wavelength imaging. Th...
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Title
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PHASE STRUCTURED WAVEFIELDS WITH PHASE SINGULARITIES AND BISPECTRAL PROPERTIES
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Author
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Scipioni, Marco
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Date Created
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2010
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Subjects--Topical
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Optics
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Description
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The work presented in this dissertation can be subdivided into two parts. The first part illustrates the novel use of a 37 actuator segmented deformable mirror for the creation of optical vortex beams ranging in topological charge from 1 to 10. Th...
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Title
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SIGNAL PROCESSING BASED METHOD FOR SOLVING INVERSE SCATTERING PROBLEMS
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Author
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Shahid, Umer
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Date Created
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2010
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Subjects--Topical
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Optics, Biomedical engineering, Remote sensing
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Description
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The problem of reconstructing an image of the permittivity distribution inside a penetrable and strongly scattering object from a finite number of noisy scattered field measurements has always been very challenging because it is ill-posed in natur...