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We explore two main representative fields of plasmonics: plasmonic focusing and waveguiding. We overview and discuss several methods of focusing and waveguiding electromagnetic fields in subwavelength regime using plasmonics.
A method for rendering bundle beams by utilizing the destructive interference effects of beams from multiple subwavelength slits surrounded by dielectric surface gratings is proposed. With oblique incident light on the multiple slits, it is possible to control the phases of surface plasmon polaritons (SPPs) induced in the slits. When these phases have a certain relationship, beams from the SPPs excited...
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