4.6 Article

Active control over nanofocusing with nanorod plasmonic antennas

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OPTICS EXPRESS
卷 19, 期 7, 页码 5888-5894

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OPTICAL SOC AMER
DOI: 10.1364/OE.19.005888

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  1. Australian Research Council

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Active control over light nanofocusing in a nanorod plasmonic antenna coupled to a photonic crystal cavity is proposed and demonstrated by means of full-vectorial 3D simulations. By varying the excitation of the cavity with laser beam spot size allows us to achieve a gradual control over light nanofocusing at the tip of the nanoantenna. The demonstrated control mechanism eliminates the need for nonlinear effects or mechanical reconfiguration and represents a step towards the implementation of reliable tunable subwavelength light sources. (c) 2011 Optical Society of America

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