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Active off-axis directional beaming of optical field diffracted by double-sided plasmonic surface gratings

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Abstract

A nano-scale active directional beaming device based on mechanical actuation of double sided plasmonic surface gratings is proposed. It is shown that asymmetric mechanical actuation of optimally designed plasmonic surface gratings surrounding a subwavelength metal slit can produce off-axis beaming with controllable beaming angle from -5.4(deg) to 5.4(deg).

© 2013 Optical Society of America

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