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A Challenge to Tunable Metamaterial Optical Retarder: Au Nanograting and its Integration with Microelectromechanical Actuators

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Abstract

Optical metasurface attracts interest as novel micro-optical elements including flat lenses, polarization converters, retarders, waveplates and so on. Metasurfaces are able to have tailored in-plane distribution of optical characteristics. Especially, metasurface optical retarders have opened up advanced optical elements applications such as Laguerre-Gaussian beam converters, optical vortex converters, and computer-generated holography. However, plasmonic metasurfaces have a tradeoff problem between transmittance and retardation because of the lossy nature of metal.

© 2017 Japan Society of Applied Physics, Optical Society of America

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