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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