Abstract
Manipulating light is highly desired in photonics research. Restricted by the variable range of permittivity for natural materials, conventional photonic elements are often optically thick and their light-manipulation abilities are quite limited by chemical composition. Plasmonic metamaterials are artificial composite by sub-wavelength local resonance structures of electric and/or magnetic type with novel electromagnetic property such as negative refraction and perfect lens, etc. [1, 2]. Recently, ultra-thin metasurfaces with abrupt-varying material properties provided by the geometries of metallic nanostructures on the interface were found to exhibit boardband light-manipulation abilities [3- 5].
© 2014 Japan Society of Applied Physics, Optical Society of America
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