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We study on the negative and positive effect of surface roughness and loss coefficient on subwavelength imaging of the superlens structure. It has been found that even though surface roughness enables more transmission of high spatial frequency components, the random interferential noise between neighborhood images becomes more severe with increasing distortion. We show that additional loss is able...
Far field characterization of light propagation in metamaterial with multi metal-dielectric layers is performed by introducing rough surface and nano grating structures. Light directional imaging and evanescent wave moiré fringes are observed in experiments.
Micro lens array (MLA) is the critical element for Shack-Hartmann wave front sensor. But conventional MLA based on diffractive optics shows strong chromatic aberration, which cause the MLA only works for narrow band. The broad band MLA requires continuous profile, which can not be fabricated using binary optics fabrication technique. In this presentation, we present the fabrication for continuous...
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