Abstract
A super-resolution diffraction-free lens was constructed using a negative refractive index medium (NRIM) to analyze the rapid growth of evanescent waves. The evanescent waves was enhanced by increasing the thickness of the NRIM. The superlens theory lifted the resolution restriction inherent in conventional optics, with latest avenues to optical imaging using metal. The results show that the evanescent waves rapidly grows with the film thickness up to about 50 nm, after which it decays as loss becomes significant.