Abstract
Imaging devices based on wire media (WM) can transmit deep subwavelength information over optically long distances by supporting high spatial frequencies. However, for perfect imaging WM need to be used at the Fabry-Perot resonances (FPRs), to avoid resonances of evanescent waves detrimental to image quality. Another source of artefacts are diffracting ordinary waves, which may add noise to the image. The role of ordinary waves becomes dominant when attempting to image large objects. Here we introduce novel approaches to removing artefacts in WM based hyprlenses so that they can be used for broadband imaging.
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