Abstract

The point spread function of an optical system (PSF) with asymmetric apodization has been found possess a so-called ‘good side’ and a ‘bad side’. The good side has decreased side-lobes whereas the bad-side shows increased side-lobes. This has been observed when the aperture is divided into three parts viz., two regions with apodizers and a central region as a transparent one. The asymmetry in the PSF has been found to increase with the width of the edge-strips and is seen to decrease with an increased apodization of the central region.

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