Diffrimoscopic Image Formation under Partially Coherent Illumination (Slits and Opaque Strips)

Publisher Website
Google Scholar
Abstract
Intensity distributions in diffrimoscopic images have been derived for rectangular objects like slits and opaque strips under partially coherent illumination. The illuminating slits, objects, obstructions and apertures are assumed to be of infinite length in one direction and of finite width perpendicular to it. Therefore the mathematical treatment reduces to that of one dimension. Expressions representing the complex amplitudes and the intensity distribution in the image plane have been suitably split to show separately the interfering effect of one edge over the other and the effect of partial coherence. The centre of the dark fringe does not always coincide with the geometric image of the edge. The relative shifts between them have been shown to vary almost linearly with the degree of coherence. The effect of the degree of coherence upon the intensities at the geometric image of the edge and at the centre of the image has been discussed. The effects of the widths of obstructions, aperture and objects upon the intensity distributions have also been discussed.

This publication has 6 references indexed in Scilit: