Partially coherent diffraction by a defocused slit aperture in the presence of image motion and transverse vibrations

This paper presents an analysis of the far-field diffraction pattern of partially spatially coherent light by an optical system with a defocused slit aperture in the presence of linear image motion and sinusoidal transverse vibrations. For partially coherent light sinc and gaussian forms of correlations in the two points over the diffracting aperture are employed. The results for the irradiance distribution have been presented graphically for typical values of the coherence, defocusing and vibrational parameters.