Abstract
Abstract The focusing properties of partially coherent twisted anisotropic Gaussian–Schell model (GSM) beams by a thin astigmatic lens are studied in detail by using the newly derived tensor ABCD law. The intensity distribution, the evolutions of the beam spot area and the twisted factor of the focused anisotropic GSM beams are calculated and illustrated graphically. The results show that the focusing properties of twisted anisotropic GSM beams are closely related with the spatial coherence of the beams.
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