We present a novel sensor that measures the entire spatial coherence function within an aperture by use of a variable astigmatic lens. This sensor permits digital capture and processing of partially coherent fields. We demonstrate the sensor by sampling and computing the coherent modes of a three-dimensional incoherent source.
© 2000 Optical Society of America
Daniel M. Marks, Ronald A. Stack, and David J. Brady, "Astigmatic coherence sensor for digital imaging," Opt. Lett. 25, 1726-1728 (2000)