Astigmatic coherence sensor for digital imaging.
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.
Marks
D M
DM
Beckman Institute for Science and Technology and Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 405 N. Mathews Avenue, Urbana, Illinois 61801, USA.
Stack
R A
RA
Brady
D J
DJ