Abstract
Lensless ghost imaging using sunlight could be used to take a picture of a distant object with features of 130 µm image resolution (the resolution of 130 µm is for a peak wavelength of 500 nm of sunlight). Because of the unavailability of a detection system to distinguish the very wide bandwidth of sunlight, the visibility of the ghost image is very low. This article reports on a study of lensless ghost imaging with sunlight to achieve 100% image visibility by taking advantage of the intensity-fluctuation correlation of sunlight.
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