Ptychographic imaging of incoherently illuminated extended objects using speckle correlations.
Appl Opt
; 58(13): 3564-3569, 2019 May 01.
Article
em En
| MEDLINE
| ID: mdl-31044855
ABSTRACT
A scattering layer is usually considered an obstacle to imaging. However, using speckle correlation imaging techniques, the scattering layer effectively acts as a lens. To date, the speckle correlation imaging method has been limited to imaging sparse samples. Here, we demonstrate imaging of incoherently illuminated extended objects in transmission and around-the-corner geometries. We are able to image extended objects by constraining the illumination spot on the object and then scanning the object. A ptychography algorithm is used to reconstruct the extended object. This work demonstrates the applicability of ptychography to spatially incoherent light and enables a new method of imaging in spectral regions where there is limited choice in optics, such as the terahertz, extreme ultraviolet, and x-ray regions.
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MEDLINE
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En
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Appl Opt
Ano de publicação:
2019
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Article