期刊
PHYSICAL REVIEW A
卷 87, 期 5, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.87.053850
关键词
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资金
- EPSRC Doctoral Prize Fellowship
- EPSRC Basic Technology [EP/E034055]
- EPSRC [EP/I022562/1, EP/E034055/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/I022562/1, EP/E034055/1] Funding Source: researchfish
Coherent diffractive imaging (CDI) is a means of overcoming the resolution and image contrast limitations of electron and x-ray lenses. The central tenet of the method is that the intensity of the diffraction pattern must be measured on a sufficiently fine pixel pitch, which is inversely related to the size of the illuminated region of the object. We show here that ptychography-a form of CDI that uses many diffraction patterns-is not subject to this constraint. Using a variant of the ePIE inversion algorithm, we demonstrate experimentally that the sampling requirement in ptychography is independent of illumination size.
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