Role of the illumination spatial-frequency spectrum for ptychography

被引：77

作者：

Guizar-Sicairos, Manuel ^{[1
]}

Holler, Mirko ^{[1
]}

Diaz, Ana ^{[1
]}

Vila-Comamala, Joan ^{[1
]}

Bunk, Oliver ^{[1
]}

Menzel, Andreas ^{[1
]}

机构：

[1] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

来源：

PHYSICAL REVIEW B | 2012年 / 86卷 / 10期

关键词：

X-RAY OPTICS; PHASE-RETRIEVAL; MICROSCOPY; RESOLUTION; TOMOGRAPHY; FIELD;

D O I：

10.1103/PhysRevB.86.100103

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We demonstrate how the spatial-frequency spectrum of the x-ray illumination affects the reconstruction signal-to-noise ratio and resolution of ptychographic imaging. The spatial-frequency spectrum of a focused x-ray probe is enhanced by partially clipping the beam with an aperture near its focus. This approach presents a simple way of enhancing the illumination spectrum without demanding extra efforts in optics fabrication, and we experimentally demonstrate that it provides an improvement in image quality and resolution.

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页数：4

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