Efficient use of coherent X-rays in ptychography: Towards high-resolution and high-throughput observation of weak-phase objects

Nicolas Burdet, Kei Shimomura, Makoto Hirose, Akihiro Suzuki, Yukio Takahashi

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The efficient use of coherent X-rays is a crucial issue for ptychography at synchrotron facilities. We propose a method for optimizing the population of coherent modes for an optimal resolution. We show by a wave optical simulation that the intensity of a nearly diffraction-limited focusing X-ray beam can be described as an incoherent sum of a few orthogonal modes and that the first-mode flux significantly increases within a secondary source size by relaxing the requirement on the degree of coherence. We experimentally demonstrate it by means of multiple-mode ptychography with a synchrotron X-ray and achieve the high-resolution imaging of a weak-phase object. The present approach enables the high-resolution and high-throughput observation of weak-phase objects in materials science and biology.

Original languageEnglish
Article number071103
JournalApplied Physics Letters
Volume108
Issue number7
DOIs
Publication statusPublished - 2016 Feb 15
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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