High-resolution ptychographic imaging enabled by high-speed multi-pass scanning

• DOI: 10.1364/oe.460232
• Publication Date: 2022-06-21T16:30:08Z
• Authors: Junjing Deng; Yudong Yao; Yi Jiang; Si Chen; Tim M. Mooney; Jeffrey A. Klug; Fabricio S. Marin; Christian Roehrig; Ke Yue; Curt Preissner; Zhonghou Cai; Barry Lai; Stefan Vogt
• Keywords: Ptychography; Spatial frequency; Temporal resolution

As a coherent diffraction imaging technique, ptychography provides high-spatial resolution beyond Rayleigh's criterion of the focusing optics, but it is also sensitively affected by decoherence coming from spatial and temporal variations in experiment. Here we show that high-speed ptychographic data acquisition with short exposure can effectively reduce impact experimental variations. To reach cumulative dose required for given resolution, further demonstrate continuous multi-pass scan via achieve high-resolution imaging. This low-dose strategy shown to be more dose-efficient, has potential radiation-sensitive sample studies time-resolved