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

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 the decoherence coming from the spatial and temporal variations in the experiment. Here we show that high-speed ptycho...

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Veröffentlicht in:Optics express 2022-07, Vol.30 (15), p.26027-26042
Hauptverfasser: Deng, Junjing, Yao, Yudong, Jiang, Yi, Chen, Si, Mooney, Tim M., Klug, Jeffrey A., Marin, Fabricio S., Roehrig, Christian, Yue, Ke, Preissner, Curt, Cai, Zhonghou, Lai, Barry, Vogt, Stefan
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Sprache:eng
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Zusammenfassung: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 the decoherence coming from the spatial and temporal variations in the experiment. Here we show that high-speed ptychographic data acquisition with short exposure can effectively reduce the impact from experimental variations. To reach a cumulative dose required for a given resolution, we further demonstrate that a continuous multi-pass scan via high-speed ptychography can achieve high-resolution imaging. This low-dose scan strategy is shown to be more dose-efficient, and has potential for radiation-sensitive sample studies and time-resolved imaging.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.460232