Numerical and experimental study of partial coherence for near-field and far-field ptychography

Xu, Wenhui1,2; Ning, Shoucong3; Zhang, Fucai2

2021-11-22

10.1364/OE.445978

OPTICS EXPRESS   影响因子和分区

1094-4087

High degree of coherence is essential in coherent diffraction imaging (CDI). The coherence requirement on the light source varies with the experimental configuration. As a scanning variant of CDI, ptychography has shown great potential for extensive applications. To determine the influence of partially temporal and spatial coherence on near-and far-field ptychography, we have performed a series of numerical simulations and visible light optical experiments. We demonstrated that the near-field is more robust to spatial and temporal decoherence than the far-field. In addition, the far-field is found to be more sensitive to spatial decoherence than to temporal decoherence. Our experiments also show that a known probe estimate with good spatial coherence enables the retrieval qualities to be enhanced dramatically and helps prevent falling into the local minimums in the reconstruction process. Our work would provide a valuable reference for implementing ptychography with sources of limited coherence. (C) 2021 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

SCI ; EI

英语

通讯

National Natural Science Foundation of China[11775105,12074167] ; Science and Technology Planning Project of Shenzhen Municipality[KQTD20170810110313773] ; SUSTech[6941806]

Optics

Optics

WOS:000722251200134

OPTICAL SOC AMER

20220711646919

Light ; Light sources

Light/Optics:741.1 ; Quantum Theory; Quantum Mechanics:931.4

PHYSICS

Web of Science

1.Harbin Inst Technol, Harbin 150001, Peoples R China
2.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China
3.Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117583, Singapore

Xu, Wenhui,Ning, Shoucong,Zhang, Fucai. Numerical and experimental study of partial coherence for near-field and far-field ptychography[J]. OPTICS EXPRESS,2021,29(24):40652-40667.

Xu, Wenhui,Ning, Shoucong,&Zhang, Fucai.(2021).Numerical and experimental study of partial coherence for near-field and far-field ptychography.OPTICS EXPRESS,29(24),40652-40667.

Xu, Wenhui,et al."Numerical and experimental study of partial coherence for near-field and far-field ptychography".OPTICS EXPRESS 29.24(2021):40652-40667.