High-quality reconstruction of coherent modulation imaging using weak cascade modulators

He，Zhenfei1; Wang，Bingyang1; Bai，Jiaming2; Barbastathis，George3; Zhang，Fucai1

2020-07-01

10.1016/j.ultramic.2020.112990

ULTRAMICROSCOPY   影响因子和分区

0304-3991

1879-2723

Coherent modulation imaging (CMI) has been shown to be an effective lensless diffraction approach to imaging general extended samples with fast algorithmic convergence and high robustness to data imperfection. Being a single-shot technique, CMI holds a high potential for imaging dynamics with ultrafast pulses like the ones from free-electron lasers. In the reported work, strong modulators have been suggested for CMI to have the optimal performance, which may be an obstacle for the wide adoption of the method. Here we show that with our improved reconstruction algorithm the requirements on the modulation depth and feature size of a modulator can be relaxed. Furthermore, we demonstrate that when cascade configuration is used, the modulators can be even weaker while providing lower image errors in reconstruction than the case of a single modulator. Detailed numerical studies in both far-field and near-field experiment geometry are given via simulation. A relaxed requirement on modulators in CMI could pave the way for its wide use in biology and materials science.

Coherent diffraction imaging Phase microscopy Phase modulation Phase retrieval Single-shot imaging

SCI ; EI

英语

第一 ; 通讯

National Natural Science Foundation of China[11775105]

Microscopy

Microscopy

WOS:000540024200003

ELSEVIER

20202008658852

Modulators ; Diffraction ; Electrons ; Image processing ; Free electron lasers

Modulators, Demodulators, Limiters, Discriminators, Mixers:713.3 ; Data Processing and Image Processing:723.2 ; Free Electron Lasers:744.5

CHEMISTRY

2-s2.0-85084506963

Scopus

1.Department of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzhen,1088 Xueyuan Avenue,518055,China
2.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,1088 Xueyuan Avenue,518055,China
3.3D Optics Laboratory,Mechanical Engineering,Massachusetts Institute of Technology,Cambridge,02139,United States

He，Zhenfei,Wang，Bingyang,Bai，Jiaming,et al. High-quality reconstruction of coherent modulation imaging using weak cascade modulators[J]. ULTRAMICROSCOPY,2020,214.

He，Zhenfei,Wang，Bingyang,Bai，Jiaming,Barbastathis，George,&Zhang，Fucai.(2020).High-quality reconstruction of coherent modulation imaging using weak cascade modulators.ULTRAMICROSCOPY,214.

He，Zhenfei,et al."High-quality reconstruction of coherent modulation imaging using weak cascade modulators".ULTRAMICROSCOPY 214(2020).