Phase retrieval based on the tilting movement of the modulator

Jun Lan; Cheng Xu; Hui Pang; Jinsong Chen; Zhou Lan; Cheng Xue; Song Hu; Yong Yang

doi:10.1117/12.3008007

18 December 2023 Phase retrieval based on the tilting movement of the modulator

Jun Lan, Cheng Xu, Hui Pang, Jinsong Chen, Zhou Lan, Cheng Xue, Song Hu, Yong Yang

Proceedings Volume 12967, AOPC 2023: Computing Imaging Technology; 129670D (2023) https://doi.org/10.1117/12.3008007
Event: Applied Optics and Photonics China 2023 (AOPC2023), 2023, Beijing, China

Abstract

In lensless imaging, encoding the diffraction field recorded by the detector by adding a laterally or axially moving mask is the most common configuration. In this paper, we propose a new scheme for improving the speed and accuracy of complex object reconstruction. Particularly, a random binary amplitude mask is placed upstream of the object and moves obliquely to introduce speckle illumination on the object plane. The object and the detector are stationary in the experiment. Inspired by the idea of ptychography, the extended ptychographic iterative engine algorithm is adopted to reconstruct the object and unknown mask simultaneously. It is verified by simulation that our proposed method can improve the reconstruction resolution of the complex object compared with the conventional method. Further, the relevant parameters of the proposed scheme are also optimized. This improvement will facilitate the widespread application of lensless imaging in biology and materials science.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jun Lan, Cheng Xu, Hui Pang, Jinsong Chen, Zhou Lan, Cheng Xue, Song Hu, and Yong Yang "Phase retrieval based on the tilting movement of the modulator", Proc. SPIE 12967, AOPC 2023: Computing Imaging Technology, 129670D (18 December 2023); https://doi.org/10.1117/12.3008007

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