Enhancing Multi-Distance Phase Retrieval via Unequal Interval Measurements

Xu, Cheng and Yuan, Wei and Cao, Axiu and Xue, Li and Deng, Qiling and Pang, Hui and Fu, Yongqi (2021) Enhancing Multi-Distance Phase Retrieval via Unequal Interval Measurements. Photonics, 8 (2). p. 48. ISSN 2304-6732

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Abstract

In the conventional methods of multi-distance phase retrieval, the diffraction intensity patterns are recorded at equal intervals, which can induce slow convergence or stagnation in the subsequent reconstruction process. To solve this problem, a measurement method with unequal intervals is proposed in this paper. The interval spacings between adjacent measurement planes are decreased gradually. A large gap accelerates retrieval progress, and a short span helps to recover detailed information. The proposed approach makes full use of the available measured dataset and simultaneously generates variations in diversity amplitude, which is a crucial issue for the techniques of multi-image phase retrieval. Both computational simulations and experiments are performed. The results demonstrate that this method can improve the convergence speed by 2 to 3 times and enhance the quality of reconstruction results in comparison to that of the conventional methods.

Item Type: Article
Uncontrolled Keywords: phase retrieval; unequal interval; multi-distance
Subjects: STM Repository > Multidisciplinary
Depositing User: Managing Editor
Date Deposited: 22 Mar 2024 04:16
Last Modified: 22 Mar 2024 04:16
URI: http://classical.goforpromo.com/id/eprint/1429

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