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ORIGINAL RESEARCH article
Front. Phys.
Sec. Optics and Photonics
Volume 12 - 2024 |
doi: 10.3389/fphy.2024.1485687
This article is part of the Research Topic Novel Optical Measurement and Imaging Technologies using Broadband Light Sources View all 3 articles
Structured Illumination Lensless Digital Holographic Microscopy (SI-LDHM)
Provisionally accepted
Juanjuan Zheng
1
Xuhong Guo
1
Ying Ma
1
Kai Wen
1
Sha An
1
Xiaofang Wang
1
Peng Gao
1
Jiaming Qian
2
Chao Zuo
2*
Peng Gao
1*- 1 School of Physics, Xidian University, Xi'an, China
- 2 School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu Province, China
In this work, we propose a structured-illumination lensless digital holographic microscopy (SI-LDHM). SI-LDHM illuminates a sample with 24 structured illuminations (8 orientations × 3 phase shifts) and records the defocused interferogram formed by two copies of object waves along the ±1 st diffraction orders of each SI. The reconstructed object waves under different illumination orientations are respectively propagated to the sample plane along the +1 st diffraction order and then averaged, thus yielding a clean image without the artifact of twin images. Experimental results demonstrated that thanks to the multi-oriented SI strategy, the twin image in SI-LDHM is sevenfold reduced compared to conventional DHM, while the spatial resolution is 1.15 times higher.
Keywords: Quantitative phase microscopy (QPM), lensless digital holographic microscopy (LDHM), Structured illumination, spatial light modulator, resolution enhancement
Received: 24 Aug 2024; Accepted: 10 Sep 2024.
Copyright: © 2024 Zheng, Guo, Ma, Wen, An, Wang, Gao, Qian, Zuo and Gao. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Chao Zuo, School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing, 210094, Jiangsu Province, China
Peng Gao, School of Physics, Xidian University, Xi'an, China
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