Abstract
Imaging speed and spatial resolution are key factors in optical diffraction tomography (ODT), while they are mutually exclusive in 3D refractive index imaging. This paper presents a multi-harmonic structured illuminationbased optical diffraction tomography (MHSI-ODT) to acquire 3D refractive index (RI) maps of transparent samples. MHSI-ODT utilizes a digital micromirror device (DMD) to generate structured illumination containing multiple harmonics. For each structured illumination orientation, four spherical spectral crowns are solved from five phase-shifted holograms, meaning that the acquisition of each spectral crown costs 1.25 raw images. Compared to conventional SI-ODT, which retrieves two spectral crowns from three phase-shifted raw images, MHSI-ODT enhances the imaging speed by 16.7% in 3D RI imaging.Meanwhile, MHSI-ODT exploits both the 1st-order and the 2nd-order harmonics; therefore, it has a better intensity utilization of structured illumination. We demonstrated the performance of MHSI-ODT by rendering the 3D RI distributions of 5 mpolystyrene (PS) microspheres and biological samples.
Original language | English |
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Pages (from-to) | 9199-9206 |
Number of pages | 8 |
Journal | Applied Optics |
Volume | 62 |
Issue number | 35 |
DOIs | |
State | Published - 10 Dec 2023 |
Bibliographical note
Publisher Copyright:©2023 Optica Publishing Group.
Funding
Funding. National Key Research and Development Program of China (2022YFE0100700); National Natural Science Foundation of China (62335018, 62075177, 62105251, 12104354); 111 Project; Natural Science Basic Research Program of Shaanxi Province (2022JQ-788); Natural Science Foundation of Shaanxi Province (2023JCQN0731, 2023JCYB518); Fundamental Research Funds for the Central Universities (QTZX23008, QTZX23013, QTZX23024, XJSJ23137).
Funders | Funder number |
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National Natural Science Foundation of China | 62075177, 12104354, 62105251, 62335018 |
Natural Science Foundation of Shaanxi Province | 2023JCQN0731, 2023JCYB518 |
National Key Research and Development Program of China | 2022YFE0100700 |
Fundamental Research Funds for the Central Universities | XJSJ23137, QTZX23008, QTZX23013, QTZX23024 |
Higher Education Discipline Innovation Project | |
Natural Science Basic Research Program of Shaanxi Province | 2022JQ-788 |