期刊
OPTICS COMMUNICATIONS
卷 422, 期 -, 页码 8-16出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2017.11.084
关键词
Digital holographic microscopy; Quantitative phase microscopy; Interferometric phase microscopy; Decoupling; Tomographic phase microscopy; Refractive index
类别
资金
- European Research Council (ERC) [678316]
- Tel Aviv University Center for Light-Matter Interaction
Digital holographic microscopy is a thriving imaging modality that attracted considerable research interest in quantitative biological cell imaging due to its ability to not only create excellent label-free contrast, but also supply valuable physical information regarding the density and dimensions of the sample with nanometer-scale axial sensitivity. This technique records the interference pattern between a sample beam and a reference beam, and by digitally processing it, one can reconstruct the optical path delay between these beams. Per each spatial point, the optical path delay map is proportional to the product of the sample physical thickness and the integral refractive index of the sample. Since the refractive index of the cell indicates its contents without the need for labeling, it is highly beneficial to decouple the cell physical thickness from its refractive index profile. This manuscript reviews various approaches of extracting the refractive index from digital holographic microscopy measurements of cells. As soon as the refractive index of the cell is available, it can be used for either biological assays or medical diagnosis, as reviewed in this manuscript. (c) 2017 Elsevier B. V. All rights reserved.
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