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Proceedings Paper

Quantitative phase imaging camera with a weak diffuser based on the transport of intensity equation
Author(s): Linpeng Lu; Jiasong Sun; Jialin Zhang; Yao Fan; Qian Chen; Chao Zuo
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Paper Abstract

We present an efficient quantitative phase imaging camera with a weak diffuser (QPICWD) based on the transport of intensity equation (TIE). The compact QPICWD measures object induced phase delay under low-coherence quasi-monochromatic illumination via examining the deformation of the speckle intensity pattern. Analysing the speckle deformation with an ensemble average of the geometric ow, we can achieve the high-resolution distortion field by the TIE. We present some applications for the proposed design involving nondestructive optical testing of microlens array with nanometric thickness and imaging of fixed and live unstained HeLa cells. Since the designed QPICWD needs no modification of the common bright-field microscope or additional accessories, it may advance QPI as a widely useful tool for biological analysis at subcellular levels.

Paper Details

Date Published: 13 May 2019
PDF: 5 pages
Proc. SPIE 10990, Computational Imaging IV, 1099009 (13 May 2019); doi: 10.1117/12.2521367
Show Author Affiliations
Linpeng Lu, Nanjing Univ. of Science and Technology (China)
Jiasong Sun, Nanjing Univ. of Science and Technology (China)
Jialin Zhang, Nanjing Univ. of Science and Technology (China)
Yao Fan, Nanjing Univ. of Science and Technology (China)
Qian Chen, Nanjing Univ. of Science and Technology (China)
Chao Zuo, Nanjing Univ. of Science and Technology (China)


Published in SPIE Proceedings Vol. 10990:
Computational Imaging IV
Abhijit Mahalanobis; Lei Tian; Jonathan C. Petruccelli, Editor(s)

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