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Proceedings Paper

Digital micromirror device-based high-speed and high-resolution quantitative phase imaging
Author(s): Cheng Zheng; Renjie Zhou
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Paper Abstract

We demonstrate a high-speed and high-resolution quantitative phase imaging method by implementing a synthetic aperture technique through using digital micromirror devices (DMDs). DMDs provide high speed steering of the illumination beam angle upon the sample that induces sample frequency shift, which is the basis of achieving high resolution in the quantitative phase imaging (QPI) system. With a high-speed camera for image acquisition, our QPI system achieves synthetic aperture imaging at >25 frame per second (fps). The high-speed imaging capability of the system allows for better observation of samples dynamics, especially in live biological structures, where motions could result in degraded imaging quality. In experiments, our synthetic aperture-based QPI system has resolved sub-diffraction limited structures of 220 nm periods and quantified red blood cell membrane fluctuations, which opens new avenues in material metrology and biological imaging applications.

Paper Details

Date Published: 4 March 2019
PDF: 6 pages
Proc. SPIE 10932, Emerging Digital Micromirror Device Based Systems and Applications XI, 1093206 (4 March 2019); doi: 10.1117/12.2511017
Show Author Affiliations
Cheng Zheng, The Chinese Univ. of Hong Kong (Hong Kong, China)
Massachusetts Institute of Technology (United States)
Renjie Zhou, The Chinese Univ. of Hong Kong (Hong Kong, China)


Published in SPIE Proceedings Vol. 10932:
Emerging Digital Micromirror Device Based Systems and Applications XI
Michael R. Douglass; John Ehmke; Benjamin L. Lee, Editor(s)

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