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Observing dynamics of transparent samples by harmonically matched grating-based full-field quadrature phase interferometer

Wu, Jigang and Yaqoob, Zahid and Heng, Xin and Lee, Lap Man and Cui, Xiquan and Yang, Changhuei (2008) Observing dynamics of transparent samples by harmonically matched grating-based full-field quadrature phase interferometer. In: Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XV. Proceedings of SPIE. No.6861. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 686102. ISBN 9780819470362. https://resolver.caltech.edu/CaltechAUTHORS:20180716-104437388

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Abstract

Our group has reported the use of harmonically matched diffraction grating for full-field quantitative phase imaging. In this paper, we show the improvement of this technique and the application in observing dynamics of transparent samples. By using the grating as a beam splitter/combiner in an interferometer, we are able to obtain non-trivial phase difference between the output ports of the grating. We have built a Mach-Zehnder interferometer using the holographic grating with 600 and 1200 lines/mm spacing. Two CCD cameras at the output ports of the grating-based Mach-Zehnder interferometer are used to record the full-field quadrature interferograms, which are subsequently processed to reconstruct the phase image. Since the two quadrature interferograms are acquired at the same time, the imaging speed of the system is limited only by the frame rate of the CCD cameras. We have demonstrated the capability of our system by observing dynamics of transparent samples.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1117/12.759210DOIArticle
ORCID:
AuthorORCID
Yang, Changhuei0000-0001-8791-0354
Additional Information:© 2008 Society of Photo-Optical Instrumentation Engineers (SPIE).
Subject Keywords:Diffraction gratings, quadrature phase interferometry, medical and biological imaging
Series Name:Proceedings of SPIE
Issue or Number:6861
Record Number:CaltechAUTHORS:20180716-104437388
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180716-104437388
Official Citation:Jigang Wu, Zahid Yaqoob, Xin Heng, Lap Man Lee, Xiquan Cui, Changhuei Yang, "Observing dynamics of transparent samples by harmonically matched grating-based full-field quadrature phase interferometer", Proc. SPIE 6861, Three-Dimensional and Multidimensional Microscopy: Image Acquisition and Processing XV, 686102 (20 February 2008); doi: 10.1117/12.759210; https://doi.org/10.1117/12.759210
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:87877
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:16 Jul 2018 22:57
Last Modified:03 Oct 2019 20:00

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