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Harmonically-related diffraction gratings-based interferometer for quadrature phase measurements

Yaqoob, Zahid and Wu, Jigang and Cui, Xiquan and Heng, Xin and Yang, Changhuei (2006) Harmonically-related diffraction gratings-based interferometer for quadrature phase measurements. Optics Express, 14 (18). pp. 8127-8137. ISSN 1094-4087.

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We demonstrate the use of shallow diffraction gratings for quadrature phase interferometry. A single shallow diffraction grating-based Michelson interferometer yields only trivial (0° or 180°) phase shift between different output ports. In comparison, a combination of two parallel shallow diffraction gratings can be useful to achieve desired phase shifts (e.g., 90° for quadrature phase interferometry). We show that the phase at different output ports of a grating-pair based interferometer can be adjusted by shearing the two gratings with respect to each other. Two harmonically-related diffraction gratings are used to demonstrate phase shift control at the output ports of a modified Michelson interferometer. Our experimental data is in good agreement with theory.

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Yang, Changhuei0000-0001-8791-0354
Additional Information:© 2006 Optical Society of America Original Manuscript: June 28, 2006. Manuscript Accepted: August 17, 2006. Revised Manuscript: August 15, 2006. Published: September 1, 2006 The authors acknowledge helpful discussions with Demetri Psaltis and Marinko Sarunic. This work is supported by NSF career award BES-0547657.
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Subject Keywords:Holographic interferometry; Interference microscopy; Medical and biological imaging
Issue or Number:18
Record Number:CaltechAUTHORS:YAQoe06
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Official Citation:Z. Yaqoob, J. Wu, X. Cui, X. Heng, and C. Yang, "Harmonically-related diffraction gratings-based interferometer for quadrature phase measurements," Opt. Express 14, 8127-8137 (2006)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:4750
Deposited By: Archive Administrator
Deposited On:05 Sep 2006
Last Modified:09 Mar 2020 13:19

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