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 http://resolver.caltech.edu/CaltechAUTHORS:YAQoe06
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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.
|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.|
|Subject Keywords:||Holographic interferometry; Interference microscopy; Medical and biological imaging|
|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) http://www.opticsinfobase.org/abstract.cfm?URI=oe-14-18-8127|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Archive Administrator|
|Deposited On:||05 Sep 2006|
|Last Modified:||26 Dec 2012 09:01|
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