Title: Full-field measurement of the phase retardation for birefringent elements by using common path heterodyne interferometry
Authors: Chen, Yen-Liang
Su, Der-Chin
光電工程學系
Department of Photonics
Keywords: Electro-optic modulation;Phase retardation;Heterodyne interferometry;Common-path interferometry
Issue Date: 1-Mar-2009
Abstract: A collimated heterodyne light passes through the tested material and an analyzer, full-field interference signals are taken by a fast CMOS camera. The series of interference intensities recorded at any pixel are the sampling points of a sinusoidal signal. From those points, the associated argument of that pixel can be derived by a least-square sine fitting algorithm on IEEE 1241 Standards. Subtracting the average argument of the reference signal, the phase retardation of that pixel can be obtained. The phase retardations of other pixels can be obtained similarly. Its validity is demonstrated. (C) 2008 Elsevier Ltd. All rights reserved
URI: http://dx.doi.org/10.1016/j.optlaseng.2008.05.012
http://hdl.handle.net/11536/7531
ISSN: 0143-8166
DOI: 10.1016/j.optlaseng.2008.05.012
Journal: OPTICS AND LASERS IN ENGINEERING
Volume: 47
Issue: 3-4
Begin Page: 484
End Page: 487
Appears in Collections:Articles


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