Phase stitching and error correction in aperture synthesis for generalized phase-shifting interferometry

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Date

2013-07-01

Journal Title

Journal ISSN

Volume Title

Publisher

Optical Society of America

Abstract

An accurate aperture synthesis method in generalized phase-shifting interferometry is suggested to improve the quality of the reconstructed object wavefront by stitching both the phase and the real amplitude of the object wave on the recording plane. Since the phase distribution affects the reconstruction of the original object wavefront, phase stitching is also important in aperture synthesis. Double correlations are used to find the proper relative locations and correct the phase error of subwavefronts on the recording plane. By using phase correction, the phase distributions of subwavefronts are combined perfectly. Corresponding optical experimental results have verified the effectiveness of this method, which can stitch not only the real amplitudes but also the phases of the complex amplitudes of the object wave on the recording plane and improve the quality of the reconstructed object image. (C) 2013 Optical Society of America

Description

Keywords

Least-squares method, Wave-front, Digital holography, Algorithms, Extraction, Interferograms

Citation

Xianfeng Xu, Guangcan Lu, Guoxia Han, Fei Gao, Zhiyong Jiao, and Dailin Li, "Phase stitching and error correction in aperture synthesis for generalized phase-shifting interferometry," Appl. Opt. 52, 4864-4870 (2013); doi: 10.1364/ao.52.004864