Wavefront reconstruction by two-step generalized phase-shifting interferometry

• Published in: Optics communications Vol. 281; no. 23; pp. 5701 - 5705
• Main Authors: Meng, X.F., Cai, L.Z., Wang, Y.R., Yang, X.L., Xu, X.F., Dong, G.Y., Shen, X.X., Cheng, X.C.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.12.2008; Elsevier
• Subjects: Computers in experimental physics; Exact sciences and technology; Fundamental areas of phenomenology (including applications); Holographic interferometry; Holographic interferometry; other holographic techniques; Holography; Image processing; Imaging and optical processing; Instruments, apparatus, components and techniques common to several branches of physics and astronomy; Interferometers; Optical instruments, equipment and techniques; Optics; Phase retrieval; Phase shifting interferometry; Physics; Image processing; 42.87.Bg; Phase shifting interferometry; Phase retrieval; 07.05.Pj; 42.40.Kw; Holographic interferometry; 42.30.Rx; Phase shift; Interferogram; Phase-shifting interferometry; Image reconstruction; Algorithms; Wave front; Phase reconstruction
• ISSN: 0030-4018; 1873-0310
• DOI: 10.1016/j.optcom.2008.08.010

A wavefront reconstruction method by two-step generalized phase-shifting interferometry (GPSI) with blind phase shift extraction algorithm is verified by both the computer simulations and optical experiments. This method can retrieve complex object wave field by using two interferograms, the recorded object and reference wave intensities, and an unknown phase shift without additional processing. The simulations with irregular wavefronts have shown the effectiveness and high accuracy of this method for blind phase-shift extraction and wavefront reconstruction over a wide range of phase-shifts, while the optical experiments for both the direct and indirect objects have yielded satisfactory results with a higher resolution of reconstructed image than those reported recently.