Phase stepping in Lau interferometry


The implementation of phase shifting interferometry to analyze the Lau interferometric fringe patterns is proposed. The fundamentals of this application are theoretically discussed and the basis of the phase map interpretation is outlined. The three steps algorithm is used to depict the phase maps of lens-like test objects and an application for measuring focal lengths of lenses is reported. Experimental results are presented. q1999 Elsevier Science B.V. All rights reserved.


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Phase stepping in Lau interferometry. Optics Communications, Volume 164, Issues 4–6, 15 June 1999, Pages 247-255 Luciano Angel, Myrian Tebaldi, Rodrigo Henao