The one-step phase-shifting technique for wave-front interferometry

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Hitherto, phase-shifting schemes in wave-front interferometry required a minimum of two precise phase steps in order to derive the phase. This paper outlines and demonstrates a novel technique entailing one precise phase step. Numerical analyses of phase-drift errors indicate that the proposed technique compares favourably with performances of the three- and four-bucket algorithms currently in use. Furthermore, it minimizes the period of computation by necessitating the use of three processing frames.

Original languageEnglish
Pages (from-to)2129-2138
Number of pages10
JournalJournal of Modern Optics
Issue number10
Publication statusPublished - 1 Jan 1996
Externally publishedYes

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