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Mohammad Abolhassani

Mohammad Abolhassani

Academic rank: Associate Professor
ORCID: https://orcid.org/0000-0001-6112-0709
Education: PhD.
ScopusId: 16174353100
Faculty: Science
Address: Arak University
Phone:

Research

Title
Sampling moiré method A: more exact solution
Type
JournalPaper
Keywords
Sampling moiré method Phase shift calculation
Year
2023
Journal Results in Optics
DOI
Researchers Mohammad Abolhassani

Abstract

An important task in the sampling moiré method is phase measurement of a grating image by using the phase of the moiré fringe from a single-shot image. In the method, by thinning out the image, one gets 𝑁 phase-shifted moiré fringes, where 𝑁 is called the thinning-out index. In the conventional treatment, they are considered as phase-shifted patterns with shifts equal to multiples of 2𝜋∕𝑁. This is not an exact supposition. It is shown in this work that the exact magnitude of the phase shift is 2𝜋∕𝑇 , where 𝑇 is the period of the grating image. According to this fact, the formalism of the technique is modified. The simulation results verify the correctness of the theoretical results.