Article (Scientific journals)
Accurate π/2-phase shifting setup for a stabilized interference pattern of light fringes
de Oliveira, Ivan; Borges Bertasso, Flavio; Georges, Marc et al.
2019In Optik - International Journal for Light and Electron Optics, 178, p. 879-883
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Keywords :
Phase-shifting; Metrology; Interferometry
Abstract :
[en] We report on a technique for accurately π/2-phase shifting a stabilized interference pattern of light fringes used for building up a map of phase for 2D deformation measurement. This technique is based on the use of low amplitude phase modulation on the setup in order to generate first and second harmonics temporal terms in the pattern of light to operate an actively stabilized setup. Particular features of this stabilization setup allow one to use them for accurate π/2-phase shifting with the practical advantage of operating on an already stabilized pattern of fringes.
Research center :
STAR - Space sciences, Technologies and Astrophysics Research - ULiège
Disciplines :
Physics
Author, co-author :
de Oliveira, Ivan;  Universidade Estadual de Campinas > GOMNI
Borges Bertasso, Flavio;  Universidade Estadual de Campinas > GOMNI
Georges, Marc ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Frejlich, Jaime;  Universidade Estadual de Campinas > Instituto de Fisica Gleb Wataghin
Language :
English
Title :
Accurate π/2-phase shifting setup for a stabilized interference pattern of light fringes
Publication date :
February 2019
Journal title :
Optik - International Journal for Light and Electron Optics
ISSN :
0030-4026
Publisher :
Elsevier, Netherlands
Volume :
178
Pages :
879-883
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
Photorefractive holographic interferometry (CAPES-WBI)
Available on ORBi :
since 05 December 2018

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