Simultaneous phase shifting interferometry based in a Mach Zehnder interferometer for measurement of transparent samples

David-Ignacio Serrano-García; Noel-Ivan Toto-Arellano; Amalia Martínez-García; Juan Antonio Rayas-Álvarez; Gustavo Rodríguez-Zurita

doi:10.1117/12.901952

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21 October 2011 Simultaneous phase shifting interferometry based in a Mach Zehnder interferometer for measurement of transparent samples

David-Ignacio Serrano-García, Noel-Ivan Toto-Arellano, Amalia Martínez-García, Juan Antonio Rayas-Álvarez, Gustavo Rodríguez-Zurita

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Proceedings Volume 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World; 80110M (2011) https://doi.org/10.1117/12.901952
Event: International Commission for Optics (ICO 22), 2011, Puebla, Mexico

Abstract

A Mach Zehnder (MZ) interferometer was implemented to analyze a phase object using polarization phase-shifting interferometry. The Mach Zehnder interferometer produces two beams with circular polarization of opposite rotations one respect to the other. The system is coupled to a 4-f system with phase grating in the Fourier plane, interference of the fields associated with replicated beams centered on the diffraction orders is achieved by a proper choice of the beams spacing with respect to the gratings period. The optical configuration allows obtaining n-interferograms in one shot. The configuration presented does not require micro-polarizer arrays or additional software to eliminate noise caused by vibration, as the system is stable itself and uses conventional polarizing filters. Considering the object under study a thin phase object, experimental results are presented.

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David-Ignacio Serrano-García, Noel-Ivan Toto-Arellano, Amalia Martínez-García, Juan Antonio Rayas-Álvarez, and Gustavo Rodríguez-Zurita "Simultaneous phase shifting interferometry based in a Mach Zehnder interferometer for measurement of transparent samples", Proc. SPIE 8011, 22nd Congress of the International Commission for Optics: Light for the Development of the World, 80110M (21 October 2011); https://doi.org/10.1117/12.901952

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