Transparent object analysis in a Mach-Zehnder interferometer using the multiplicative analogical moire phase-shifting method

Benito Vasquez Dorrio; Jose Carlos Lopez Vazquez; Angel F. Doval; Mariano Perez-Amor; J. L. Fernandez

doi:10.1117/12.357699

13 August 1999 Transparent object analysis in a Mach-Zehnder interferometer using the multiplicative analogical moire phase-shifting method

Benito Vasquez Dorrio, Jose Carlos Lopez Vazquez, Angel F. Doval, Mariano Perez-Amor, J. L. Fernandez

Author Affiliations +

Proceedings Volume 3744, Interferometry '99: Techniques and Technologies; (1999) https://doi.org/10.1117/12.357699
Event: International Conference on Optical Metrology, 1999, Pultusk Castle, Poland

Abstract

Transparent object Wave-Front Distortion has been measured in a Mach-Zehnder interferometer employing as evaluation tool the Multiplicative Analogical Moire Phase-Shifting Method. The measuring procedure is based on the direct superimposition of a transmission grating with a phase modulated high-frequency Mach-Zehnder spatial carrier. Latter, a set of phase-shifted fringe patterns, provided by low-pass filtering of the obtained multiplicative moire patterns, is combined in a Generic Phase-Shifting Algorithm (GPSA). The interesting information is achieved once the previous procedure is carried out with and without the transparent object located at the measuring area. The Wave- Front Distortion can be calculated by subtraction of these results provided by the GPSA or directly if a Differential PSA is employed. A comparison of the results obtained with both algorithms has been done.

Citation Download Citation

Benito Vasquez Dorrio, Jose Carlos Lopez Vazquez, Angel F. Doval, Mariano Perez-Amor, and J. L. Fernandez "Transparent object analysis in a Mach-Zehnder interferometer using the multiplicative analogical moire phase-shifting method", Proc. SPIE 3744, Interferometry '99: Techniques and Technologies, (13 August 1999); https://doi.org/10.1117/12.357699

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