Holographic Interferometry, Electronic Processing And Speckles

R. Dandliker; R. Thalmann

doi:10.1117/12.937023

10 July 1987 Holographic Interferometry, Electronic Processing And Speckles

R. Dandliker, R. Thalmann

Proceedings Volume 0701, 1986 European Conf on Optics, Optical Systems and Applications; (1987) https://doi.org/10.1117/12.937023
Event: 1986 International European Conference on Optics, Optical Systems, and Applications, 1986, Florence, Italy

Abstract

Automated evaluation and fringe interpolation of holographic interferograms is accomplished by electronic phase shifting techniques. However, the presence of speckles limits finally the accuracy and the spatial resolution for objects with diffusely scattering surfaces. Heterodyne holographic interferometry is well suited for scientific applications, where very high accuracy (1/1000 of a fringe) is needed. Quasi-heterodyne holographic interferometry with video processing is adequate for industrial applications, where high speed and medium accuracy (1/100 of a fringe) is required.

Citation Download Citation

R. Dandliker and R. Thalmann "Holographic Interferometry, Electronic Processing And Speckles", Proc. SPIE 0701, 1986 European Conf on Optics, Optical Systems and Applications, (10 July 1987); https://doi.org/10.1117/12.937023

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