An Aperture-Dependent Phase Deviation In Holographic Interferometry

J. de Jong

doi:10.1117/12.943690

27 March 1985 An Aperture-Dependent Phase Deviation In Holographic Interferometry

J. de Jong

Proceedings Volume 0492, 1984 European Conf on Optics, Optical Systems, and Applications; (1985) https://doi.org/10.1117/12.943690
Event: 1984 European Conference on Optics, Optical Systems and Applications, 1984, Amsterdam, Netherlands

Abstract

In holographic interferometry, the phase difference governing the interference pattern appears to deviate slightly from the value that follows from the usual formula. This phase deviation 6 is a.o. due to the nonvanishing detector aperture. For the case that the detector is focussed on the object surface, we calculate this for double exposure holography. In many practical situations δ appears to be maximized by a function proportional to the longitudinal displacement and to the square of the angular detector aperture, while δ does not exceed the value of π usually. Related to holographical systems which can measure the phase differences very accurately, formulas are derived for δ in the paraxial as well as the non-paraxial situation. Since in the paraxial situation δ can be approximated accurately by a simple function of only two variables, the emphasis is laid on the question how accurately (S can be approximated by the paraxial formulas in the non-paraxial situation.

Citation Download Citation

J. de Jong "An Aperture-Dependent Phase Deviation In Holographic Interferometry", Proc. SPIE 0492, 1984 European Conf on Optics, Optical Systems, and Applications, (27 March 1985); https://doi.org/10.1117/12.943690

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