Relative displacement determination of surfaces of two objects by means of speckle-field dynamic interference in the image plane

Alexander Petrovich Vladimirov; P. S. Eremin

doi:10.1117/12.518490

23 September 2003 Relative displacement determination of surfaces of two objects by means of speckle-field dynamic interference in the image plane

Alexander Petrovich Vladimirov, P. S. Eremin

Author Affiliations +

Proceedings Volume 5067, Saratov Fall Meeting 2002: Laser Physics and Photonics, Spectroscopy, and Molecular Modeling III; Coherent Optics of Ordered and Random Media III; (2003) https://doi.org/10.1117/12.518490
Event: Saratov Fall Meeting 2002 Laser Physics and Photonics, Spectroscopy, and Molecular Modeling III; Coherent Optics of Ordered and Random Media III, 2002, Saratov, Russian Federation

Abstract

The interference of two speckle-modulated waves reflected from two three-dimensional deformable objects and passed through the image-forming lens system is theoretically considered. The equation connecting a vector of relative displacement of surfaces of two objects and the change of interference order in the region of their images overlapping is obtained. In the case of the coincidence of the objects illumination and observation, the equation precisely concurs with the similar equation in holographic interferometry. For verification of the validity of this theory, the experiment, in which deformation of the membrane was studied by a new method and by a method of real time holographic interferometry, was carried out. It is demonstrated the good correlation of results obtained by both methods.

Citation Download Citation

Alexander Petrovich Vladimirov and P. S. Eremin "Relative displacement determination of surfaces of two objects by means of speckle-field dynamic interference in the image plane", Proc. SPIE 5067, Saratov Fall Meeting 2002: Laser Physics and Photonics, Spectroscopy, and Molecular Modeling III; Coherent Optics of Ordered and Random Media III, (23 September 2003); https://doi.org/10.1117/12.518490

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