Using a programmable interferometer for digital phase-shifting speckle interferometry |
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| Authors: | V. Greco L. Hoffer G. Molesini M. Trivi |
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| Affiliation: | Istituto Nazionale di Ottica, Largo E. Fermi 6, I-Firenze 50125, Italy |
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| Abstract: | The use of a programmable phase-shifting interferometer to detect the deformation of scattering surfaces is described. The interferometer is a commercial instrument in use for optical testing applications; the sample surface is imaged as a speckle pattern. The measuring procedure and the program are outlined, and an experimental demonstration on an aluminium plate under load is given. |
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