An ESPI apparatus with multichannel data acquisition |
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| Authors: | P. Ottonello C. Pontiggia L. Rossi |
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| Affiliation: | Istituto Scienze Fisiche, Università di Genova, Genova, Italy;Istituto Nazionale Fisica Nucleare, Sezione di Genova, Genova, Italy |
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| Abstract: | An ESPI (Electronic Speckle Pattern Interferometry) apparatus employing a linear photodiodes array for multichannel data acquisition is described. The technique is applied for measurements of normal displacements of surfaces when time and space resolutions are required. |
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