Measurement of Microscopic Deformations Using Double-Exposure Holographic Interferometry and the Fourier Transform Method

Microscopic deformations on the surface of a circular diaphragm were measured using double exposure holographic interferometry and Fourier transform method (FTM). The three-dimensional surface deformations were successfully visualized by applying FTM to holographic interferogram analysis. The minimu...

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Bibliographic Details
Published inScience Diliman Vol. 10; no. 2; pp. 55 - 61
Main Authors Percival Almoro, Marlon Rosendo Daza
Format Journal Article
LanguageEnglish
Published University of the Philippines 01.12.1998
Subjects
double-exposure method
Fourier transform method
hologram
holographic interferometry
laser application
microscopic deformation measurement
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Summary:Microscopic deformations on the surface of a circular diaphragm were measured using double exposure holographic interferometry and Fourier transform method (FTM). The three-dimensional surface deformations were successfully visualized by applying FTM to holographic interferogram analysis. The minimum surface displacement measured was 0.317 µm. This was calibrated via the Michelson interferometry technique.
ISSN:0115-7809
2012-0818