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Keywords:

  • Holography;
  • Interferometry;
  • Modal Analysis

Abstract

A simple modification is described to allow capture of digital holograms with two separated illuminations of a vibrating object using a standard digital holography system. The object is a small wine glass vibrating in a two-diameter mode and a three-diameter mode. Image data is resolved into axial and transverse components, and horizontal data scans are resolved into magnitude and angular direction.