Dynamic holographic interferometry by photorefractive crystals for quantitative deformation measurements

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32 Scopus citations

Abstract

Aholographic interferometer that uses two-wave mixing in a photorefractive (Bi12SiO20) crystal under an applied ac field is described. The interferometer uses a repetitive sequence of separate record and readout times to obtain quasi real-time holographic interferograms of vibrating objects. It is shown that a good signal-to-noise ratio of the interferometer is obtained by turning off the object illumination and the applied ac field during readout of the hologram. The good signal-to-noise ratio of the resulting holographic interferograms enables phase measurement, which allows for quantitative deformation analysis.

Original languageEnglish (US)
Pages (from-to)787-794
Number of pages8
JournalApplied optics
Volume35
Issue number5
DOIs
StatePublished - Feb 10 1996

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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