Format

Send to

Choose Destination
See comment in PubMed Commons below
Appl Opt. 1995 Apr 10;34(11):1923-8. doi: 10.1364/AO.34.001923.

Holographic interferometry using two-wavelength holography for the measurement of large deformations.

Abstract

Visible holographic interferometry is generally too sensitive for the measurement of large deformations. We present a holographic method that permits an increase in the range of measurable deformations. It requires the use of two different wavelengths, λ(1) and λ(2), and two holograms in series. We develop the theoretical basis of a method that permits the obtention of an interferogram as if a longer equivalent wavelength, λ(eq) = λ(1)λ(2)/|λ(1) -λ(2)|, were used. The method is experimentally tested by use of a setup that can be easily converted into a classical single-wavelength holographic interferometer, permitting comparison of the interferograms of the same deformation produced with both methods. Significant results are presented.

PMID:
21037738
Free full text
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for ORBi (University of Liege)
    Loading ...
    Support Center