Abstract
In temporal speckle-pattern interferometry deformation information
is extracted by a Fourier transform technique from the speckle pattern
that is recorded over a period of time as the object is deformed. A
limitation of the experimental arrangements reported to date is that
the direction of the deformation cannot be determined. We propose
removing this limitation by using the heterodyne principle. Some
experimental results that were obtained by use of a rotating
half-wave-plate frequency shifter are presented.
© 2000 Optical Society of America
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