A new fringe carrier method for the determination of displacement derivatives in hologram interferometry
Review articleOpen access
Abstract:

AbstractHolographic carrier fringes are produced by rotation of the object beam prior to the second exposure when the object is deformed. It is shown that the local pitch of the carrier is a linear function of displacement derivatives. The local pitch may be directly measured with a microscope or a digitized TV system. The theoretical foundation as well as an experimental demonstration are given in this paper.

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