Proceedings PaperDifference holographic interferometry: an overview
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The difference holographic interferometry (DHI) may be used for direct optical compa- rision of two nominally identical objects (master and test) and to display the re- sults of the comparision in form of interference pattern related to the difference in deformation, shape or refractive index change of the two objects. After a general discussion of concepts the main techniques of the DHI will be intro- duced, and typical applications presented.