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A Simple Electronic Speckle Pattern Interferometry System Using Holographic Optical Elements, Guntaka Tulasi Sridhar Reddy
A Simple Electronic Speckle Pattern Interferometry System Using Holographic Optical Elements, Guntaka Tulasi Sridhar Reddy
Doctoral
The aim of the work reported in this thesis is to develop a simple electronic speckle pattern interferometry (ESPI) system by combining holographic optical element technology with speckly interferometry. A holographic optical element is used in an ESPI system instead of the lenses, mirrors, beam splitters and beam combiners which are usually required in a conventional system. The final ESPI system consists only of a single holographic element, laser and CCD camera. Many currently available systems are complicated and consist of expensive optics that can be difficult to align. Even the simplest require several conventional optical elements to manipulate the …