Differentiation of phase objects by spatial filtering |
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Authors: | V Ram Mohan RS Sirohi |
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Institution: | Fine Technics Laboratory, Indian Institute of Technology, Madras 600 036, India |
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Abstract: | A filter function has been theoretically arrived at, which in a coherent optical system produces an irradiance image distribution that is quasi-linear to the first derivative of the phase of a purely phase varying object. The filter function is generated with the aid of a computer-controlled plotter and experimental results of phase differentiation are presented. |
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