Abstract

We present a study of the variations of a speckle pattern passing through a grating that can be displaced. This study is described theoretically by a simple model based on the scalar diffraction theory in the Fresnel zone. The intensity correlation of the modified speckle as a function of the grating displacement is obtained and compared with experimental results. The possibilities of metrological applications in optical encoders are suggested.

© 2006 Optical Society of America

Zero reference signal for displacement measuring systems by use of speckle

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Theoretical investigations on dual-beam illumination electronic speckle pattern interferometry

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Optical vortex metrology for nanometric speckle displacement measurement

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Grating speckle method for in-plane displacement measurement

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