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1 October 1991 Shadow method of scale with a-posteriori increase of measurements sensitivity
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Abstract
The method of measurement of a derivative of a function of phase distribution in the object plane is dealt with in the paper. The method consists of recording in the phase object image plane of a one-dimensional grating defocused image and in subsequent coherent optical processing. As a result of grating image repeated coherent re-recording with filtering of lateral orders of diffraction, increase of measurement sensitivity is obtained. Experimental results, characterizing 16-times sensitivity increase of measurements, are shown.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Nikolay M. Spornik and M. Yu. Serenko "Shadow method of scale with a-posteriori increase of measurements sensitivity", Proc. SPIE 1508, Industrial Applications of Holographic and Speckle Measuring Techniques, (1 October 1991); https://doi.org/10.1117/12.47101
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