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Real-time measurement of surface roughness by correlation of speckle patterns

✍ Scribed by Léger, D.; Perrin, J. C.


Book ID
115384106
Publisher
Optical Society of America
Year
1976
Weight
901 KB
Volume
66
Category
Article
ISSN
0030-3941

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Whole field surface roughness measuremen
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This paper describes a speckle correlation technique for the determination of surface roughness, ranging from 1.6 to 50 m. Instead of moving the laser beam, the specimen is rotated to achieve angular speckle correlation (ASC) in the far-ÿeld plane. The technique is simple and requires minimum optica