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Laser speckle and surface roughness

✍ Scribed by Welford, W. T.

Book ID
115452099
Publisher
Taylor and Francis Group
Year
1980
Tongue
English
Weight
770 KB
Volume
21
Category
Article
ISSN
0010-7514

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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-ΓΏeld plane. The technique is simple and requires minimum optica