Share Email Print
cover

Proceedings Paper

Correlation method of surface roughness testing using a spatially modulated laser beam
Author(s): Vladimir P. Ryabukho; Yuri A. Avetisyan; Anastasiya B. Sumanova; Dmitry A. Zimnyakov
Format Member Price Non-Member Price
PDF $17.00 $21.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

A new testing method of the surface roughness is discussed. The method is based on the usage of the probing laser beam with spatial modulation in the form of a regular interference pattern, and of the contrast change effect of the patter in the scattered light depending on the tested surface roughness parameters. The method theory based on the interference of the identical speckle modulated waves formed in the diffraction field is presented. This method permits us to determine phase inhomogeneities standard deviation, correlation length and object phase inhomogeneities form of the correlation coefficient. Experimental results of the phase inhomogeneities of television screens and phase specklegrams testing are presented.

Paper Details

Date Published: 12 December 1994
PDF: 10 pages
Proc. SPIE 2340, Interferometry '94: New Techniques and Analysis in Optical Measurements, (12 December 1994); doi: 10.1117/12.195954
Show Author Affiliations
Vladimir P. Ryabukho, Saratov State Univ. and Mechanical Engineering Institute (Russia)
Yuri A. Avetisyan, Saratov State Univ. and Mechanical Engineering Institute (Russia)
Anastasiya B. Sumanova, Mechanical Engineering Institute (Russia)
Dmitry A. Zimnyakov, Saratov State Univ. and Mechanical Engineering Institute (Russia)


Published in SPIE Proceedings Vol. 2340:
Interferometry '94: New Techniques and Analysis in Optical Measurements
Malgorzata Kujawinska; Krzysztof Patorski, Editor(s)

© SPIE. Terms of Use
Back to Top