Document Type
Article
Publication Date
9-1978
Department
Physics and Computer Science
Abstract
Surface roughness is studied experimentally by making use of the statistical properties of dichromatic speckle patterns. The rms intensity difference between two speckle patterns produced by two argon laser lines are analyzed in the far field as functions of the object surface roughness and the difference in the two wavenumbers of the illuminating light. By applying previously derived formulas, the rms surface roughness is obtained from rms intensity differences. Glass and metal rough surfaces are used. Other than the scattering arrangement, the experimental setup has a simple spectrometric system and an electronic analyzing circuit.
Recommended Citation
Fujii, Hitoshi and Lit, John W.Y., "Surface Roughness Measurement Using Dichromatic Speckle Pattern: An Experimental Study" (1978). Physics and Computer Science Faculty Publications. 21.
https://scholars.wlu.ca/phys_faculty/21
Comments
This paper was published in Applied Optics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-17-17-2690. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.