Speckle size of light scattered from slightly rough cylindrical surfaces.
This research is an extension of the optical method of quality control presented in a previous paper [Appl. Opt. 39, 5811 (2000)] to the case of slightly rough cylindrical surfaces. Applying the Kirchhoff scalar diffraction theory yields an analytical expression of the autocorrelation function of the intensity scattered from slightly rough cylindrical surfaces. This function, which is related to speckle size and shape, is shown to depend on the surface correlation length, unlike for plane surfaces for which the speckle depends on the illuminated area only. The theoretical expression is compared with that for the speckle produced by the light scattered from a cylindrical bearing and from various high-quality wires, showing that the method allows the correlation lengths of high-quality cylindrical surfaces to be determined.
Berlasso
Ricardo G
RG
Laboratorio de Aplicaciones Opticas, Departamento de Física, Facultad de Ingeniería de la Universidad de Buenos Aires, Argentina.
Quintián
Fernando Perez
FP
Rebollo
María A
MA
Gaggioli
Néstor G
NG
Sánchez
Brea Luis Miguel
BL
Bernabeu
Martínez Eusebio
ME