Journal ArticleDOI
Experimental Study of the Laser Speckle Phase in the Image Field
Reads0
Chats0
TLDR
In this article, the statistical properties of the laser speckle phase in the image field were experimentally studied under the condition that the speckles field obeys Gaussian statistics.Abstract:
Statistical properties of the laser speckle phase in the image field were experimentally studied under the condition that the speckle field obeys Gaussian statistics. The speckle phase was measured in relation to the phase variations of light passing through a diffuse object and the defocusing of the imaging system. It is found that the phase variations of speckles at the image plane are smaller than those of light passing through the object. The anomaly of the speckle phase in the neighbourhood of the Gauss image plane is also found and interpreted in relation to the dip phenomenon of the speckle contrast.read more
Citations
More filters
Journal ArticleDOI
Statistical properties of the speckle phase in the diffraction region
TL;DR: In this paper, the statistical properties of the speckle phase in the diffraction region were theoretically and experimentally investigated, and the statistical parameters describing the equiprobability density ellipse, by which the specke field is characterized, were derived for the general case.
Journal ArticleDOI
Statistical properties of the phase difference between two interfering speckle fields in speckle interferometry
TL;DR: In this article, the statistical properties of the phase difference between the two interfering partially correlated and partially developed speckle fields were studied experimentally as a function of the intensity correlation coefficient.
Journal ArticleDOI
Second-order conditional statistics of phase for partially developed speckle fields in the far field
TL;DR: In this paper, a conditional equiprobability-density ellipse is obtained to study theoretically the second-order conditional statistics of phase for partially developed Gaussian speckle fields in the far-field diffraction region in the case for which the rough surface is illuminated by a plane Gaussian laser beam.
Journal ArticleDOI
Digital phase-shifting interferometry applied to partially developed speckle fields
TL;DR: Partially developed speckle fields produced by a weak scatterer are studied with digital phase-shifting interferometry techniques in this article, where data acquisition and processing are described, and laboratory results are presented
Journal ArticleDOI
Moments of the intensity of a non-circular Gaussian laser speckle pattern in the diffraction field
TL;DR: In this paper, general expressions for the moments of the intensity of a non-circular Gaussian speckle field are derived and their dependence on the path and beam parameters is discussed.
References
More filters
Journal Article
High resolution hologram interferometry by electronic phase measurement
TL;DR: In this paper, a dual frequency method interpolates the fringe pattern of any kind of hologram interfermetry down to better than 1 100 of a fringe, independent of intensity variations.
Journal ArticleDOI
High resolution hologram interferometry by electronic phase measurement
TL;DR: In this article, a dual frequency method interpolates the fringe pattern of any kind of hologram interfermetry down to better than 1 100 of a fringe, independent of intensity variations.
Journal ArticleDOI
Theory of speckle dependence on surface roughness
TL;DR: In this paper, the theory of speckle in partially coherent, monochromatic light is extended to cover the entire range of object roughness, and general relations are derived for the spatial correlation and the spatial Wiener spectrum.