Title :
The role of caustics in formation of network of amplitude zeroes in speckle field
Author :
Angelsky, O.V. ; Maksimyak, P.P. ; Maksimyak, A.P. ; Ushenko, Yu.A.
Author_Institution :
Dept. of Correlation Opt., Chernivtsi Univ., Ukraine
Abstract :
The topology of a partially developed speckle field is studied using interference techniques. It has been shown that formation of interference forklets in the field gives evidence of changes in the field topology, being the diagnostic sign of transition from a planar Fraunhofer diffraction pattern to a three-dimensional pattern of a diffraction catastrophe.
Keywords :
Fraunhofer diffraction; light interferometry; speckle; surface roughness; amplitude zeroes; caustics; diffraction catastrophe; field topology; interference forklets; interference techniques; planar Fraunhofer diffraction pattern; speckle field; surface roughness; three-dimensional pattern; Adaptive optics; Intelligent networks; Interference; Optical scattering; Optical surface waves; Optical vortices; Rough surfaces; Speckle; Surface roughness; Surface waves;
Conference_Titel :
Laser and Fiber-Optical Networks Modeling, 2004. Proceedings of LFNM 2004. 6th International Conference on
Print_ISBN :
0-7803-8429-6
DOI :
10.1109/LFNM.2004.1382470
