Role of Caustics in the Formation of Networks of Amplitude Zeros for Partially Developed Speckle Fields
Applied Optics, Vol. 43, Issue 31, pp. 5744-5753 (2004)
http://dx.doi.org/10.1364/AO.43.005744
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Abstract
The topology of a partially developed speckle field was studied by use of interference techniques through computer simulation. Amplitude and phase structures in the vicinity of caustics for a coherent radiation field scattered at a surface with large inhomogeneities were investigated. It was confirmed that the caustics are indispensible components of the procedure for the formation of networks of amplitude zeros for a coherent field scattered by a rough surface with large inhomogeneities. It is shown that the formation of interference forklets in the field gives evidence of changes in the field’s topology, as these forklets are a diagnostic sign of transition from a caustic to a three-dimensional pattern of a diffraction catastrophe.
© 2004 Optical Society of America
OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.4630) Instrumentation, measurement, and metrology : Optical inspection
(170.6960) Medical optics and biotechnology : Tomography
(180.1790) Microscopy : Confocal microscopy
(240.5770) Optics at surfaces : Roughness
(290.0290) Scattering : Scattering
Citation
Oleg V. Angelsky, Peter P. Maksimyak, Alexander P. Maksimyak, Steen G. Hanson, and Yuriy A. Ushenko, "Role of Caustics in the Formation of Networks of Amplitude Zeros for Partially Developed Speckle Fields," Appl. Opt. 43, 5744-5753 (2004)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-43-31-5744
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