FLAKE STRUCTURE IN THE SPECKLE FIELD PRODUCED BY A FEW SCATTERERS
Liu De-li (刘德丽)a, Qi Dong-ping (亓东平)b, Teng Shu-yun (滕树云)a, Cheng Chuan-fu (程传福)a
a Department of Physics, Shandong Normal University, Jinan 250014, China; b Department of Mathematics and Physics, Shandong University of Technology, Jinan 250061, China
Abstract This paper reports a new phenomenon, namely, flake structure in the speckle field produced by a few scatterers. This structure appears in the off-axis region and its size is much larger than that of the normal speckles. The one-dimensional simulations show that as the roughness of the random surface sample increases or its lateral correlation length decreases, the flakes go farther away from the axis, their relative intensities increase, their sizes become bigger and the fluctuations in them decrease. A sub-scatterer model that we call isoclinic element is proposed to explain the formation and properties of flakes. Experimental evidence shows the existence of the flake structure.
Received: 27 October 1999
Accepted manuscript online:
(Structure of clean surfaces (and surface reconstruction))
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 69978012).
Cite this article:
Liu De-li (刘德丽), Qi Dong-ping (亓东平), Teng Shu-yun (滕树云), Cheng Chuan-fu (程传福) FLAKE STRUCTURE IN THE SPECKLE FIELD PRODUCED BY A FEW SCATTERERS 2000 Chinese Physics 9 353
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