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Advances in Condensed Matter Physics
Volume 2017 (2017), Article ID 9625206, 8 pages
https://doi.org/10.1155/2017/9625206
Research Article

Self-Reconstruction Property of a Special Speckle Pattern after Obstructing by an Opaque Obstruction

School of Physics, Northwest University, Xi’an 710069, China

Correspondence should be addressed to Gaofeng Wu

Received 29 June 2017; Accepted 21 August 2017; Published 26 September 2017

Academic Editor: Shuqing Chen

Copyright © 2017 Yanyu Chen et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Numerical simulation of random optical field with special autocorrelation is performed. It can be seen that the speckle pattern with special autocorrelation is different from the general speckle pattern whose autocorrelation is a Gaussian function. Furthermore, we study the propagation property of the special speckle in free space after blocking by an opaque obstruction and find the self-healing effect of speckle. In particular, we investigate the influence of size and shape of obstruction and the coherence of speckle on the speckle’s reconstruction process. We find that it is affected by the size of obstruction and the coherence of the speckle but is almost not affected by the shape of obstruction. Our results can be applied to the imaging, optical communication, and so on.