16 September 2005 Statistics of the near-field speckle pattern in transmission through random media
Author Affiliations +
Proceedings Volume 5924, Complex Mediums VI: Light and Complexity; 59240T (2005); doi: 10.1117/12.616160
Event: Optics and Photonics 2005, 2005, San Diego, California, United States
In this paper, we explore the specific nature of wave propagation in multiple scattering media and examine how this is revealed in various aspects of the speckle pattern measured at the output surface of an ensemble of disordered media. We present near-field measurements of the speckle pattern transmitted through random samples in a quasi-one dimensional geometry. The microwave field--amplitude and phase--is measured as a function of frequency along perpendicular transverse polarizations on a close grid of points on the output surface of samples composed of randomly positioned dielectric spheres. The field spectrum is Fourier transformed to access the temporal evolution of the speckle pattern. The field and intensity correlation functions versus displacement and frequency shift are measured and reveal non-Gaussian behavior, namely long range correlation. The key distributions and correlation functions of the delay time are also measured and compared to calculations, to show the interplay between the delay time and the intensity in the speckle pattern. The widest fluctuations of the phase derivative with frequency are found at low intensity values near a phase singularity in the transmitted speckle pattern. The position of these phase singularities at which the intensity vanishes is reconstructed for the entire speckle pattern.
© (2005) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Patrick Sebbah, Bing Hu, Andrey A. Chabanov, Azriel Z. Genack, "Statistics of the near-field speckle pattern in transmission through random media", Proc. SPIE 5924, Complex Mediums VI: Light and Complexity, 59240T (16 September 2005); doi: 10.1117/12.616160; https://doi.org/10.1117/12.616160

Correlation function

Speckle pattern


Near field

Optical spheres

Dielectric polarization

Microwave radiation


Speckle signatures of articulating humans
Proceedings of SPIE (May 07 2012)
Speckle In Optical Fibers
Proceedings of SPIE (December 03 1980)
Speckle and radiometry
Proceedings of SPIE (December 01 1990)

Back to Top