Three-dimensional coherence of light speckles: Theory

被引：65

作者：

Gatti, A. ^{[1
]}

Magatti, D. ^{[1
]}

Ferri, F. ^{[1
]}

机构：

[1] Univ Insubria, CNR INFM CNISM, Dipartimento Matemat & Fis, I-22100 Como, Italy

来源：

PHYSICAL REVIEW A | 2008年 / 78卷 / 06期

关键词：

Fraunhofer diffraction; Fresnel diffraction; light coherence; speckle;

D O I：

10.1103/PhysRevA.78.063806

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We provide a detailed analysis of the three-dimensional spatial coherence properties of light speckles, based on very general assumptions. We show that, while in the deep Fresnel region close to the source the longitudinal coherence of speckles is ruled by the laws of ordinary diffraction, on approach to the Fraunhofer zone the longitudinal coherence length tends to become infinite. We offer both a quantitative and a qualitative description of the emergence of these different behaviors.

引用

页数：11

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