Measurement of Spatial Coherence of Light Propagating in a Turbulent Atmosphere
Measurement of Spatial Coherence of Light Propagating in a Turbulent Atmosphere
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DOI：
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发表时间：
2013-04
影响因子：
4.4
通讯作者：
P. Barcik;L. Hudcová
中科院分区：
文献类型：
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作者：
P. Barcik;L. Hudcová
在设计一条可靠的自由空间光通信链路时，需要考虑很多问题。其中包括，大气湍流引起的光束漂移、光强起伏和空间相干性损失。本文介绍了激光束空间相干性的实验测量。实验装置基于杨氏双针孔实验。本文给出了四种不同针孔间距的大气湍流条纹图。从这些条纹图案中，确定可见度并估计相干半径。
A lot of issues have to be taken into account when designing a reliable free space optical communication link. Among these are e.g.,beam wander, fluctuation of op- tical intensity and loss of spatial coherence that are caused by atmospheric turbulence. This paper presents experimen- tal measurements of spatial coherence of a laser beam. The experimental setup is based on Young's double pinhole ex- periment. Fringe patterns under atmospheric turbulence for four different pinhole separations are presented. From these fringe patterns, visibility is determined and the coherence radius is estimated.