Changes in the width of the coherence for partially coherent flat topped beams with a circular aperture in turbulent atmosphere

We study the change in the degree of coherence of partially coherent flat topped (PCFT) beam limited by a circular aperture propagating through atmospheric turbulence. It is shown analytically that the degree of coherence for mentioned beam reaches its maximum value after the beam propagates a speci...

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Bibliographic Details
Published in:Optik (Stuttgart) 2013-02, Vol.124 (4), p.327-330
Main Authors: Alavinejad, M., Hadilou, N., Ghafary, B.
Format: Article
Language:English
Subjects:
Atmospheric turbulence
Circular aperture
Degree of coherence
Effective width of the degree of coherence
Partially coherent flat topped beams
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Summary:We study the change in the degree of coherence of partially coherent flat topped (PCFT) beam limited by a circular aperture propagating through atmospheric turbulence. It is shown analytically that the degree of coherence for mentioned beam reaches its maximum value after the beam propagates a specific distance. In this paper we define the width of the coherence and it is shown analytically that the effective width of the degree of coherence also has a maximum value at the specific distance. This phenomenon is dependent on the used aperture radius size. The results are illustrated by numerical curves.
ISSN:0030-4026
1618-1336
DOI:10.1016/j.ijleo.2011.11.098