Measurement of Spatial Coherence of Light Propagating in a Turbulent Atmosphere

Autor:	Peter Barcík, Hudcova, Lucie
Předmět:	coherence radius spatial coherence Atmospheric turbulence Physics::Optics Young's experiment lcsh:Electrical engineering. Electronics. Nuclear engineering fringe pattern lcsh:TK1-9971
Zdroj:	ResearcherID Radioengineering, Vol 22, Iss 1, Pp 341-345 (2013) Radioengineering. 2013, vol. 22, č. 1, s. 341-345. ISSN 1210-2512
Popis:	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 optical intensity and loss of spatial coherence that are caused by atmospheric turbulence. This paper presents experimental measurements of spatial coherence of a laser beam. The experimental setup is based on Young's double pinhole experiment. 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.
Databáze:	OpenAIRE
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