M2-factor of coherent and partially coherent dark hollow beams propagating in turbulent atmosphere

Yangsheng Yuan, Yangjian Cai, Jun Qu, Halil T. Eyyuboǧlu, Yahya Baykal, Olga Korotkova

Research output: Contribution to journalArticle

121 Citations (Scopus)

Abstract

Analytical formula is derived for the M2-factor of coherent and partially coherent dark hollow beams (DHB) in turbulent atmosphere based on the extended Huygens-Fresnel integral and the second-order moments of the Wigner distribution function. Our numerical results show that the M2-factor of a DHB in turbulent atmosphere increases on propagation, which is much different from its invariant properties in free-space, and is mainly determined by the parameters of the beam and the atmosphere. The relative M 2-factor of a DHB increases slower than that of Gaussian and flat-topped beams on propagation, which means a DHB is less affected by the atmospheric turbulence than Gaussian and flat-topped beams. Furthermore, the relative M2-factor of a DHB with lower coherence, longer wavelength and larger dark size is less affected by the atmospheric turbulence. Our results will be useful in long-distance free-space optical communications.

Original languageEnglish (US)
Pages (from-to)17344-17356
Number of pages13
JournalOptics Express
Volume17
Issue number20
DOIs
StatePublished - Sep 28 2009

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hollow
atmospheres
atmospheric turbulence
Fresnel integrals
free-space optical communication
propagation
distribution functions
moments
wavelengths

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

M2-factor of coherent and partially coherent dark hollow beams propagating in turbulent atmosphere. / Yuan, Yangsheng; Cai, Yangjian; Qu, Jun; Eyyuboǧlu, Halil T.; Baykal, Yahya; Korotkova, Olga.

In: Optics Express, Vol. 17, No. 20, 28.09.2009, p. 17344-17356.

Research output: Contribution to journalArticle

Yuan, Yangsheng ; Cai, Yangjian ; Qu, Jun ; Eyyuboǧlu, Halil T. ; Baykal, Yahya ; Korotkova, Olga. / M2-factor of coherent and partially coherent dark hollow beams propagating in turbulent atmosphere. In: Optics Express. 2009 ; Vol. 17, No. 20. pp. 17344-17356.
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