Open AccessStatistical properties of a Laguerre-Gaussian Schell-model beam in turbulent atmosphere
Author(s) -
Rong Chen,
Lin Liu,
Shiqun Zhu,
Guannan Wu,
Fei Wang,
Yangjian Cai
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.001871
Subject(s) - physics , optics , beam (structure) , turbulence , m squared , atmosphere (unit) , coherence (philosophical gambling strategy) , laguerre polynomials , atmospheric optics , laser beam quality , gaussian , computational physics , meteorology , quantum mechanics , laser beams , laser
Laguerre-Gaussian Schell-model (LGSM) beam was proposed in theory [Opt. Lett.38, 91 (2013 Opt. Lett.38, 1814 (2013)] just recently. In this paper, we study the propagation of a LGSM beam in turbulent atmosphere. Analytical expressions for the cross-spectral density and the second-order moments of the Wigner distribution function of a LGSM beam in turbulent atmosphere are derived. The statistical properties, such as the degree of coherence and the propagation factor, of a LGSM beam in turbulent atmosphere are studied in detail. It is found that a LGSM beam with larger mode order n is less affected by turbulence than a LGSM beam with smaller mode order n or a GSM beam under certain condition, which will be useful in free-space optical communications.