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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 8 — Apr. 9, 2012
  • pp: 8417–8430

Propagation of partially coherent annular beams with decentered field in turbulence along a slant path

Lingyu Dou, Xiaoling Ji, and Peiyun Li  »View Author Affiliations


Optics Express, Vol. 20, Issue 8, pp. 8417-8430 (2012)
http://dx.doi.org/10.1364/OE.20.008417


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Abstract

The model of partially coherent annular beams with linear non-uniformity field profile in the x direction is set up. The analytic expressions for the average intensity and the centre of gravity of partially coherent annular beams with decentered field propagating through atmospheric turbulence along a slant path are derived. The propagation equation governing the position of the intensity maximum is also given. It is found that the beam non-uniformity is amended gradually as the propagation distance and the strength of turbulence increase. The centre of beam gravity is independent of both the propagation distance and the turbulence. However, the position of the intensity maximum changes versus the propagation distance and the turbulence, and is farthest away from the propagation z-axis at a certain propagation distance. When the propagation distance is large enough, the position of the intensity maximum reaches an asymptotic value which increases with decreasing the zenith angle and is largest for the free space case. When the propagation distance is large enough, the position of the intensity maximum is not on the propagation z-axis, and is nearer to the propagation z-axis than the centre of beam gravity. On the other hand, changes in the intensity maximum in the far field are also examined in this paper.

© 2012 OSA

OCIS Codes
(010.1300) Atmospheric and oceanic optics : Atmospheric propagation
(010.1330) Atmospheric and oceanic optics : Atmospheric turbulence
(140.3295) Lasers and laser optics : Laser beam characterization

ToC Category:
Atmospheric and Oceanic Optics

History
Original Manuscript: December 1, 2011
Revised Manuscript: March 7, 2012
Manuscript Accepted: March 8, 2012
Published: March 27, 2012

Citation
Lingyu Dou, Xiaoling Ji, and Peiyun Li, "Propagation of partially coherent annular beams with decentered field in turbulence along a slant path," Opt. Express 20, 8417-8430 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-8-8417


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