Beam wander of J0- and I0-Bessel Gaussian beams propagating in turbulent atmosphere

• Published in: Applied physics. B, Lasers and optics Lasers and optics, 2010, Vol.98 (1), p.195-202
• Main Authors: Çil, C. Z., Eyyuboğlu, H. T., Baykal, Y., Korotkova, O., Cai, Y.
• Format: Article
• Language: English
• Subjects: Atmospheric turbulence; Beams (radiation); Convection, turbulence, diffusion. Boundary layer structure and dynamics; Earth, ocean, space; Engineering; Exact sciences and technology; External geophysics; Focusing; Fundamental areas of phenomenology (including applications); Gaussian; Gaussian beams (optics); Lasers; Meteorology; Optical Devices; Optics; Photonics; Physical Chemistry; Physics; Physics and Astronomy; Propagation; Quantum Optics; Turbulence; Wave optics; Wave propagation; Wave propagation, transmission and absorption
• ISSN: 0946-2171; 1432-0649
• DOI: 10.1007/s00340-009-3724-4

Root mean square (rms) beam wander of J 0 -Bessel Gaussian and I 0 -Bessel Gaussian beams, normalized by the rms beam wander of the fundamental Gaussian beam, is evaluated in atmospheric turbulence. Our formulation is based on the first and the second statistical moments obtained from the Rytov series. It is found that after propagating in atmospheric turbulence, the collimated J 0 -Bessel Gaussian and the I 0 -Bessel Gaussian beams have smaller rms beam wander than that of the Gaussian beam, regardless of the choice of Bessel width parameter. However, the extent of such an advantage depends on the chosen width parameter, Gaussian source size, propagation distance and the wavelength. Focusing at finite distances of the considered beams causes the rms beam wander to decrease sharply at the propagation distances equal to the focusing parameter.