Peculiarities of Propagation of Annular and Laguerre-Gaussian Beams in the Atmosphere

The calculation and analysis of passing of annular beams and Laguerre-Gaussian beams through the atmosphere are conducted. Annular beams are formed by the optical scheme with two axicons. The calculation showed that in a rather large range of distances the maximal intensity of annular beams is higher than of Laguerre-Gaussian beams. The scheme is considered when in the receiving plane a Fourier-transforming lens with one-mode fiber in a focal plane is situated. Scintillation indices are calculated of field power in lens plane and fiber plane.