DEVELOPMENT OF AN ANISOTROPIC TURBULENCE MODEL FOR LASER PROPAGATION IN THE ATMOSPHERE.

Nowadays many devices use a laser beam for dfferent purposes, as it has become a common tool in everyday living. In science, laser has become a top instrument not only in optics but also in metrology. The propagation of laser beams in a turbulent atmosphere has become more and more interesting due to the possibility of using high-data-rate optical transmitters for satellite-communication channels and lasercom systems connecting groundairborne-space or space-airborne-ground data links. This subject also offers a wide range of possible applications aside from free-space optical telecommunications (FSO), like remote sensing, target pointing and tracking, etc. But all of these applications have one common enemy, Earth's atmosphere causes serious degradation of the reliability of such optical communication channels. Moreover, theoretical results are often insufficient to match experimental data. The main problem is that all theoretical approaches have been based on common assumptions about the atmospheric turbulence through which the optical wave travels. For example, it is usual to suppose that the turbulence is homogeneous and isotropic, with a xed power law spectrum in the inertial range of scales. Also, there are spectrum cutoffs at small and large scales that are quantitatively represented by numerical values of inner and outer scales.
Based on the previous statements the aim of this project is to develop a new theoretical model, that has a strong connection with phenomenology than the regular ones. We expect that this new model could make a good representation of the turbulence under weak conditions and also, could be extended to the other turbulence regimes such as anisotropic behavior or non-Kolmogorov turbulence.