Propagation of self-images through convective turbulent air

ZUNINO, L., PÉREZ, D. G., CORTIZO, E., ZERBINO, L. M. & GARAVAGLIA, M.

Porlamar, Isla Margarita, Venezuela

Congreso; V Reunión Iberoamericana de Óptica y VIII Reunión Latinoamericana de Óptica, Láseres y sus Aplicaciones; 2004

International Commission for Optics (ICO)

We analysed the propagation of self-images through a thermal convective laboratory turbulence. The self-images produced by the laser illumination of a Ronchi grid is observed through a parent Ronchi grid of the former in a Schlieren optical system. Both Ronchi grids are parallel, and the self-image of the first grid is displaced half a period with respect to the later one. Light intensity that passes through the system is measured as a function of the turbulence. The turbulence itself is characterized by the observation of the wandering effect on a laser beam that travels the turbulent region perpendicularlyto the self-image propagation optical axis. Both, the intensity variation and the wandering effect data collected are analysed and compared.