Coherence enhancement of light after double passage through a turbulent medium

Experimental observation of coherence enhancement phenomenon are presented and described. We have illuminated an optically rough moving target through turbulence using two coherent point sources and observed the interference of the scattered fields in the region close to the sources (the region of coherence enhancement) with the help of a special interferometric system. Our study shows that the intensity distribution in the region of coherence enhancement depends on the inner scale of turbulence