4. Flow visualization

E.L. Bubis,V.V. Lozhkarev, A.N. Stepanov, A.I. Smirnov, V.O. Martynov, S.A. Gusev, E.V. Skorohodov
Institute of Applied Physics RAS, Russia, The Institute for Physics of Microstructures RAS, Russia, Lobachevsky State University of Nizhni Novgorod, Russia

Study of image formation in phase contrast scheme with adaptive filter on the thermal nonlinearity

Self-invertion and self- visualization of small-scale objects and structures in phase contrast scheme with an adaptive filter with nonlocal thermal nonlinearity considered. It is shown that despite the nonlocal process inverted image of acceptable quality and high conversion efficiency. It is shown that the dependence of the conversion of the original image in the inverted image depends on the ratio of its size to the size of the illuminating beam. The experimental results are in good agreement with numerical calculations.
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