Telescopic systems with dynamic nonlinear optical correction for distortions

Abstract

This letter deals with the physical interpretation of the 'transitional amplitude' AE, a parameter of percolation theory determined by the derivative mean size of clusters s: AE = x(ds/dx) +s; AE = s( 1 + LR) = where E = xx,, and LR is the average number of red bonds in an incipient infinite cluster.

Restoration of blurred images based on phase conjugation by using single second-order nonlinear parametric processes

“…This scheme, demonstrated in Ref. [3], requires two pump beams. What is more, since third-order nonlinearity is weak, the pump powers must be extremely high in order to achieve a reasonably high nonlinear power reflection coefficient, i.e.…”

Asymmetric dynamic phase holographic grating in nematic liquid crystal

“…They also solve the problem of dynamic holographic correction of distortions. [1][2][3][4][5] Thin dynamic holograms formed in an LC layer are free of limitations imposed by angular and spectral selectivities and, therefore, can be used in wide fields of view and a wide spectral range. However, according to the traditional understanding of the mechanism of dynamic grating formation in LC, the fringe of such grating has to have symmetrical profiles.…”

10.1007/s11449-008-2024-7

“…However, schemes based on thin (plane) dynamic holographic correctors have also been proposed recently [2]. Such schemes are free of the limitations related to spectral and angular selectivity and, therefore, can be used in systems with a large field of view and/or operating with incoherent and nonmonochromatic light.…”