title: Dynamic polarization holography: 2. Dynamic polarization-holographic gratings and their application.
abstract: Dynamic polarization-holographic gratings with a different profile of anisotropy in the band are presented. Polarization-sensitive recording materials of two types are used: material possessing high dark relaxation and highly reversible material without dark relaxation in which the recorded grating is erased by a circularly polarized beam. For a grating recorded by two orthogonally circularly polarized beams a diffraction efficiency of 20% has been obtained at 3.5 W/cm2 power density during 1 ms recording/erasing time. An all-optical cross commutator based on the matrix of dynamic reprogrammable polarization-holographic microholograms is considered. The amplification of the weak beam at two-wave mixing in polarization-sensitive materials has been shown, with an obtained amplification coefficient of 4.95.
authors: Institute of Cybernetics of the Georgian Technical University, Tbilisi, Georgia. b.kilosanidze@gtu.ge
authors: Barbara
authors: B
authors: Kilosanidze
authors: George
authors: G
authors: Kakauridze
authors: Irakli
authors: I
authors: Chaganava
authors: Yuri
authors: Y
authors: Mshvenieradze