Relaxation of Reactive Index Grating Caused by Short Laser Pulses in Oriented NLC

Anatoliy A. Kovalev Institute of Electronics, Belarus National Academy of Sciences, Logoisky Trakt 22, Minsk, 220090, Belarus

Natalia A. Usova Institute of Electronics, Belarus National Academy of Sciences, Logoisky Trakt 22, Minsk, 220090, Belarus

Vladimir N. Sadovsky Institute of Electronics, Belarus National Academy of Sciences, Logoisky Trakt 22, Minsk, 220090, Belarus

Svetlana V. Serak Institute of Electronics, Belarus National Academy of Sciences, Logoisky Trakt 22, Minsk, 220090, Belarus

Abstract

The effect of flow-reorientation coupling on to the relaxation process of refractive index grating in nematic liquid crystals has been theoretically investigated. It is shown that in case of oblique incidence of the two beams onto the homeotropic cell the shear flow induced by the electromagnetic field can enhance the amplitude of the director reorientation to about ten times.

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Relaxation of Reactive Index Grating Caused by Short Laser Pulses in Oriented NLC

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Relaxation of Reactive Index Grating Caused by Short Laser Pulses in Oriented NLC

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