Author/Authors :
Golemme، نويسنده , , A and Kippelen، نويسنده , , B and Peyghambarian، نويسنده , , N، نويسنده ,
Abstract :
An unusual dependence of the diffraction efficiency on the applied electric field was observed in four-wave mixing experiments on polymer dispersed nematics. The data were interpreted on the basis of a simple model which considers the orientational nature of the photorefractivity in liquid crystalline materials. Such model should also be of relevance for any material with orientational contributions to photorefractivity.
