A UNIVERSAL MODULATION FUNCTION AND A GENERALIZED ANALYTICAL SOLUTION FOR PHOTOREFRACTIVE TWO WAVE COUPLING

We proposed a universal form of the modulation function,and derived a generalized analytical solution of the two wave coupled equation in transmission geometry in photorefractive crystal corresponding to the universal modulation function. The generalized analytical solution can be transformed into different analytical solutions reported in previous works on different conditions.In addition, other new analytical solutions can be obtained from the generalized analytical so lution,and an example is given in the present paper.