Mr. Belic, EXACT SOLUTION TO PHOTOREFRACTIVE AND PHOTOCHROMIC 2-WAVE MIXING WITHARBITRARY DEPENDENCE ON FRINGE MODULATION, Optics letters, 21(3), 1996, pp. 183-185
An exact solution to the slowly varying envelope wave equations for tw
o-wave mixing with both photorefractive and photochromic gratings pres
ent and with an arbitrary dependence of the gain and absorption on the
fringe modulation is obtained. (C) 1996 Optical Society of America