Brillouin induced mutually pumped phase conjugation in reflection geometry

We studied Brillouin induced mutually pumped phase conjugation (MPPC) in an electrostrictive Kerr medium in reflection geometry and obtained solutions illustrating that a weak beam can be phase-conjugated with reflectivities larger than unity. The technique works for a large dynamic range of input beam ratio as the intensity of the weak input beam is increased, while the intensity of the strong incoherent input beam is kept constant below the threshold value for self-SBS