Effectively amplification of Stokes wave in double Brillouin cell

Stokes wave amplification in double Brillouin cell has beed investigated. The experimental results shows that the gain is determined by the intensity of input Stokes signal and the coupled case with the pump beam. The gain factor of 67 and the better phase conjugation are obtained when the input Stokes intensity is 0.15mJ and at the optimum coupled case.