Temporal instability of phase conjugate beam in a self-pumped Ce: BaTiO_3 phase conjugator at 532nm

摘要

Experimental results are reported on temporal instability of phase conjugate beam in a self-pumped Ce: BaTiO_3 phase conjugator at 532nm. The transition from stable output to unstable one is studied for various input powers, beam diameters and incident angles. Novel results that the phase conjugate output will be unsteady when control parameter P_S is within a range of 2220～3897 mW/cm~2 are presented. A qualitative analysis to temporal instability that instability behaviors result from competitions among the backscattering centers is given.