Primary Investigation of Optical Power Limiting of M(DMID)_2C_x and M(DMIT)_2C_x (M=Ni, Cu) (C=TMA, TBA)

摘要

Optical limiting property of two types of charge transfer salt [M(DMID)_2][C]_x and [M(DMIT)_2][C]_x (M = Ni, Cu) (C=TMA, TBA) is studied. The comparison of these two series complexes demonstrates that the optical limiting effect of the Ni-based complexes is better than that of the Cu-based complexes, both of them are a little less than that of C_(60). The nonlinear absorption coefficient that determined by optical limiting technique for Ni-based complexes is about one order of magnitude higher than that of Cu-based complexes. On the other hand, partial charge transfer may enhance the optical limiting effect in the Cu-based complexes, but it doesn't occur in the Ni-based complexes. All may be attributed to the typical column structure that caused by plan configuration.