Author/Authors :
Zhu، نويسنده , , Xiao Rong and Niu، نويسنده , , Rui Min and Sun، نويسنده , , Zhen Rong and Zeng، نويسنده , , He Ping and Wang، نويسنده , , Zu Geng and Lang، نويسنده , , Jian Ping، نويسنده ,
Abstract :
We report the nonlinear optical properties of one metal cluster [PPh4][C*pWS3(CuBr)3(dppm)] by picosecond and nanosecond laser pulses. The third-order nonlinear susceptibility χ(3) is measured by degenerate four-wave mixing, the nonlinear absorption by the Z-scan technique, and optical limiting response by the transmission technique. The experimental data are theoretically fitted, and the mechanism for the third-order optical nonlinearities and the optical limiting properties are discussed, and the absorption cross sections of the ground state and the excited state are evaluated by a rate equation model.
