Ultrafast third-order nonlinear optical properties of ZnPc(OBu)(6)(NCS)/DMSO solution.
The ultrafast third-order nonlinear optical properties of ZnPc(OBu)(6)(NCS)/dimethyl sulfoxide solution are investigated by optical Kerr effect (OKE) and pump-probe techniques with femtosecond pulses. Using CS(2) as the reference, the third-order susceptibility of the sample solution is obtained as about 1.40x10(-14) esu at a concentration of 3.00x10(-5) M. The second hyperpolarizability for the sample solution is deduced to be as large as 2.35x10(-31) esu. The dynamic characteristics of the nonlinear optical response and the origins of the OKE signal can be attributed to excited singlet state populations.
Kong
DeGui
D
Department of Physics, Harbin Institute of Technology, Harbin 150001, China.
Duan
WuBiao
W
Zhang
XueRu
X
He
ChunYing
C
Chang
Qing
Q
Wang
YuXiao
Y
Gao
YaChen
Y
Song
YingLin
Y