Third-order nonlinear susceptibility tensor elements of CS2 at femtosecond time scale.

The real parts of third-order nonlinear susceptibility components of CS2 are determined by polarized lights Z-Scan technique at 800 nm, and imaginary part is verified to be negligible. The contributions to susceptibility components from electron and nuclear are separated. These susceptibility values can be used as the reference values for third-order nonlinear susceptibility measurements by degenerate four-wave-mixing, optical Kerr gate/optical Kerr effect, optical heterodyne detection of optical Kerr effect, the ellipse rotation and so on. (C)2011 Optical Society of America