Using Gaussian decomposion method, we analyze the characteristics of Z-scan curves for nonlocal nonlinear materials in this paper.

The results of the investigation show that nonlinear prolonged surface can be obtained by curved scanning and obvious differences exist in forming results of circular scanning and linear scanning respectively.

Unlike conventional methods,the extended scanning path can vary the number of scanning curves through one position according to the normalized length profile of a group of partitioning curves in a specified direction characterized by curves normal to each boundary and by curves starting or terminating within the surface.

The effect of side chains with different length on the optical properties of two PPV derivatives,poly(2,5-dioctyloxy-1,4phenylenevinylene) and poly(2-methoxy-5-(2'-ethyl-hexyloxy)-1,4-phenylenevinylene),was investigated by absorption spectroscopy,fluorescence spectroscopy and picosecond Z-scan technique.

The third-order optical nonlinearity of inorganic compound RuCl_2(depe)_2 was studied by using Z-scan technique with a double-frequency Nd: YAG laser system at 532nm with pulse width of 8ns, The nonlinear refractive index n_2 of RuCl_2(depe)_2 was measured which was about 5.

The linear and nonlinear optical properties of three porphyrin compounds with different substituents,meso-tetra(p-hydroxyphenyl) porphyrin [T(4-HP)P],meso-tetra(p-esterphenyl) porphyrin [T(4-EP)P] and meso-tetra(p-bromophenyl) porphyrin [T(4-BrP)P] have been investigated by using Absorption spectroscopy,fluorescence spectroscopy and picosecond Z-scan technique.

Theory analysis on Z-scan technique of cascade structure for the nonlinear absorption materials;

Roboticized Laser Beam Z-scan System Based on Labview;

Theoretical analysis of Z-scan using one dimensional partially coherent beams;