title: Z-scan experiment with anisotropic Gaussian Schell-model beams.
abstract: We analyze the z-scan experiment with anisotropic Gaussian Schell-model (AGSM) beams. The expression for the cross-spectral density of the AGSM beam passing through the lens and onto the nonlinear thin sample is derived. Based on the expression, we simulate the results of the z-scan experiment theoretically and analyze the effects of the e factor (e=w(0x)/w(0y)) and the spatial degree of coherence in the x and y orientations on the on-axis z-scan transmittance. It is found that DeltaTp(-v) becomes larger with an increment of the e factor and the spatial degree of coherence. So we can improve the sensitivity of the z-scan experiment by increasing the e factor and the spatial degree of coherence. The results are helpful for improving the sensitivity of the z-scan experiment.
authors.affiliation: Department of Electric Science & Technology, Huaqiao University, Quanzhou, Fujian 362021, China.
authors.forename: Yongxin
authors.initials: Y
authors.lastname: Liu
authors.forename: Jixiong
authors.initials: J
authors.lastname: Pu
authors.forename: Hongqun
authors.initials: H
authors.lastname: Qi