M. D. Zidan,A. Allahham.Numerical calculation of Z-scan measurements for nonlinear media with large phase shift[J].Optoelectronics Letters,2024,(3):177-182 Numerical calculation of Z-scan measurements for nonlinear media with large phase shift Author Name Affiliation M. D. Zidan  Department of Physics, Atomic Energy Commission of Syria, P. O. Box 6091, Damascus, Syria  A. Allahham  Department of Physics, Atomic Energy Commission of Syria, P. O. Box 6091, Damascus, Syria  Abstract:       We have reported the characteristics of a Z-scan for the poly(azaneylylidene-acylene) (DAZA) polymer, as nonlinear medium with a large nonlinear phase shift using continuous-wave (CW) laser beam. It has been verified that the Fresnel diffraction model is applicable for analyses of Z-scan measurements with DAZA polymer at high laser power. It was found that Z-scan curves with peak-to-valley features appear as the applied light intensity increases in the case of a large nonlinear phase shift. The Z-scan experiments were carried out using a CW laser to verify the theoretical calculations in the case of a large nonlinear phase shift model. Our results show good agreements between the experimental data and the proposed theoretical models. Hits: 0 Download times: 0 View Full Text    Download reader