Mahdy, A. and Furat A. Al-Saymari 2024. Investigation of nonlinear optical properties of Sudan red G dye solutions using diffraction rings patterns and z-scan technique. University of Thi-Qar Journal of Science. 11, 2 (Dec. 2024), 116–124. DOI:https://doi.org/10.32792/utq/utjsci/v11i2.1265.