Linear and nonlinear optical properties of Gd3+ doped zinc borotellurite glasses for all-optical switching applications

• Main Authors: Chua, Ee Von, Mohamed Kamari, Halimah, Zakaria, Azmi, Che Abdullah, Che Azurahanim, Abd Azis, Muhammad Noorazlan, Mohd Fudzi, Faznny
• Format: Article
• Language: English
• Published: Elsevier 2016
• Online Access: http://psasir.upm.edu.my/id/eprint/52157/1/52157.pdf; http://psasir.upm.edu.my/id/eprint/52157/; http://www.sciencedirect.com/science/article/pii/S2211379716300742

In this work, linear and nonlinear optical parameters of zinc borotellurite glasses doped with Gd3+ have been studied for all-optical switching applications. A series of gadolinium zinc borotellurite glasses were synthesized by using conventional melt quenching technique. Optical absorption spectra were recorded by UV–vis spectroscopy. From the optical absorption spectra, the cut-off wavelength, optical band gap, Urbach energy and refractive index have been determined and are related to the structural changes in the glass systems. The nonlinear optical properties of Gd3+ doped glasses are investigated by using Z-scan technique. The values of nonlinear refractive index and absorption coefficient with closed and opened apertures of the Z-scan, respectively, were determined for proper utilization in nonlinear optical devices.