Nonlinear optical properties of Eu2O3 doped 5ZnO20Nb2O5-75TeO2 glasses

The third-order optical nonlinearities, including third-order nonlinear susceptibility chi((3)), nonlinear refractive index (n(2)) and temporal response, were measured with forward DFWM using Nd:YAG mode-locked pulse laser. The results show that Eu2O3 doped 5ZnO-20Nb(2)O(5)-75TeO(2) glasses have large n(2) and ultra-fast temporal response. Raman spectra show that Eu2O3 dopant induces the changes in the local structure of glasses. The higher the dopant concentration, the larger the nonlinear refractive n(2) and the faster the temporal response. The enhancement on the third-order optical nonlinearities can be attributed to the deformation of the electronic clouds in [TeO4] enhanced by Eu2O3 dopant.