Third-order optical nonlinearity of LiX-Li2O-TeO2 and AgX-Ag2O-TeO2 (X = Cl, Br, I) Glasses

Abstract

Third-order optical nonlinear susceptibility X(3) of LiX-Li2O-TeO2 and AgX-Ag2O-TeO2 (X = Cl, Br, I) glasses was measured by third harmonic generation method, and the influence of halide ions on X(3) was examined. The X(3) values were relatively high as 3-5 × 10-13 esu for Li-system glasses and approx. 10-12 esu for Ag-system glasses. The hyperpolarizability of monovalent cation increased with increasing the polarizability of cation (Ag+>Li+) and that of the anion increased with anion radius (O2-