[10a-W833-1~9] 16.1 Fundamental properties, evaluation, process and devices in disordered materials

[10a-W833-4] Structures and third-order nonlinear optical properties of TeO₂-Ag₂O glasses

〇Tomokatsu Hayakawa¹, Kenta Kato¹, Kosuke Muramatsu¹, Katsuhiro Yamamoto¹, Koichi Hayashi¹, J.-R. Dulcere², Philippe THomas² (1.Nagoya Inst. Tech., 2.Limoges Univ.)

Keywords:silver tellurite glasses, third-order nonlinear optical properties, Synchrotron radiation experiments

In this study, 20Ag₂O-80TeO₂ glasses with high third-order nonlinear optical properties were estimated by several experimental techniques. The third-order nonlinear susceptibilities Re_c⁽³⁾ were enhanced with decreaseing optical bandgap (Eg) and so thier glass structures were investigated by extended X-ray absorption fine strucrture (EXAFS) and anormalous X-ray scattering (AXS) experiments. The key factor is found to be the oxidation state of Ag ions and Te-O distance to understand the enhancement of Re_c⁽³⁾.