Second harmonic generation and fabrication of transparent K2O-Na2O-Nb2O5-TeO2 glass-ceramics

Abstract

To develop and utilize TeO2-based glasses as nonlinear optical materials or matrix glasses, xK(2)O-(14-x)Na2O-14Nb(2)O(5)-72TeO(2) (x=0 similar to 14 mol%) glasses were prepared using a conventional melt quenching method and then the nano-crystallization behavior and second harmonic generation (SHG) properties of these glasses were investigated. Although SHG was clearly observed in 10K(2)O-4Na(2)O-14Nb(2)O(5)-72TeO(2) glass-ceramics consisting of a nano-crystalline phase, the 14Na(2)O-14Nb(2)O(5)-72TeO(2) glass-ceramic exhibited no SHG. K+ ions played an important role in inducing SHG in the K2O-Na2O-Nb2O5-TeO2 system.