Structure-terahertz property relationship in tellurite glasses

Structure-terahertz (THz) property relationship for sodium tungsten tellurite (NWT) and lanthanum tungsten tellurite (LWT) glass systems is reported and is the first of its kind for non-silicate oxide glasses. Raman spectroscopy was used to determine structural units, connectivity, and glass network. Terahertz time-domain spectroscopy (THz-TDS) was used to record the THz refractive index, n(THz), at 0.502 THz. NWT and LWT glasses record higher measurable n(THz) correlated to a glass network with substantial TeO2 and WO3 content with mixed Te-O-W linkages and TeO2- or WO3-rich content with homonuclear Te-O-Te or W-O-W linkages, respectively. Concurrent examination revealed three distinct regions of n(THz).

Automated summary

This study reports the structure-terahertz property relationship for sodium tungsten tellurite (NWT) and lanthanum tungsten tellurite (LWT) glass systems, which is the first of its kind for non-silicate oxide glasses. The results show three distinct regions of terahertz refractive index.