Dielectric response and polarization mechanism of alkali silicate glasses in gigahertz to terahertz frequency range

Oxide glasses are dielectric materials with potential applications in high-frequency communications; hence, their properties the gigahertz to terahertz frequency range should be investigated. In this study, of silica glass and five single alkali silicate were measured at 0.5–10 THz using time-domain spectroscopy (THz-TDS) far-infrared (FIR) spectroscopic ellipsometry. At THz, exhibited low dispersion a constant loss. By contrast, high dispersion, loss higher than those glass. The shape profile depended on alkali-metal ions, it was broader for lighter ions such as Li sharper heavier Cs ions. peak shifted toward lower weight alkali-silicate increased. To understand complex permittivity calculated molecular dynamics simulations. theoretical results qualitatively agreed experimental data. Ion analysis revealed that vibrate migrate under an applied electric field, which affects frequencies. fabricate filter devices temperatures, metals added glass; therefore, minimum amount light used minimize while maintaining productivity. This article is protected by copyright. All rights reserved