[13p-B508-1~21] 3.9 Terahertz technologies

[13p-B508-21] THz-TDS Characterization of Multi-component Glasses and Unified Dielectric Model

〇Osamu Wada¹, D. Ramachari³, C. -S. Yang⁴, Takashi Uchino², C. -L. Pan³ (1.Kobe Univ. Oacis, 2.Kobe Univ. GS-Sci., 3.NTHU, 4.NTNU)

Keywords:multi-compoinent glass, refractive index, terahertz spectroscopy

Terahertz time domain spectroscopy (THz-TDS) data have been used for characterizing dielectric properties of many different high-refractive index, low-loss multi-component glass materials. The relationship between the THz and optical refractive indices has been found to be well characterized by using the ion- to electron-polarizability ratio of each glass family as a unique parameter. Also, for all different glasses, the single oscillator model has been shown to be applicable to describe the dielectric dispersion properties. These results provide a solid foundation for a unified dielectric model for muti-component glasses.