About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
|
Glasses and Optical Materials: Current Issues and Functional Applications
|
Presentation Title |
Glass Structure-Terahertz Properties Relationship: Power-Law Model and Deviations in Sodium Borosilicate, Tellurite, and Chalcogenide Glass Families |
Author(s) |
Nicholas J. Tostanoski, S. K. Sundaram |
On-Site Speaker (Planned) |
Nicholas J. Tostanoski |
Abstract Scope |
We review the model previously reported in the 1970s and further advanced that focuses on terahertz (THz) refractive index and absorption coefficient relationship to glass structure and properties through the n(ν)α(ν)=〖K(hν)〗^β power-law. K and β parameters are determined by material properties and glass composition, respectively, and these values have been reported for various silicate glasses in the literature. We have used terahertz time-domain spectroscopy (THz-TDS) to record the refractive index and absorption coefficient across the measured THz bandwidth and ultimately extracted the K and β parameters for several families of borosilicate, tellurite, and chalcogenide glasses. Glasses studied include Na2O·B2O3·SiO2 with either Na2O or B2O3 held constant, Na2O·WO3·TeO2, La2O3·WO3·TeO2, As·S, and As·Se glass systems with compositions varying across their respective compositional spaces. We report a comprehensive set of K and β parameters for all glasses studied and reported in the literature and account for any deviations from the model. |