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Meeting Materials Science & Technology 2020
Symposium Glasses, Optical Materials, and their Functional Applications: Current Issues in Science & Technology
Presentation Title Terahertz Time-domain Spectroscopy of Glasses
Author(s) S. K. Sundaram
On-Site Speaker (Planned) S. K. Sundaram
Abstract Scope Terahertz (THz) spectroscopy captures molecular and vibrational spectra over 10 GHz-10 THz. In the time domain, access to complex refractive indices makes it a versatile tool. THz time-domain spectroscopy (THz-TDS) has been used to study major glass families. The THz-TDS directly measures the THZ wave’s temporal electric field. Fourier transforms of the time-domain data yield the amplitude and phase of the wave pulse and the real and imaginary parts of the dielectric constant. An overview of the tool and its application to study selected model glass systems, e.g., silica, alkali borate, silicates, and tellurite and nonoxide systems will be presented. Our recent results show a linear correlation between refractive index measurements in visible and terahertz frequencies with systematic rare-earth ion inclusions in aluminosilicate glasses. In addition, our results demonstrate that THz-TDS can be utilized as a means of extending the detectable limits in refractive index measurements of disordered glass structures.
Proceedings Inclusion? Undecided

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

2020 Alfred R. Cooper Young Scholar Award Presentation: Beyond the Average: A Statistical Mechanical Exploration of Topological Fluctuations in Glass-Forming Systems
Cooper Distinguished Lecture: Exploring the Amorphous State of Matter by Roaming About the Network Building Blocks
Decoding Structure-Dynamics Correlations in SiO2 Supercooled Liquid by Machine Learning
Development of YAG-alumina Composites for the Lightening Applications
Effect of Nanoscale Phase Separation on the Fracture Behavior of Glasses: Toward Tough, Yet Transparent Glasses
Effect of Transition Metal Impurities on the Properties of ZnSe Single Crystals
Elucidating Defect Behaviors and Lithium Ion Diffusion Mechanisms in Solid State Electrolytes from Atomistic Computer Simulations
Enhanced Optical Nonlinearity in Bismuth Borosilicate Glass Dispersed with Eu2O3 Stabilized Gold Nanoparticles
Glasses beyond Megabar Pressures
Melt-Quenching vs. Sol-gel vs. Vapor Deposition vs. Irradiation: Influence of the Synthesis Method on the Structure of SiO2
Photo-elastic Confirmation of Fast Surface Relaxation of Silica Glasses in the Presence of Water
Relative Roles of O and Si in Crack Nucleation and Propagation Mechanisms in Amorphous Silica
Surface Reactivity of Multi-component Glasses
Terahertz Time-domain Spectroscopy of Glasses

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