Terahertz time-domain spectroscopy of silicate glasses and the relationship to material properties

Abstract

Terahertz (THz) time-domain transmission spectroscopy was used to obtain the absorption coefficients and refractive indices of silica, Pyrex, and seven different Schott glasses. The refractive indices were analyzed using the Clausius–Mossotti equation, and the absorption coefficients in terms of the power-law model of far-infrared absorption. Relationships were observed between THz absorption and refractive indices on the one hand, and glass properties on the other. THz transmission data have been shown to provide a useful insight into glass structure.

Simultaneous measurements of terahertz emission and magneto-optical Kerr effect for resolving ultrafast laser-induced demagnetization dynamics

“…[24]; the absorption of glass can be approximated by a quadratic function which increases upon an increase of the frequency of the THz radiation. Due to this fact, glass effectively suppresses high frequencies of the emitted radiation.…”

Uncertainty and Ambiguity in Terahertz Parameter Extraction and Data Analysis

“…The following phase relation links the phase change of the sample pulse relative to the reference pulse, ϕ s − ϕ r ≡ arg(δ) mod 2π, to n s [32]:…”

Multi‐Spectral Materials: Hybridisation of Optical Plasmonic Filters and a Terahertz Metamaterial Absorber

“…The simulation results imply that the silicon dioxide we have deposited has a higher absorption coeffi cient than has previously been documented. [ 37 ] In this article we have demonstrated the design, fabrication and characterisation of a new type of multi-spectral material that hybridises optical plasmonic fi lters with a THz MM absorber to combine multiple functionalities as well as multispectral capabilities into a single material. Our device exhibits multiple functionalities by combining the THz absorber material within the colour fi lter structure and therefore eliminates the need for a separate material for THz detection.…”