Optical and Geometrical Properties from Terahertz Time-Domain Spectroscopy Data.

ABSTRACT: Terahertz waves are nondestructive and non-ionizing to synthetic and natural materials, including polymeric and biological materials. As a result, terahertz-based spectroscopy has emerged as a suitable technique to uncover fundamental molecular mechanisms and material properties in this electromagnetic spectrum regime. In terahertz time-domain spectroscopy (THz-TDS), the material's optical properties are resolved using the raw time-domain signals collected from the sample and air reference data depending on accurate prior knowledge of the sample geometry. Alternatively, different spectral analysis algorithms can extract the complex index of refraction of optically thick or optically thin samples without specific thickness knowledge. A THz-TDS signal without apparent Fabry-Pérot oscillation

SUBMITTER: Youssef G 

PROVIDER: S-EPMC11642474 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature