Sample thickness measurement with THz-TDS: Resolution and implications

CY Jen, C Richter - Journal of Infrared, Millimeter, and Terahertz Waves, 2014 - Springer
The accuracy of any measurement with terahertz time-domain spectroscopy (THz-TDS)
depends strongly on knowing and supplying the precise sample thickness when processing …

Data extraction from terahertz time domain spectroscopy measurements

M Scheller - Journal of Infrared, Millimeter, and Terahertz Waves, 2014 - Springer
The potential of terahertz (THz) time domain spectroscopy to simultaneously determine the
complex dielectric parameters of materials and their geometrical thickness is of high interest …

A review on numerical methods for thickness determination in terahertz time-domain spectroscopy

S Mukherjee, NMA Kumar, PC Upadhya… - The European Physical …, 2021 - Springer
The use of numerical methods for thickness extraction in terahertz time-domain
spectroscopy (THz-TDS) is highly deterministic in improving the accuracy of optical …

Decoupling substrate thickness and refractive index measurement in THz time-domain spectroscopy

F Vandrevala, E Einarsson - Optics express, 2018 - opg.optica.org
Terahertz time-domain spectroscopy (THz–TDS) relies heavily on knowing precisely the
thickness or refractive index of a material. In practice, one of these values is assumed to be …

Terahertz multilayer thickness measurements: comparison of optoelectronic time and frequency domain systems

L Liebermeister, S Nellen, RB Kohlhaas… - Journal of Infrared …, 2021 - Springer
A bstract We compare a state-of-the-art terahertz (THz) time domain spectroscopy (TDS)
system and a novel optoelectronic frequency domain spectroscopy (FDS) system with …

Multilayer thickness determination using continuous wave THz spectroscopy

D Stanze, B Globisch, RJB Dietz… - IEEE Transactions …, 2014 - ieeexplore.ieee.org
We present a multilayer thickness measurement system based on optoelectronic continuous
wave THz spectroscopy. Due to its wide tuning range, high frequency resolution, and fast …

Fastest thickness measurements with a terahertz time-domain system based on electronically controlled optical sampling

M Yahyapour, A Jahn, K Dutzi, T Puppe, P Leisching… - Applied Sciences, 2019 - mdpi.com
Featured Application Terahertz thickness gauging of polymers and paint layers; one-
hundred percent inspection of plastic pipes; process control. Abstract We apply a fast …

Fundamentals of measurement in terahertz time-domain spectroscopy

W Withayachumnankul, M Naftaly - Journal of Infrared, Millimeter, and …, 2014 - Springer
Terahertz time-domain spectroscopy (THz-TDS) has emerged as a main spectroscopic
modality to fill the frequency range between a few hundred gigahertz to a few terahertz. This …

Simple material parameter estimation via terahertz time-domain spectroscopy

W Withayachumnankul, B Ferguson, T Rainsford… - Electronics Letters, 2005 - IET
A simple and precise method based on fixed-point iteration is used to estimate dielectric
parameters using terahertz time-domain spectroscopy (THz-TDS). The method converges …

Continuous wave terahertz spectrometer as a noncontact thickness measuring device

R Wilk, F Breitfeld, M Mikulics, M Koch - Applied Optics, 2008 - opg.optica.org
We present a low cost terahertz (THz) spectrometer with coherent detection based on two
simple and robust dipole antennas driven by two laser diodes. The spectrometer covers …