Journal Article10.1109/2944.571775
A reliable method for extraction of material parameters in terahertz time-domain spectroscopy
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TL;DR: In this article, a novel method for fast and reliable extraction of material parameters in terahertz time-domain spectroscopy was proposed, which could be applied for most materials and requires neither simplifying assumptions nor samples of different thickness for the extraction.
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Abstract: This paper introduces a novel method that allows fast and reliable extraction of material parameters in terahertz time-domain spectroscopy. This method could be applied for most materials and requires neither simplifying assumptions nor samples of different thickness for the extraction. The presented extraction procedure operates either on truncated terahertz signals when temporal windowing is possible, or on full ones otherwise. Some experimental examples covering all practical cases are given. In particular, the extraction procedure treats the tedious case of samples for which internal reflections of the terahertz pulse slightly overlap.
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Citations
Broadband ultra-low-loss mesh filters on flexible cyclic olefin copolymer films for terahertz applications
Fabio Pavanello,Frédéric Garet,M.-B. Kuppam,Emilien Peytavit,Mathias Vanwolleghem,François Vaurette,Jean-Louis Coutaz,Jean-Francois Lampin +7 more
TL;DR: The cyclic olefin copolymer (COC) has recently demonstrated promising properties for THz applications due to its extremely high transparency in the THz region.
Material parameter extraction for terahertz time-domain spectroscopy using fixed-point iteration
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Uncertainty and Ambiguity in Terahertz Parameter Extraction and Data Analysis
TL;DR: In this article, the authors present a comprehensive mathematical survey for parameter extraction using phase sensitive measurement techniques, such as THz time-domain spectroscopy or dispersive Fourier transform Spectroscopy.
Novel method to analyse and reconstruct optical constants of biological substances with application of Kramers–Kronig relations
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References
Far-infrared time-domain spectroscopy with terahertz beams of dielectrics and semiconductors
TL;DR: In this paper, the authors measured the far-infrared absorption and dispersion from 0.2 to 2 THz of the crystalline dielectrics sapphire and quartz, fused silica, and the semiconductors silicon, gallium arsenide, and germanium.
Characterization of an optoelectronic terahertz beam system
TL;DR: In this article, the performance of an optoelectronic terahertz (THz) beam system was described, where the transmitter operation was based on the repetitive, sub-picosecond laser excitation of a Hertzian dipole antenna embedded in a charged coplanar line.
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Optical and electronic properties of doped silicon from 0.1 to 2 THz
TL;DR: Using a source of freely propagating subpicosecond pulses of THz radiation, this article measured the absorption and dispersion of both N and P-type, 1 Ω cm silicon from 0.1 to 2 THz.
THz time-domain spectroscopy of nonpolar liquids
J. E. Pedersen,Søren Rud Keiding +1 more
TL;DR: In this article, a terahertz time-domain spectrometer based on photoconductive dipole antennas driven by femtosecond laser pulses was used to measure the absorption and index of refraction for benzene, carbon tetrachloride, and cyclohexane in the far infrared.
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Radiation patterns from lens-coupled terahertz antennas
TL;DR: Good agreement between theory and experiment is obtained, and it is found that the terahertz beam can be represented by a Gaussian beam emitted from a circular aperture equal to the diameter of the lens.
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