Results 201 to 210 of about 3,858 (229)

Polarimetric terahertz time-domain spectroscopy

SPIE Proceedings, 2012
One polarization measurement technology is proposed to apply in the basic Terahertz time domain spectroscopy (THz- TDS) using only one rotatable polarizer. The method to upgrade such a polarimetric Terahertz time-domain Spectroscopy (P-THz-TDS) was presented.
Yandong Gong, Hui Dong
openaire   +1 more source

On-Chip Terahertz Time-Domain Spectroscopy

2021
Terahertz time-domain spectroscopy (THz-TDS) allows the direct measurement of optical and charge carrier properties of materials in a region of the electromagnetic spectrum inaccessible to most other spectroscopic techniques. We have adapted the technique to an on-chip arrangement that allows us to measure these properties in nanoscale materials with ...
openaire   +1 more source

Time-Domain Terahertz Spectroscopy and Sensing

2001
Spectroscopy in the terahertz (THz) region of the electromagnetic spectrum is an important and growing field of research with a broad range of applications. The characteristic properties of THz radiation (1 THz = 1012 Hz), localised between the infrared and the microwave frequencies, suggest many applications in the spectroscopy of gases, liquids and ...
P. Haring Bolivar, M. Brucherseifer, M. Nagel, H. P. M. Pellemans, H. Kurz   +4 more
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Terahertz Time‐Domain Spectroscopy of Gases, Liquids, and Solids

ChemPhysChem, 2011
AbstractThe techniques and methods employed in the spectroscopic characterization of gases, liquids, and solids in the terahertz frequency range are reviewed. Terahertz time‐domain spectroscopy is applied to address a broadband frequency range between 100 GHz and 5 THz with a sub‐10 GHz frequency resolution.
Michael, Theuer, Srikantaiah Sree, Harsha, Daniel, Molter, Garik, Torosyan, René, Beigang   +4 more
openaire   +2 more sources

Far-infrared terahertz time-domain spectroscopy of flames

Optics Letters, 1995
We present what is to our knowledge the first comprehensive far-infrared absorption measurement of flames. These measurements, covering the region of 7-88 wave numbers (0.2-2.65 THz) are only now made possible by the technique of terahertz time-domain spectroscopy. We observe a large number of absorption lines-including those of water, CH, and NH(3)-in
R A, Cheville, D, Grischkowsky
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Material parameter estimation with terahertz time-domain spectroscopy

Journal of the Optical Society of America A, 2001
Imaging systems based on terahertz (THz) time-domain spectroscopy offer a range of unique modalities owing to the broad bandwidth, subpicosecond duration, and phase-sensitive detection of the THz pulses. Furthermore, the possibility exists for combining spectroscopic characterization or identification with imaging because the radiation is broadband in ...
T D, Dorney, R G, Baraniuk, D M, Mittleman   +2 more
openaire   +2 more sources

Automatically Detecting Peaks in Terahertz Time-Domain Spectroscopy

2010 20th International Conference on Pattern Recognition, 2010
To classify spectroscopic measurements it is necessary to have comparable methods of evaluation. In Terahertz (THz) time-domain spectroscopy, as a new technology, neither the presentation of the data nor the peak detection is standardized yet. We propose a procedure for automatic peak extraction in THz spectra of chemical compounds. After preprocessing
Henrike Stephani, Joachim Jonuscheit, Christoph Robine, Bettina Heise   +3 more
openaire   +1 more source

Principles of Terahertz Time-Domain Spectroscopy

2018
International ...
Coutaz, Jean-Louis, Garet, Frédéric, Vincent, Wallace   +2 more
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Terahertz Time-Domain Spectroscopy of Imidazolium Ionic Liquids

The Journal of Physical Chemistry B, 2007
We have measured the terahertz (THz) complex dielectric spectra of imidazolium ionic liquids by THz time-domain spectroscopy (THz-TDS) in the frequency range from 5 (0.15 THz) to 140 cm(-1) (4.2 THz). The ionic liquids investigated are 1-ethyl-3-methylimidazolium (EMIm+)/trifluoromethanesulfonate (TfO-), EMIm+/tetrafluoroborate (BF(4)-), 1-butyl-3 ...
Kohji, Yamamoto, Masahiko, Tani, Masanori, Hangyo   +2 more
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Terahertz Time-Domain Spectroscopy of Selected Layered Silicates

Clays and Clay Minerals, 2009
AbstractMicaceous layer silicate clay minerals are attractive materials for applications involving non-linear optics because of their low cost and ability to form well ordered, platy aggregates, but such applications require precise knowledge of the dielectric behavior of the clay.
Janek, Marián, Bugár, Ignác, Lorenc, Dusan, Szöcs, Vojtech, Velic, Dusan, Chorvát, Dusan   +5 more
openaire   +2 more sources