Terahertz-time-domain spectroscopy

Nuss M C and Orenstein J 1998 Terahertz time domain spectroscopy Millimeter Submillimeter Wave Spectrosc. Solids 74 7-50... 

The observation of slow, confined water motion in AOT reverse micelles is also supported by measured dielectric relaxation of the water pool. Using terahertz time-domain spectroscopy, the dielectric properties of water in the reverse micelles have been investigated by Mittleman et al. [36]. They found that both the time scale and amplitude of the relaxation was smaller than those of bulk water. They attributed these results to the reduction of long-range collective motion due to the confinement of the water in the nanometer-sized micelles. These results suggested that free water motion in the reverse micelles are not equivalent to bulk solvation dynamics. 

Z. Zhang, Y. Zhang, G. Zhao and C. Zhang, Terahertz time-domain spectroscopy for explosive imaging , Optik 118 (2007) 325—329. 

Terahertz time-domain-spectroscopy has been used to distinguish between chiral and racemic hydrogen-bonded cocrystals, and could readily distinguish between the isostructural cocrystals of theophylline with the chiral and racemic forms of both malic and tartaric acids [29]. These findings are of importance since it was concluded that while the respective cocrystal systems were almost identical in molecular structure and supramolecular architecture, the use of terahertz spectroscopy was comparable in sensitivity to X-ray diffraction and more sensitive than Raman spectroscopy to changes in cocrystal architecture. Solid-state nuclear... 

Fig. 4 Comparison of Zero-Field techniques to determine the Zero-Field Splitting in Mni2Ac. (a) Frequency Domain Magnetic Resonance Spectroscopy [105]. (b) Frequency Domain Fourier-Transform Terahertz Spectroscopy [88] (Schnegg, Personal communication), (c) Terahertz Time-Domain Spectroscopy, adapted from [102]. Used with permission. 2001 American Physical Society, (d) Inelastic Neutron Scattering, adapted from [106]. Used with permission. 1999 American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society...

Nguyen KL, Friscic T, Day GM, Gladden LF, Jones W. Terahertz time-domain spectroscopy and the quantitative monitoring of mechanochemical cocrystal formation. Nat Mater 2007 6 206-9. 

Han, P. Y., Tani, M., Usami, M., Kono, S., Kersting, R. and Zhang, X. A direct comparison between terahertz time-domain spectroscopy and far-infrared Fourier transform spectroscopy. /. Appl. Phys. 89 2357-2359, 2001. 

Far-Infrared Spectroscopy and Terahertz Time-Domain Spectroscopy... 

By comparison with the phrase far-infrared spectroscopy, the term terahertz spectroscopy or terahertz time-domain spectroscopy is a relatively recent one, which probably began to be used in the early 1990s. As was already described in Section 1.2.1, the wavenumber region of 400 to 10cm corresponds to the frequency region of (12-0.3) x 10 Hz... 

Far-Infrared Spectroscopy and Terahertz Time-Domain Spectroscopy 273 19.2.3 Spectral Measurements in the Far-Infrared Region... 

Nishizawa, S., Tsumura, N., Kitahara, H., Wada Takeda, M. and Kojima, S. (2002) New application of terahertz time-domain spectroscopy (THz-TDS) to the phonon-polariton observation on ferroelectric crystals. Phys. Med. Biol., 47, 3771-3776. 

Kojima, S., Tsumura, M., Takeda, M.W. and Nishizawa, S. (2003) Far-infrared phonon-polariton dispersion probed by terahertz time-domain spectroscopy. Phys. Rev. B, 67, 035102(1)-035102(5). 

Recent efforts to generate THz radiation have been essentially based on the optical rectification effect in ferroelectrics or the generation of transient photogenerated currents in semiconductors, both with femtosecond pulses some variants of these approaches, also termed terahertz time-domain spectroscopy (THz-TDS), have produced very promising results and open the way to the development of compact coherent sources that emit pulses in the THz-region with durations close to the single terahertz optical cycle. Many technical problems, however, still remain before these schemes can be implemented in reliable devices for tunable THz-radiation. 

Terahertz time domain spectroscopy for material characterization. Proc. IEEE, 95, 1658. 

Eischer, B., Hoffinann, M., Helm, H., Modjesch, G., and Jepson, P.U. (2005) Chemical recognition in terahertz time-domain spectroscopy and imaging. Semicond. Sci. Technol, 20, S246. 

Domey, T.D., Baraniuk, B., and Mitdeman, D.M. (2001) Material parameter estimation with terahertz time-domain spectroscopy. 

DuviHaret, L, Caret, F., and Coutaz, J.-L. (1999) Highly p redse determination of optical constants and sample thickness in terahertz time-domain spectroscopy. Appl. Opt., 38, 409. 

Wietzke, S., Jansen, C., Rutz, F., Mittleman, D.M., and Koch, M. (2007) Determination of additive content in polymeric compounds with terahertz time-domain spectroscopy. Polymer Testing, 26, 614. 

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