Optical Properties of Tetrahydrofuran Clathrate Hydrates with Polyvinylpyrrolidone (THF + H2O + PVP) Revealed by Terahertz (THz) Time-Domain Spectroscopy

2014 ◽  
Vol 60 (2) ◽  
pp. 238-246 ◽  
Author(s):  
Hyery Kang ◽  
Dong-Yeun Koh ◽  
Yun-Ho Ahn ◽  
Seonghoon Jung ◽  
Jaehun Park ◽  
...  
Keyword(s):  
Optical Properties ◽  
Time Domain ◽  
Clathrate Hydrates ◽  
Time Domain Spectroscopy

Soot Optical Properties in the Terahertz Spectra Domain

2012 ◽  
Vol 134 (7) ◽  
Author(s):  
Fei Wang ◽  
Ting Xu ◽  
Zhishen Qiang ◽  
Qunxing Huang ◽  
Dong Liu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Time Domain ◽  
Wavelength Region ◽  
Optical Methods ◽  
Optical Data ◽  
Refractive Indices ◽  
Spectroscopy Technique ◽  
Terahertz Time Domain Spectroscopy ◽  
Time Domain Spectroscopy ◽  
Combustion Diagnostics

For understanding and accurately modeling combustion, the important questions are what species are present in the flame, and the spatial distribution and temperature of these species. Traditional optical methods used only the electromagnetic waves in the wavelength region from the ultraviolet region up to the infrared. Terahertz time-domain spectroscopy technique can be used for the combustion research as a novel tool. However, for some sooty combustion environments, the strong absorption, spectral interference from soot scattering, and fluorescence from large molecules must be considered. The optical properties of soot in the terahertz domain are the main basic data for terahertz application. In this paper, the terahertz time-domain spectroscopy technique was used to study the optical properties of flame soot within 0.2–1.6 THz. The complex refractive indices of the soot were deduced by the fixed-point iteration method. In order to validate the results, the complex refractive indices of the soot from the four different fuel flames were deduced. It was found that the complex refractive indices in the terahertz domain of the soot from the different fuel flames are very close to each other. The comparisons of complex refractive indices between the visible–IR domain and the terahertz domain indicate that the value of absorption index in terahertz domain is smaller than in IR domain, which implies that the terahertz wave will penetrate the sooty flame with smaller absorption than the IR rays. The results can provide the basic optical data of flame soot for the application of terahertz time-domain spectroscopy technique in the optical combustion diagnostics and extend the optical combustion diagnostics application area.

Studying human and animal skin optical properties by terahertz time-domain spectroscopy

2016 ◽  
Vol 80 (4) ◽  
pp. 479-483 ◽  
Author(s):  
O. P. Cherkasova ◽  
M. M. Nazarov ◽  
E. E. Berlovskaya ◽  
A. A. Angeluts ◽  
A. M. Makurenkov ◽  
...  
Keyword(s):  
Optical Properties ◽  
Time Domain ◽  
Terahertz Time Domain Spectroscopy ◽  
Time Domain Spectroscopy ◽  
Animal Skin

Magneto-Optical Properties of Tri-Layer Graphene Measured via Terahertz Time Domain Spectroscopy

2021 ◽  
Vol 213 (1) ◽  
pp. 35-40
Author(s):  
Hong-Ying Mei ◽  
Wen Xu ◽  
Chao Wang ◽  
Ru-Xian Yao ◽  
Fu-Jun Chen ◽  
...  
Keyword(s):  
Optical Properties ◽  
Time Domain ◽  
Terahertz Time Domain Spectroscopy ◽  
Time Domain Spectroscopy ◽  
Layer Graphene

Electrical and optical properties of polyfluorene thin films studied by THz time-domain spectroscopy

2011 ◽  
Vol 44 (26) ◽  
pp. 265101 ◽  
Author(s):  
Alexander V Andrianov ◽  
Andrey N Aleshin ◽  
Valeri N Truchin ◽  
Alexander V Bobylev
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Time Domain ◽  
Electrical And Optical Properties ◽  
Time Domain Spectroscopy

Optical Properties of Laminarin Using Terahertz Time-Domain Spectroscopy (abstract)

2009 ◽  
Author(s):  
Hee Jun Shin ◽  
Inhee Maeng ◽  
Seung Jae Oh ◽  
Sung In Kim ◽  
Ha Won Kim ◽  
...  
Keyword(s):  
Optical Properties ◽  
Time Domain ◽  
Terahertz Time Domain Spectroscopy ◽  
Time Domain Spectroscopy
Sign in / Sign up

Export Citation Format

Share Document