Measurement of the transmission of the atmosphere from 02 to 2 THz | Zendy

Yihong Yang | Zendy; Alisha Shutler | Zendy; D. Grischkowsky | Zendy

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Measurement of the transmission of the atmosphere from 02 to 2 THz

Author(s) -

Yihong Yang,

Alisha Shutler,

D. Grischkowsky

Publication year - 2011

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.19.008830

Subject(s) - terahertz radiation , attenuation , optics , water vapor , atmosphere (unit) , attenuation coefficient , spectroscopy , materials science , terahertz spectroscopy and technology , absorption (acoustics) , infrared , electromagnetic radiation , refractive index , atmospheric optics , physics , quantum mechanics , meteorology , thermodynamics

The attenuation of electromagnetic wave propagation in the clear atmosphere from low frequencies up to 2 THz is mainly caused by water vapor. Although there have been many numerical simulations and excellent early sub-mm and far-infrared measurements of this attenuation, there has remained controversy about the background absorption in the most promising windows of transparency below 1 THz. Here, we report an accurate terahertz time-domain spectroscopy (THz-TDS) characterization of water vapor from 0.2 to 2 THz. Our results agree with the previous predicted and measured attenuations for the weak water lines, but show more attenuation for the relatively transparent windows between these lines.

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