Measurement of water absorption coefficient using terahertz time-domain spectroscopy

Author

Suzuki, Takehito ; Takayama, Koyuru ; Yamauchi, Satoshi ; Imai, Yoh ; Tonouchi, Masayoshi

Author_Institution

Ibaraki Univ., Hitachi, Japan

fYear

2009

fDate

21-25 Sept. 2009

Firstpage

1

Lastpage

2

Abstract

Terahertz time-domain spectroscopy (TDS) is advantageous to analyze the absorption spectrum of water since the terahertz electromagnetic waves are absorbed very well. The measurement confirms the absorption coefficient of the pure water increases with the frequency from 0.04 THz to 0.8 THz. Moreover, the absorption increases with an increment of the concentration of Na⁺ ion in the pure water especially in the low frequency region.

Keywords

absorption coefficients; positive ions; sodium; terahertz spectroscopy; terahertz wave spectra; water; H₂O; Na⁺; frequency 0.04 THz to 0.8 THz; pure water; sodium ion concentration; terahertz electromagnetic waves; terahertz time-domain spectroscopy; water absorption coefficient; Dielectrics; Electromagnetic wave absorption; Frequency; Hydrogen; Mirrors; Spectroscopy; Stimulated emission; Submillimeter wave measurements; Time domain analysis; Water;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared, Millimeter, and Terahertz Waves, 2009. IRMMW-THz 2009. 34th International Conference on

Conference_Location

Busan

Print_ISBN

978-1-4244-5416-7

Electronic_ISBN

978-1-4244-5417-4

Type

conf

DOI

10.1109/ICIMW.2009.5325641

Filename

5325641