Terahertz time-domain spectroscopy of atmospheric water vapor from 0.4 to 2.7 THz.
Author(s) -
Ronald E. Allman,
Robert J. Foltynowicz
Publication year - 2005
Publication title -
osti oai (u.s. department of energy office of scientific and technical information)
Language(s) - English
Resource type - Reports
DOI - 10.2172/876363
Subject(s) - terahertz radiation , spectroscopy , terahertz spectroscopy and technology , water vapor , absorption (acoustics) , absorption spectroscopy , materials science , analytical chemistry (journal) , terahertz time domain spectroscopy , resolution (logic) , broadband , line (geometry) , optics , atomic physics , optoelectronics , chemistry , physics , meteorology , chromatography , quantum mechanics , artificial intelligence , computer science , geometry , mathematics
We conducted broadband absorption measurements of atmospheric water vapor in the ground state, X {sup 1}A{sub 1} (000), from 0.4 to 2.7 THz with a pressure broadening-limited resolution of 6.2 GHz using pulsed, terahertz time-domain spectroscopy (THz-TDS). We measured a total of seventy-two absorption lines and forty-nine lines were identified as H{sub 2}{sup 16}O resonances. All the H{sub 2}{sup 16}O lines identified were confirmed by comparing their center frequencies to experimental values available in the literature
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