Title :
Determination of water vapor continuum absorption, using long-path THz-TDS without the cross-term
Author :
Yihong Yang ; Mandehgar, Mahboubeh ; Grischkowsky, D.
Author_Institution :
Sch. of Electr. & Comput. Eng., Oklahoma State Univ., Stillwater, OK, USA
Abstract :
We report the latest experimental determination of the water vapor continuum absorption within the atmospheric THz windows, using the long-path THz-TDS system. The continuum absorption was determined, based on the total water vapor absorption for a density of 11.2 g/m3 and the calculated Molecular Response Theory (MRT) resonant line absorption. The experimentally determined RH 0% reference signal eliminated the undesirable cross-term and thereby, increased the accuracy of the measurements.
Keywords :
atmospheric techniques; terahertz spectroscopy; MRT; atmospheric THz windows; long-path THz-TDS system; molecular response theory; resonant line absorption; water vapor continuum absorption; Absorption; Accuracy; Atmospheric measurements; Atmospheric modeling; Humidity; Phase modulation; Pulse measurements;
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6956074
