Title :
The THz refractivity of water vapor
Author :
Grischkowsky, D. ; Mandehgar, Mahboubeh ; Yang, Yihong
Author_Institution :
Electr. & Comput. Eng., Oklahoma State Univ., Stillwater, OK, USA
Abstract :
We report the first measurement of the frequency independent refractivity of water vapor from 0.1 to 1 THz. The humidity dependent transit time of THz pulses through a 170 m long round trip path was measured to a precision of 0.1 psec, using a mode-locked laser as an optical clock.
Keywords :
atmospheric electromagnetic wave propagation; atmospheric humidity; atmospheric optics; refractive index; terahertz waves; THz pulses; THz refractivity; frequency independent refractivity; humidity dependent transit time; mode-locked laser; optical clock; round trip path; water vapor; Atmospheric measurements; Frequency measurement; Measurement by laser beam; Pulse measurements; Refractive index; Time measurement;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2012 37th International Conference on
Conference_Location :
Wollongong, NSW
Print_ISBN :
978-1-4673-1598-2
Electronic_ISBN :
2162-2027
DOI :
10.1109/IRMMW-THz.2012.6380122
