title: Time domain measurement of the THz refractivity of water vapor.
abstract: We report the measurement of the essentially frequency independent refractivity of water vapor from 0.1 to 1 THz, independent of the simultaneous strong THz pulse broadening and absorption. The humidity dependent transit time of THz pulses through a 170 m long round trip path was measured to a precision of 0.1 ps, using a mode-locked laser as an optical clock.
authors.affiliation: School of Electrical and Computer Engineering, Oklahoma State University, Stillwater, OK 74078, USA.
authors.forename: Yihong
authors.initials: Y
authors.lastname: Yang
authors.forename: Mahboubeh
authors.initials: M
authors.lastname: Mandehgar
authors.forename: D
authors.initials: D
authors.lastname: Grischkowsky
mesh_terms: D000042:Absorption; D004867:Equipment Design; D006801:Humans; D013227:Steam / Q000032:analysis*; D055053:Terahertz Radiation; D055068:Terahertz Spectroscopy / Q000295:instrumentation*
chemical_list: D013227:Steam