Title :
Effect of time-delay errors on THz spectroscopy dynamic range
Author :
Humphreys, David A. ; Naftaly, M. ; Molloy, J.F.
Author_Institution :
Nat. Phys. Lab., Teddington, UK
Abstract :
THz spectrometry measurements often exhibit high uncertainties that have previously been attributed to noise. The normalized uncertainties (1-σ) for three signal processing strategies were evaluated using 40 waveform acquisitions of water vapor (0-3 THz). Time-alignment gives ×80 improvement at 1 THz compared with averaging of all results whereas trace rejection strategies only improve the results by ×3.4.
Keywords :
delays; signal processing; terahertz spectroscopy; THz spectrometry measurements; THz spectroscopy dynamic range; frequency 0 THz to 3 THz; normalized uncertainties; signal processing strategy; time-alignment; time-delay errors; trace rejection strategy; water vapor; Delays; Dynamic range; Laser excitation; Measurement by laser beam; Spectroscopy; Uncertainty;
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6956138
