Rapid-scanning terahertz precision spectrometer with more than 6 THz spectral coverage.
We report a terahertz time-domain spectrometer with more than 6 THz spectral coverage and 1 GHz resolution based on high-speed asynchronous optical sampling. It operates at 2 kHz scan rate without mechanical delay stage. The frequency error of the system at 60 s acquisition time is determined by comparing a measured water vapor absorption spectrum to data reported in the HITRAN database. The mean error of 87 evaluated absorption lines is 142 MHz.
Klatt
G
G
Department of Physics and Center for Applied Photonics, University of Konstanz, D-78457, Germany. Gregor.Klatt@uni-konstanz.de
Gebs
R
R
Janke
C
C
Dekorsy
T
T
Bartels
A
A
D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D055053:Terahertz Radiation; D055068:Terahertz Spectroscopy / Q000295:instrumentation*