Abstract

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.

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History
Original Manuscript: October 7, 2009
Manuscript Accepted: November 20, 2009
Revised Manuscript: November 19, 2009
Published: November 30, 2009

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Author Affiliations

G. Klatt, R. Gebs, C. Janke, T. Dekorsy, A. Bartels

Department of Physics and Center for Applied Photonics, University of Konstanz, D-78457, Germany

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