Step-scan time-domain terahertz magneto-spectroscopy

We present a novel approach for terahertz time-domain spectroscopy of magneto-optic phenomena. The setup used in this work combines a tabletop pulsed magnet and a standard terahertz time-domain spectroscopy system. The approach is based on repetitive operation of the pulsed magnet and step-wise incr...

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Bibliographic Details
Published inOptics express Vol. 20; no. 6; pp. 5993 - 6002
Main Authors Molter, D, Torosyan, G, Ballon, G, Drigo, L, Beigang, R, Léotin, J
Format Journal Article
LanguageEnglish
Published United States 12.03.2012
Subjects
Equipment Design
Equipment Failure Analysis
Magnets
Terahertz Spectroscopy
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Summary:We present a novel approach for terahertz time-domain spectroscopy of magneto-optic phenomena. The setup used in this work combines a tabletop pulsed magnet and a standard terahertz time-domain spectroscopy system. The approach is based on repetitive operation of the pulsed magnet and step-wise increment of the delay time of the time-domain spectroscopy system. The method is demonstrated by plotting the magneto-transmission spectra of linearly polarized THz pulses through the hole gas of a Ge sample and the electron gas of GaAs, InSb and InAs samples. Cyclotron resonance spectra are displayed in the frequency range from 200 GHz to 2 THz and for a magnetic field up to 6 T. The GaAs spectra are analyzed in more detail using simulations based on the Drude model.
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ISSN:1094-4087
1094-4087
DOI:10.1364/oe.20.005993