Related Experiment Video
Updated: May 24, 2026
All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
Published on: January 19, 2018
Step-scan time-domain terahertz magneto-spectroscopy
D Molter1, G Torosyan, G Ballon
1Fraunhofer Institute for Physical Measurement Techniques IPM, Department of Terahertz Measurement and Systems, Erwin-Schroedinger-Str., Building 56, 67663 Kaiserslautern, Germany. daniel.molter@ipm.fraunhofer.de
Abstract:
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.
