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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 6 — Mar. 12, 2012
  • pp: 5993–6002

Step-scan time-domain terahertz magneto-spectroscopy

D. Molter, G. Torosyan, G. Ballon, L. Drigo, R. Beigang, and J. Léotin  »View Author Affiliations


Optics Express, Vol. 20, Issue 6, pp. 5993-6002 (2012)
http://dx.doi.org/10.1364/OE.20.005993


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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.

© 2012 OSA

OCIS Codes
(230.3810) Optical devices : Magneto-optic systems
(300.6495) Spectroscopy : Spectroscopy, teraherz

ToC Category:
Spectroscopy

History
Original Manuscript: January 10, 2012
Revised Manuscript: February 17, 2012
Manuscript Accepted: February 17, 2012
Published: February 27, 2012

Citation
D. Molter, G. Torosyan, G. Ballon, L. Drigo, R. Beigang, and J. Léotin, "Step-scan time-domain terahertz magneto-spectroscopy," Opt. Express 20, 5993-6002 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-6-5993


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