Development of a Gas Plasma-Based THz Time-Domain Spectrometer for the 25 T Split Florida Helix Magnet System

ORAL

Abstract

THz time-domain spectroscopy has been widely used to study two dimensional electron and hole gas systems.$^{\mathrm{1,2}}$ In order to extend the magnetic field range of these measurements we have developed a gas plasma-based THz time--domain spectrometer (TTDS) for use in the 25 T Florida Split Helix magnet system at the National High Magnetic Field Laboratory (NHMFL) at Florida State University. We have successfully quadrupled the bandwidth compared to traditional THz spectrometers (approx. 0.1-2.5 THz) based on non-linear crystals. We have recently performed the first high magnetic field TTDS measurements on a high mobility two dimensional electron gas sample. $^{\mathrm{1}}$Curtis, J. A.\textit{ et al.}, Physical Review B 2016, 93 (15), 155437. $^{\mathrm{2}}$Kamaraju, N.\textit{ et al.}, Applied Physics Letters 2015, 106 (3), 031902.

*This work is supported by Grant Nos. DMR-1056827 (JAC and DJH), DMR-1229217 (SAM and DJH), DMR-1409473 (DK), DOE DE-SC0012635 (DK and DJH) and DMR-1157490 (NHMFL)

–

Authors

  • A.D. Burch

    • Department of Physics,University of Alabama at Birmingham

  • J.A. Curtis

    • National High Magnetic Field Laboratory, Florida State University

  • A.G. Linn

    • Department of Physics,University of Alabama at Birmingham

  • B. Barman

    • Department of Physics,University of Alabama at Birmingham

  • M. Stiles

    • Department of Physics, Utah Valley University

  • J.L. Reno

    • Sandia National Laboratories, Albuquerque, New Mexico

  • Stephen McGill

    • National High Magnetic Field Lab, Florida State University
    • National High Magnetic Field Laboratory

  • D. Karaiskaj

    • Department of Physics, University of South Florida

  • D.J. Hilton

    • Department of Physics,University of Alabama at Birmingham