• DocumentCode
    644565
  • Title

    THz-emission probe of surface-electronic transitions in a topological insulator

  • Author

    Li-Guo Zhu ; Kubera, B. ; Kin Fai Mak ; Jie Shan

  • Author_Institution
    Inst. of Fluid Phys., China Acad. of Eng. Phys., Mianyang, China
  • fYear
    2013
  • fDate
    1-6 Sept. 2013
  • Firstpage
    1
  • Lastpage
    2
  • Abstract
    Upon femtosecond laser pumping of a topological insulator Bi2Se3, we observed efficient THz generation from the surface electrons. By performing polarization-resolved studies on the emitted THz spectrum, two emission mechanisms are identified. THz emission spectroscopy provides a valuable spectroscopic tool for studies of the dynamics of the surface electrons in centrosymmetric topological insulators.
  • Keywords
    bismuth compounds; high-speed optical techniques; optical pumping; terahertz wave generation; terahertz wave spectra; topological insulators; Bi2Se3; THz emission spectroscopy; THz generation; THz-emission probe; centrosymmetric topological insulators; emission mechanisms; femtosecond laser pumping; spectroscopic tool; surface electrons; surface-electronic transitions; topological insulator; Laser excitation; Nonlinear optics; Optical pulses; Optical surface waves; Surface emitting lasers; Topological insulators; Ultrafast optics;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2013 38th International Conference on
  • Conference_Location
    Mainz
  • Type

    conf

  • DOI
    10.1109/IRMMW-THz.2013.6665533
  • Filename
    6665533
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=644565