Journal of Infrared and Millimeter Waves, Volume. 40, Issue 1, 38(2021)

Properties of Terahertz spectral in aluminium oxide crystal

Gao-Fang LI1,2, Yan-Xia XU1, Tao HU2, Xiao-Bo NIE1, Zheng-Lan BIAN1, Zhi-Ming HUANG2、*, and Jun-Hao CHU2
Author Affiliations
  • 1School of Electronic & Information Engineering,Shanghai University of Electric Power,Shanghai 200090,China
  • 2State Key Laboratory of Infrared Physics,Shanghai Institute of Technical Physics,Chinese Academy of Sciences,Shanghai 200083,China
  • show less

    The spectral characteristics of aluminium oxide (Al2O3) in broadband terahertz wave range (0.2~3.0 THz) were investigated by using terahertz time-domain spectroscopy (THz-TDS). The terahertz time-domain spectra of Al2O3 crystal at different azimuthal angles is obtained by changing the angle between the crystal optical axis and the polarization direction of THz pulse. The refractive index and absorption coefficient of o- and e-waves are calculated, and the index ellipse of Al2O3 in THz band is drawn. The experimental results indicate that Al2O3 has large birefringence and low absorption coefficient in THz, with a birefringence as high as 0.36 and an absorption coefficient lower than 5 cm-1. The phase and amplitude of THz pulse can be modulated based on the birefringence of the crystal. Al2O3 crystal can be used as "shaper" of THz pulse, which provides important reference for the application of terahertz wave in ultra-wideband and ultra-high speed communication systems.

    Tools

    Get Citation

    Copy Citation Text

    Gao-Fang LI, Yan-Xia XU, Tao HU, Xiao-Bo NIE, Zheng-Lan BIAN, Zhi-Ming HUANG, Jun-Hao CHU. Properties of Terahertz spectral in aluminium oxide crystal[J]. Journal of Infrared and Millimeter Waves, 2021, 40(1): 38

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Category: Research Articles

    Received: Aug. 21, 2020

    Accepted: --

    Published Online: Aug. 30, 2021

    The Author Email:

    DOI:10.11972/j.issn.1001-9014.2021.01.007

    Topics