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    Journals >Chinese Optics Letters >Volume 16 >Issue 11 >Page 110401 > Article
    • Chinese Optics Letters
    • Vol. 16, Issue 11, 110401 (2018)
    Terahertz wave generation via pre-ionized air plasma
    Kai Kang1, Liangliang Zhang1、*, Tong Wu2, Kai Li3, and Cunlin Zhang1
    Author Affiliations
  • 1Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Beijing Key Laboratory for Terahertz Spectroscopy and Imaging, and Beijing Advanced Innovation Center for Imaging Technology, Department of Physics, Capital Normal University, Beijing 100048, China
  • 2Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology, School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China
  • 3Daheng New Epoch Technology Inc., Beijing 100085, China
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    DOI: 10.3788/COL201816.110401 Cite this Article Set citation alerts
    Kai Kang, Liangliang Zhang, Tong Wu, Kai Li, Cunlin Zhang. Terahertz wave generation via pre-ionized air plasma[J]. Chinese Optics Letters, 2018, 16(11): 110401 Copy Citation Text show less
    Experimental setup. L: convex lens. PM: parabolic mirror.
    Fig. 1. Experimental setup. L: convex lens. PM: parabolic mirror.
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    (a) THz time-domain waveforms and (b) THz frequency-domain spectra with different modulation powers. The pump power is set as 0.6 W.
    Fig. 2. (a) THz time-domain waveforms and (b) THz frequency-domain spectra with different modulation powers. The pump power is set as 0.6 W.
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    (a) THz signal of three representative excitation pump powers of 0.4 W, 0.6 W, and 0.8 W in the presence of pre-formed plasma as a function of the relative time between the pump beam and the modulation beam. (b) The effect of the modulated laser intensity on the THz wave modulation depth.
    Fig. 3. (a) THz signal of three representative excitation pump powers of 0.4 W, 0.6 W, and 0.8 W in the presence of pre-formed plasma as a function of the relative time between the pump beam and the modulation beam. (b) The effect of the modulated laser intensity on the THz wave modulation depth.
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    THz wave polarization under different modulation powers.
    Fig. 4. THz wave polarization under different modulation powers.
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    Kai Kang, Liangliang Zhang, Tong Wu, Kai Li, Cunlin Zhang. Terahertz wave generation via pre-ionized air plasma[J]. Chinese Optics Letters, 2018, 16(11): 110401
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    Paper Information
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