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Chinese Journal of Lasers, Volume. 50, Issue 17, 1714018(2023)

Intense Terahertz Pulse Generation and Nonlinear Effect of GaSe Crystal

Peng Suo1, Chen Wang1, Gaofang Li2, Kaiwen Sun1, Wenjie Zhang1, Xian Lin1, Zhiming Huang3, and Guohong Ma1、*
Author Affiliations
  • 1Department of Physics,Shanghai University,Shanghai 200444,China
  • 2School of Electronic & Information Engineering,Shanghai University of Electric Power,Shanghai 200090,China
  • 3State Key Laboratory of Infrared Physics,Shanghai Institute of Technical Physics,Chinese Academy of Sciences,Shanghai 200083,China
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    Configuration diagram for strong terahertz pump-optical detection system

    Fig. 1. Configuration diagram for strong terahertz pump-optical detection system

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    Characterization of strong terahertz pulse. (a) Measurement results of knife-edge method in horizontal direction; (b) measurement results of knife-edge method in vertical direction; (c) time-domain waveform of terahertz pulses ; (d) frequency domain spectrum of terahertz pulses

    Fig. 2. Characterization of strong terahertz pulse. (a) Measurement results of knife-edge method in horizontal direction; (b) measurement results of knife-edge method in vertical direction; (c) time-domain waveform of terahertz pulses ; (d) frequency domain spectrum of terahertz pulses

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    Nonlinear optical response induced by normalized strong terahertz pulse. (a) Evolution of phase retardation induced by pumped terahertz pulse over time under different peak field strengths with comparison between measured signal at field strength of 632 kV/cm and terahertz time-domain pulse shown in inset; (b) dependence of peak value of induced phase retardation on terahertz peak field strength and fitted curve

    Fig. 3. Nonlinear optical response induced by normalized strong terahertz pulse. (a) Evolution of phase retardation induced by pumped terahertz pulse over time under different peak field strengths with comparison between measured signal at field strength of 632 kV/cm and terahertz time-domain pulse shown in inset; (b) dependence of peak value of induced phase retardation on terahertz peak field strength and fitted curve

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    Peng Suo, Chen Wang, Gaofang Li, Kaiwen Sun, Wenjie Zhang, Xian Lin, Zhiming Huang, Guohong Ma. Intense Terahertz Pulse Generation and Nonlinear Effect of GaSe Crystal[J]. Chinese Journal of Lasers, 2023, 50(17): 1714018

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    Paper Information

    Category: terahertz technology

    Received: May. 5, 2023

    Accepted: May. 25, 2023

    Published Online: Sep. 1, 2023

    The Author Email: Ma Guohong (ghma@staff.shu.edu.cn)

    DOI:10.3788/CJL230798

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology