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首页> 外文期刊>Journal of Infrared, Millimeter and Terahertz Waves >Theoretical and Experimental Studies of Terahertz Wave Propagation in Unmagnetized Plasma
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Theoretical and Experimental Studies of Terahertz Wave Propagation in Unmagnetized Plasma

机译：太赫兹波在非磁化等离子体中传播的理论和实验研究

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The spacecraft will experience the well-known “blackout” problem when it re-entry into the Earth’s atmosphere, which results in communication failures between the spacecraft and the ground control center. It is important to study the properties of terahertz (THz) wave propagation in plasma for communications using THz wave is an alternative method for solving the blackout problem. The properties of THz wave propagation in plasma have been studied with the ZT-FDTD (Z-Transform Finite Difference Time Domain) method and experimental method in this paper. The dependence of plasma density, plasma collision frequency, thickness of plasma and THz wave frequency on the THz wave propagation are presented. The properties of 0.22THz electromagnetic wave propagation in plasma have been studied experimentally with shock tube, and the experimental results are in good agreement with the FDTD ones. Both the FDTD and experimental results indicate that communications using THz wave is an alternative and effective way to solve the blackout problem.
机译：航天器重新进入地球大气层时将遇到众所周知的“停电”问题，这将导致航天器与地面控制中心之间的通信失败。研究太赫兹（THz）波在等离子体中的传播特性对于使用THz波进行通信是解决停电问题的另一种方法，这一点很重要。本文采用ZT-FDTD（Z变换有限差分时域）方法和实验方法研究了太赫兹波在等离子体中的传播特性。给出了等离子体密度，等离子体碰撞频率，等离子体厚度和太赫兹波频率与太赫兹波传播的关系。用激波管对0.22THz电磁波在等离子体中的传播特性进行了实验研究，实验结果与FDTD相吻合。 FDTD和实验结果均表明，使用太赫兹波通信是解决停电问题的另一种有效途径。

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