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Nonlinear effects in the Josephson-vortex terahertz photonic crystal: Second harmonic generation

机译:约瑟夫森涡旋太赫兹光子晶体中的非线性效应:二次谐波的产生

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摘要

This paper considers nonlinear effects on the propagation of Josephson plasma waves in the Josephson-vortex photonic crystal in layered superconductors with the possibility of exciting the second harmonic, tunable by magnetic field. This would enable an increase in the operable frequency of THz superconducting devices such as generators, detectors, and filters. We demonstrate numerically that the second harmonic can be strongly amplified for certain resonance frequencies. The linear spectrum for the second harmonic has also been analyzed, finding the possible resonance points with the first harmonic spectrum. An analytical approach describing a spatial distribution of the THz Josephson plasma waves at and near the resonances is also developed.
机译:本文考虑了对层状超导体中约瑟夫森涡旋光子晶体中约瑟夫森等离子体波传播的非线性影响,并有可能激发通过磁场可调谐的二次谐波。这样可以提高太赫兹超导设备(例如发电机,检测器和滤波器)的工作频率。我们通过数值证明,对于某些谐振频率,二次谐波可以被强烈放大。还分析了二次谐波的线性频谱,找到了与一次谐波频谱可能的共振点。还开发了一种描述太赫兹约瑟夫森等离子波在共振点及其附近的空间分布的分析方法。

著录项

  • 来源
    《Physical review》 |2012年第21期|p.214521.1-214521.8|共8页
  • 作者

    A. Wall-Clarke; S. Savelev;

  • 作者单位

    Department of Physics, Loughborough University, Loughborough LE11 3TU, United Kingdom;

    Department of Physics, Loughborough University, Loughborough LE11 3TU, United Kingdom;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    photonic bandgap materials;

    机译:光子带隙材料;

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