热高密度等离子体板的瞬逝wave interference和总透明度
Evanescent wave interference and the total transparency of a warm high-density plasma slab
摘要：
结果表明，超临界密度等离子体平板对\textit{p}极化的斜入射电磁波是完全透明的。由于在亚临界区域中的倏逝波的干涉，实现了高透明度。由于等离子体表面模（等离子体极化激元）的激发，透射系数具有共振特性。两个倏逝波之间存在一定的相位差是通过非透明区提供非零能流的关键。所需的相移是在精确的谐振处获得的，并且对应于绝对透明度。在温暖的等离子体的情况下，传播的纵向（静电）模式的激发成为可能。我们表明，这些纵向激发有利于总的不透明的等离子体板的透明度，创造额外的共振系统的传输特性。
英文摘要：
It is shown that an overcritical density plasma slab can be totally transparent to a \textit{p}-polarized obliquely incident electromagnetic wave. High transparency is achieved due to the interference of the evanescent waves in the subcritical region. The transmission coefficient has the resonant character due to the excitation of a plasma surface mode (plasmon-polariton). It is crucial that two evanescent waves have certain phase shift to provide non-zero energy flux through non-transparent region. The required phase shift is obtained at the exact resonance and corresponds to the absolute transparency. In a warm plasma case, the excitation of the propagating longitudinal (electrostatic) modes becomes possible. We demonstrate that these longitudinal excitations facilitate the total transparency of an opaque plasma slab creating additional resonances in the transmission property of the system.
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