论文标题
双浮子床单中的地表波耦合，支撑分阶段的颞木异常
Surface-Wave Coupling in Double Floquet Sheets Supporting Phased Temporal Wood Anomalies
论文作者
论文摘要
我们研究了对称性选择的表面模式激发在一般定期时间调节的双层系统中，其中两层的调制具有恒定的相位差。通过得出带有周期性时间调整的drude散光双层结构的半分析式矩阵形式主义，我们计算了散射幅度和相应的透射系数。我们的结果表明，两张纸的调制之间的相差在显着增强并有选择地激发具有高效率的平均或奇数表面模式方面起着至关重要的作用。我们通过全波时间域模拟来验证我们的计算，表明即使在单个非谐振高斯脉冲的照明下，也可以通过控制两种模式之间的相位差异来实现两个不同模态盘的表面波激发之间的有效切换。我们的结果为超快，对称选择模式激发和通过时间调制切换铺平了道路。
We investigate symmetry-selective surface-mode excitation in a general periodically time-modulated double-layer system, where the modulation of the two layers has a constant phase difference. By deriving a semi-analytic trans-fer matrix formalism of a Drude-dispersive double-layer structure with periodic time-modulation, we calculate the scattering amplitudes and the corresponding transmission coefficient. Our results show that the phase-difference between the modulation of the two sheets plays an essential role in significantly enhancing and selectively exciting either the even or odd surface mode with high efficiency. We verify our calculations with full-wave time-domain simulations, showing that efficient switching between the surface-wave excitation of the two distinct modal chan-nels can be achieved, even under illumination from a single off-resonant Gaussian pulse, by controlling the phase difference between the two modulations. Our results pave the way towards ultrafast, symmetry-selective mode excitation and switching via temporal modulation.
