论文标题
通过索引增强的等离子体 - 动物脉
Ultra-large actively tunable photonic band gaps via plasmon-analog of index enhancement
论文作者
论文摘要
我们提出了一种新颖的方法，用于对带隙进行积极连续调整，该方法具有彻底改变当前光子技术的巨大潜力。我们研究X和Y与Y型纳米棒二聚体的周期性结构。 Y极化探针脉冲的折射率可以通过X偏振辅助（泵）脉冲的强度连续调节。使用折射率增强的等离子体 - 动物帮助的是，可以通过消失的损失来实现数量级索引调整[Phys。 Rev. B 100，075427（2019）]。因此，可以通过辅助脉冲从不存在的缝隙中创建大带隙。我们还使用Maxwell方程的数值解提供了现象的“原理证明”。适用于任何晶体尺寸的新方法也可以用作在数十秒秒处运行的线性光子开关。
We present a novel method for active continuous-tuning of a band gap which has a great potential to revolutionize current photonic technologies. We study a periodic structure of x and y-aligned nanorod dimers. Refractive index of a y-polarized probe pulse can be continuously-tuned by the intensity of an x-polarized auxiliary (pump) pulse. Order of magnitude index-tuning can be achieved with a vanishing loss using the plasmon-analog of refractive index enhancement [Phys. Rev. B 100, 075427 (2019)]. Thus, a large band gap can be created from a non-existing gap via the auxiliary pulse. We also present a "proof of principle" demonstration of the phenomenon using numerical solutions of Maxwell equations. The new method, working for any crystal dimensions, can also be utilized as a linear photonic switch operating at tens of femtoseconds.
