Enhancement of the Electric Field and Diminishment of the Group Velocity of Light in Dielectric Multilayer Systems: A General Description
Enhancement of the Electric Field and Diminishment of the Group Velocity of Light in Dielectric Multilayer Systems: A General Description
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DOI：
10.1103/physrevapplied.10.064015
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发表时间：
2018-12
影响因子：
4.6
通讯作者：
J. Blumberg;M. S. Ukhtary;R. Saito
中科院分区：
文献类型：
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作者：
J. Blumberg;M. S. Ukhtary;R. Saito
我们提出的传输矩阵方法的“总电荷”和“累积电荷”的函数的光传播通过多层介质的解析公式。我们重新定义了Liu等人提出的总电荷的概念。[J.物理学。康登斯。所谓了29，455303（2017）]，并且新定义了累积电荷以解析地确定多层内的电场的大小。此外，我们推导了光在每一层中的群速度的解析表达式。这项工作的目的是预测哪种序列将提供最强的多层内的电场放大，以及找到序列，使最低的群速度。我们发现，对称交替序列给出了最好的电场放大和最低的平均群速度与其他序列相比。
We present analytical formulae for light propagation through a multilayer of dielectric media as a function of the “total charge” and the “accumulated charge” that we propose by the transfer-matrix method. We redefine the concept of the total charge introduced by Liuet al.[J. Phys. Condens. Matter. 29, 455303 (2017)] and newly define the accumulated charge to determine the magnitude of electric field inside the multilayers analytically. In addition, we derive an analytical expression for the group velocity of light in each layer. The purpose of this work is to predict which kind of sequence would provide the strongest amplification of the electric field inside the multilayer as well as to find the sequence that gives the lowest group velocity. We find that the symmetric alternating sequence gives the best amplification of the electric field and the lowest mean group velocity compared with the other sequences.