Li Liang, Hao Haoyue
School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zibo, 255000, China.
Sci Rep. 2022 Sep 2;12(1):14921. doi: 10.1038/s41598-022-19435-7.
We put forward the concept of high-order Tamm plasmon (TP) modes which are illustrated with a simple metal-Bragg mirror cavity. Results show series orders of TP modes are gradually generated through adjusting the thickness of the cavity, for which traditional TP modes only corresponds to the zero-order modes. The reflectance spectra and electric field distributions are compared to demonstrate the consistency of these series of TP modes. Meanwhile, the excitation intensity of different order TP modes are studied. Results show that the excitation intensity is related directly to the TP mode wavelength, and has no relation to the order number. These results might provide new ideas to the study of TP modes and guide the design and optimization of TP based devices.
我们提出了高阶塔姆等离子体激元（TP）模式的概念，并用一个简单的金属-布拉格镜腔进行了说明。结果表明，通过调整腔的厚度逐渐产生了一系列的TP模式阶次，而传统的TP模式仅对应于零阶模式。比较了反射光谱和电场分布以证明这一系列TP模式的一致性。同时，研究了不同阶次TP模式的激发强度。结果表明，激发强度与TP模式波长直接相关，与阶次无关。这些结果可能为TP模式的研究提供新思路，并指导基于TP的器件的设计和优化。
