光子晶体带折叠的多带拓扑态

IF 1.1 4区物理与天体物理 Q4 NANOSCIENCE & NANOTECHNOLOGY

Journal of Nanophotonics Pub Date : 2023-09-15 DOI:10.1117/1.jnp.17.036014

Fan Bu, Yun-Tuan Fang

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引用次数: 0

摘要

为了寻找更简单和通用的方法来实现拓扑光子晶体(PCs)，我们利用了PCs波段的折叠效应和Su-Schrieffer-Heeger模型。通过改变结构参数，晶格可以从拓扑平凡状态转变为非平凡状态。带的折叠效应导致了多个拓扑边缘带，从而增加了拓扑态的带宽。此外，所设计的结构可以形成拓扑角态。

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Multiband topological states from band fold of photonic crystals

To find more simple and universal method to realize the topological photonic crystals (PCs), we use the fold effect of bands of PCs and the Su–Schrieffer–Heeger model. Through the change of structure parameters, a lattice can undergo the transformation from topologically trivial to nontrivial states. The fold effect of bands leads to the multiple topological edge bands, which increase the band width of topological states. Furthermore, the topological corner states can be formed in the designed structure.

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来源期刊

Journal of Nanophotonics 工程技术-光学

CiteScore

2.60

自引率

6.70%

发文量

审稿时长

3 months

期刊介绍： The Journal of Nanophotonics publishes peer-reviewed papers focusing on the fabrication and application of nanostructures that facilitate the generation, propagation, manipulation, and detection of light from the infrared to the ultraviolet regimes.