Topological Phase Transition by Tuning Central Unit in C₃ Symmetric Lattice of Terahertz Photonic Crystals

A terahertz band-switchable photonic topological insulator (PTI) composed of a C₃-symmetric rod-type photonic crystal is designed. By tuning the size of the central cylinder in the lattice, a topological phase transition can occur in the PTI, and the topological nontrivial bandgap can be...

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Autors principals:	Zhigang Yan, Kangrong Deng, Shuangjie Song, Tingting Liu, Jinhui Cai, Le Zhang, Bo Fang
Format:	Artigo
Idioma:	Inglês
Publicat:	MDPI AG 2025-11-01
Col·lecció:	Photonics
Matèries:	topological photonics terahertz waveguide resonant cavity photonic crystal
Accés en línia:	https://www.mdpi.com/2304-6732/12/11/1143
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