Realization of terahertz frequency selecting based on topological edge states with kagome photonic crystals

Hongxiang Zhang; Zhen Gu; Liming Si; Jun Ding

Results in Physics (Feb 2024)

Realization of terahertz frequency selecting based on topological edge states with kagome photonic crystals

Hongxiang Zhang,
Zhen Gu,
Liming Si,
Jun Ding

Affiliations

Hongxiang Zhang: Key Laboratory of Polar Materials and Devices, Department of Electronic Sciences, School of Physics and Electronic Sciences, East China Normal University, Shanghai 200241, China
Zhen Gu: Key Laboratory of Polar Materials and Devices, Department of Electronic Sciences, School of Physics and Electronic Sciences, East China Normal University, Shanghai 200241, China
Liming Si: Beijing Key Laboratory of Millimeter Wave and Terahertz Technology, School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing 100081, China; BIT Chongqing Institute of Microelectronics and Microsystems, Chongqing 400030, China; Corresponding authors at: School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing 100081, China (L. Si) and School of Physics and Electronic Sciences, East China Normal University, Shanghai 200241, China (J. Ding).
Jun Ding: Key Laboratory of Polar Materials and Devices, Department of Electronic Sciences, School of Physics and Electronic Sciences, East China Normal University, Shanghai 200241, China; Corresponding authors at: School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing 100081, China (L. Si) and School of Physics and Electronic Sciences, East China Normal University, Shanghai 200241, China (J. Ding).

Journal volume & issue: Vol. 57
p. 107399

Abstract

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Topological photonic insulators provide a novel approach to achieve high-efficiency terahertz transmissions due to the presence of the topological edge states. In this work, the frequency ranges of the topological edge states can be controlled by varying the radius of rods in the kagome lattice and the distance between them. In addition, a gap can be generated between two different frequency ranges and the frequency selecting functions can be realized by constructing different types of domains. Similarly, sandwich a non-trivial photonic crystal between two trivial ones also capable of frequency selection for its topological edge states. Our findings suggest that this work has significant potential for applications in photonic integrated devices.

Published in Results in Physics

ISSN: 2211-3797 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/results-in-physics/

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