Work

Topological valley-locked waveguide transport in opto-heterostructures

Year: 2025

Type: article

Abstract: In this paper, an opto-heterostructure based on light-responsive liquid crystal elastomers (LCEs) is presented to realize topological valley-locked waveguide transport. First, the opto-deformation mode of the LCE gear-like cell is investigated. Then, the effects of light intensity and geometric parameters on degeneracy in the dispersion relation and the topological valley Hall phase transition are clarified. The existence of topological valley-locked waveguide states (TVWSs) in the heterostructures is theoretically analyzed and numerically simulated, and their robustness under varying conditions is verified. Finally, design schemes for high-throughput beam splitters and topological energy concentrators are proposed, and optically selective waveguides are implemented through the adjustment of the light intensity. The results illustrate that flexible control on the waveguide path and frequency selection is achieved through tuning the illumination pattern and the light intensity, which provide a new strategy for the design of TVWS opto-metamaterials.

Source: Journal of Applied Physics

DOI: 10.1063/5.0245316

Authors: Tianshu Liang, Ying Liu

Institution: Beijing Jiaotong University

Language: English

Topic: Topological Materials and Phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,500

Funders: National Natural Science Foundation of China, Fundamental Research Funds for the Central Universities