Engineering and Technology

Twisted moiré photonic crystal enabled optical vortex generation through bound states in the continuum

T. Zhang, K. Dong, et al.

This groundbreaking research by Tiancheng Zhang and colleagues uncovers a twist-enabled coupling mechanism in twisted bilayer photonic crystals that connects bound states in the continuum (BIC) modes to free space, paving the way for robust optical vortex generation—an exciting innovation for integrated optical information processing and optical tweezers.

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Abstract

This work identifies a twist-enabled coupling mechanism in twisted bilayer photonic crystals (TBPCs) that connects bound states in the continuum (BIC) modes to free space. This mechanism enables the generation of optical vortices with both odd and even topological orders. The robustness of vortex generation against geometric disturbances makes TBPCs a promising platform for controlled vortex generation, with potential applications in integrated optical information processing and optical tweezers.

Publisher

Nature Communications

Published On

Sep 27, 2023

Authors

Tiancheng Zhang, Kaichen Dong, Jiachen Li, Fanhao Meng, Jingang Li, Sai Munagavalasa, Costas P. Grigoropoulos, Junqiao Wu, Jie Yao

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