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arXiv · 2412.13513

Uncovering the Maximum Chirality in Dielectric Nanostructures

WenKui Zhao·ShengYi Wang·HanZhuo Kuang·Hao Luo·Qiu Wang·Bo-Wen Jia
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Abstract

Maximum structural chirality refers to the highest selectivity for circularly polarized light (CPL) in nanostructures, often manifested as maximum circular dichroism (CD), optical rotation (OR), and spin-orbit coupling (SOC). However, the underlying physical mechanisms that lead to maximum chirality remain unclear. In this work, we demonstrate that maximum chirality in dielectric nanostructures arises from the constructive and destructive interference of multipole moments with different CPL. By employing generalized multipole decomposition, we introduce a generalized chiral multipole mechanism that allows for direct numerical calculation of CD and establishes the conditions required to achieve maximum chirality. This approach provides a comprehensive framework for analyzing chirality and serves as a foundation for future investigations of chiral nanostructures.

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WenKui Zhao, ShengYi Wang, HanZhuo Kuang, Hao Luo, Qiu Wang, Bo-Wen Jia. 2024-12-18. Uncovering the Maximum Chirality in Dielectric Nanostructures. https://arxiv.org/abs/2412.13513

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