Moiré vector flat bands and the generation of wide-angle superchiral fields.

IF 3.3 2区物理与天体物理 Q2 OPTICS

Optics letters Pub Date : 2025-10-01 DOI:10.1364/OL.568672

Huizhen Zhang, Haoyu Qin, Weixuan Zhang, Xiangdong Zhang

引用次数: 0

Abstract

We propose a novel, to the best of our knowledge, approach for engineering vector flat bands-degenerate dispersionless bands supporting dual-polarization electromagnetic modes-through precision structural design of moiré photonic crystals. This platform enables the generation of highly uniform superchiral fields under wide-angle illumination, achieving field enhancements exceeding 100-fold compared to conventional circularly polarized light across a broad angular spectrum. This broadband angular tolerance eliminates the strict alignment requirements in chiral molecular detection systems, which may possess important applications in the field of ultrasensitive detection of molecular chirality.

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矢量平带与广角超手性场的产生。

我们提出了一种新颖的方法，据我们所知，工程矢量平坦带-支持双极化电磁模式的简并无色散带-通过精密结构设计的微波光子晶体。该平台能够在广角照明下产生高度均匀的超手性场，与传统圆偏振光相比，在宽角光谱下实现超过100倍的场增强。这种宽频角公差消除了手性分子检测系统中严格的对准要求，在分子手性超灵敏检测领域具有重要的应用价值。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optics letters 物理-光学

CiteScore

6.60

自引率

8.30%

发文量

2275

审稿时长

1.7 months

期刊介绍： The Optical Society (OSA) publishes high-quality, peer-reviewed articles in its portfolio of journals, which serve the full breadth of the optics and photonics community. Optics Letters offers rapid dissemination of new results in all areas of optics with short, original, peer-reviewed communications. Optics Letters covers the latest research in optical science, including optical measurements, optical components and devices, atmospheric optics, biomedical optics, Fourier optics, integrated optics, optical processing, optoelectronics, lasers, nonlinear optics, optical storage and holography, optical coherence, polarization, quantum electronics, ultrafast optical phenomena, photonic crystals, and fiber optics. Criteria used in determining acceptability of contributions include newsworthiness to a substantial part of the optics community and the effect of rapid publication on the research of others. This journal, published twice each month, is where readers look for the latest discoveries in optics.