基于单位尺度偏振复用超表面的鲁棒太赫兹偏振分析。

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.572982
Yu Wang, Jierong Cheng, Fei Fan, Shengjiang Chang
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引用次数: 0

摘要

在分子振动-旋转跃迁对应的太赫兹波段,极化编码了丰富的物质信息,使得极化分析对传感和成像至关重要。为了克服现有方法的局限性,包括对多组分的依赖,对非均匀性的敏感性以及复杂的极化信息提取过程,我们提出了一种新的方法,据我们所知,通过单极化复用元表面进行极化分析。通过将x-、y-、45-和左旋圆偏振独立聚焦到四个光斑上,通过校准的测量矩阵建立光斑强度与Stokes参数之间的线性映射。利用精确的琼斯矩阵工程和波长尺度的元原子偏振复用,可以精确地重建任意偏振态,并具有对光照不均匀性的弹性。该方法在太赫兹偏振分析和成像应用中具有重要的前景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Robust terahertz polarization analysis based on a unit-scale polarization-multiplexed metasurface.

In the terahertz band corresponding to molecular vibration-rotation transitions, polarization encodes rich material information, rendering polarization analysis crucial for sensing and imaging. To overcome limitations of existing methods, including reliance on multiple components, susceptibility to non-uniformity, and complex polarization information extraction processes, we propose a new method, to the best of our knowledge, for polarization analysis through a single polarization-multiplexed metasurface. By independently focusing x-, y-, 45-, and left-handed circular polarization into four spots, a linear mapping between the spot intensities and Stokes parameters is established via a calibrated measurement matrix. Leveraging precise Jones matrix engineering and wavelength-scale meta-atom polarization multiplexing, arbitrary polarization states are accurately reconstructed with resilience to illumination non-uniformity. This method holds significant promise for terahertz polarization analysis and imaging applications.

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来源期刊
Optics letters
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.
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