دورية أكاديمية

Cylindrical vector beam multiplexing holography employing spin-decoupled phase modulation metasurface

التفاصيل البيبلوغرافية
العنوان: Cylindrical vector beam multiplexing holography employing spin-decoupled phase modulation metasurface
المؤلفون: Xie Zhiqiang, Liang Zeming, Wu Haisheng, Zeng Qingji, Guan Zhiwei, Long Aofan, Zhong Pin, Liu Junmin, Ye Huapeng, Fan Dianyuan, Chen Shuqing
المصدر: Nanophotonics, Vol 13, Iss 4, Pp 529-538 (2024)
بيانات النشر: De Gruyter, 2024.
سنة النشر: 2024
المجموعة: LCC:Physics
مصطلحات موضوعية: multiplexing holography, cylindrical vector beams, spin-decoupled phase modulation, metasurface, Physics, QC1-999
الوصف: Cylindrical vector beams (CVBs) hold considerable promise as high-capacity information carriers for multiplexing holography due to their mode orthogonality. In CVB holography, phase holograms are encoded onto the wave-front of CVBs with different mode orders while preserving their independence during reconstruction. However, a major challenge lies in the limited ability to manipulate the spatial phase and polarization distribution of CVBs independently. To address this challenge, we propose a spin-decoupled phase modulation strategy by leveraging the propagation and geometric phase of composite phase metasurfaces. By exploiting the polarized Poincaré sphere, we show that CVBs can be decomposed into two circularly polarized components with orthogonal polarization states and conjugate phase distributions. This decomposition enables independent control of the phase and polarization distributions of CVBs by modulating the initial phase and phase difference of these two components. Consequently, two holograms with discrete spatial frequency distributions that carry opposite helical phases are encoded to modulate the wave-front of CVBs by the metasurface consisting of Si nanopillars. This allows for us to achieve successful four-channel CVB multiplexing holography. Benefiting from the non-dispersive nature of geometric phase, this metasurface exhibits a broad operating band spanning the entire visible light spectrum (443 nm–633 nm). These suggest that our proposed method offers comprehensive control over the spatial phase and polarization of CVBs, thereby holding significant potential for advancing their application in holography.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2192-8614
Relation: https://doaj.org/toc/2192-8614
DOI: 10.1515/nanoph-2023-0731
URL الوصول: https://doaj.org/article/0b11918ef81d4db283d020358e5a7be0
رقم الأكسشن: edsdoj.0b11918ef81d4db283d020358e5a7be0
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:21928614
DOI:10.1515/nanoph-2023-0731