PhotoniX

姓名
邮箱
手机号码
标题
留言内容
验证码

期刊信息更多+

主办单位：
中国光学工程学会清华大学上海理工大学
名誉主编： 庄松林院士
国际主编： 顾敏院士
主编：
孙洪波教授仇旻教授
创刊：2020年3月
ISSN：2662-1991

新闻资讯更多+

最新上线

Metasurface enabled broadband, high numerical aperture Laplace differentiator under multiple polarization illumination

Chen Zhou, Naseer Muhammad, Ruizhe Zhao, Yanjie Chen, Guangzhou Geng, Junjie Li, Xiaowei Li, Xin Li, Yongtian Wang, Lingling Huang

doi: 10.1186/s43074-025-00168-5

Abstract(0) PDF(0)

Abstract:
Optical metasurfaces to perform optical analog spatial differentiation operations and image edge detection processing is a currently hot topic. However, some metasurface differentiators are limited by polarization dependence, narrow operating bandwidth, low numerical aperture (NA), requiring for additional polarization elements or digital processing, and under coherent light illumination conditions. Here, we use the optical angular dispersion effect based on resonant dielectric metasurface, to realize the Laplacian differential operation in the real space directly, which can address these critical metrics for p- and s-polarized light. Moreover, the broadband operating range of the metasurface differentiator can be obtained by exciting and detuning the electric toroidal dipole (ETD) and magnetic toroidal dipole (MTD) resonances. We experimentally demonstrate that azimuthal-insensitive Laplace differential operations and dual-polarization second-order two-dimensional edge detection with NA up to 0.64 and spectral bandwidths of nearly 100 nm from 750 to 850 nm. In addition, broadband incoherent and unpolarized edge detection experiments are also carried out with satisfactory performance. Our work will pave the way for free-space realization of high-efficiency, broadband parallel optical-computation and image-processing in machine-vision, biomedical, and optical microscopy.

Three-dimensional varifocal meta-device for augmented reality display

Yuzhou Song, Jiaqi Yuan, Qinmiao Chen, Xiaoyuan Liu, Yin Zhou, Jialuo Cheng, Shumin Xiao, Mu Ku Chen, Zihan Geng

doi: 10.1186/s43074-025-00164-9

Abstract(66) PDF(1)

Abstract:
Augmented reality (AR) displays have gained significant attention for their ability to blend the real and virtual worlds seamlessly. However, they face challenges like the vergence-accommodation conflict and a limited eyebox. The AR community is actively seeking lightweight, integrative optical elements to overcome these limitations. In this study, we demonstrate a three-dimensional varifocal meta-device for AR display. The meta-device is composed of three cascaded metasurfaces with Moiré and off-center Fresnel lens phase profiles designed to dynamically manipulate the focus point in three-dimensional space. The cascaded metasurfaces are designed and fabricated by the TiO₂ nanopillars with varying diameters, which are polarizationinsensitive for light field manipulation. The focal point position is precisely controlled by the relative rotation between the metasurfaces. The meta-device achieves an effective focal length ranging from 3.7 mm to 33.2 mm and can adjust the lateral focal point within the same range. The dynamic eyebox size varies from 4.2 mm to 5.8 mm. This lightweight, integrated meta-device is well-suited for various imaging applications, including AR displays, as it simultaneously addresses the vergence-accommodation conflict and expands the eyebox.

Non-local metasurface generates highly efficient transmission vortex by intrinsic singularity and generalized kerker effect

Hang Xu, Jingguang Chen, Bo Wang, Hui Li, Chunyu Song, Qi Tan, Zhengyi Zhao, Wenzhe Liu, Lei Shi, Jie Li, Jianquan Yao

doi: 10.1186/s43074-025-00166-7

Abstract(12) PDF(2)

Abstract:
In response to the growing demands of advanced 5G/6G communication technologies, millimeter-wave vortex beams have emerged as a promising solution to increase channel capacities. This paper introduces a novel and efficient method for vortex beam generation by leveraging the intrinsic singularities of dipole scatterers and enhancing their performance through non-local coupling. We demonstrate that the intrinsic singularities—amplitude-zero points in the scattering patterns of electric dipole (ED) and magnetic dipole (MD) resonances–enable the conversion of spin angular momentum (SAM) into orbital angular momentum (OAM), generating a vortex electric field distribution. By arranging these dipolar units into a periodic array, we establish a dual-resonance non-local metasurface that improves directivity and efficiency via non-local collective interactions and the generalized Kerker effect. This configuration significantly enhances forward scattering, producing highly directional vortex beams. Our experimental results show that the non-local metasurface achieves a vortex conversion efficiency approximately 2.2 times higher than that of a reference structure around 40 GHz. This alignment-free, high-efficiency solution offers great potential for expanding millimeter-wave communication capacity and advancing photonic applications.

Suppression of local decay rate through energy quantum confinement effect in non-Markovian waveguide QED

Yuan Liu, Hong-Bo Sun, Linhan Lin

doi: 10.1186/s43074-025-00167-6

Abstract(8) PDF(0)

Abstract:
Waveguide quantum electrodynamics (QED) system manifests an ideal platform for studying many‑body physics. When multiple emitters are coupled to a common waveguide, subradiant states may arise because of the waveguide‑mediated interaction, leading to a long lifetime because of their immunity to the waveguide modeinduced dissipation. However, they can still be influenced by local environments, which are incoherent for different emitters and cannot be canceled out through interference. Herein, a new mechanism termed energy quantum confinement effect (EQCE) is proposed in a non‑Markovian waveguide QED system to suppress the local dissipation. The energy quantum is confined in the waveguide by emitters, suppressing spontaneous decay of the emitters. The EQCE makes the system partly free from local dissipation of emitters, leading to a total decay rate lower than the local decay rate. We further show that similar effect occurs spontaneously by self‑interference and can be stressed by cooperative coupling, relaxing the requirement for initializing the emitters into a remotely entangled state.

引用排行

Recent advances in multi-dimensional metasurfaces holographic technologies

Ruizhe Zhao, Lingling Huang, Yongtian Wang

2020, 1(1). doi: 10.1186/s43074-020-00020-y

PDF(64)

Terahertz spectroscopy in biomedical field: a review on signal-to-noise ratio improvement

Yan Peng, Chenjun Shi, Yiming Zhu, Min Gu, Songlin Zhuang

2020, 1(1). doi: 10.1186/s43074-020-00011-z

PDF(37)

Information Metamaterials: bridging the physical world and digital world

Qian Ma, Tie Jun Cui

2020, 1(1). doi: 10.1186/s43074-020-00006-w

PDF(63)

Vacuum-ultraviolet photodetectors

Lemin Jia, Wei Zheng, Feng Huang

2020, 1(1). doi: 10.1186/s43074-020-00022-w

PDF(35)

推荐论文更多+

下载排行更多+

留言板

Feature Article | 新型多功能超透镜助力AR显示集成化

前沿：全光纤单光子探测器

前沿：MXene传感器研究进展—从传统的生物、化学、物理传感器到智能、仿生设备的应用

前沿：基于宽视场光谱巡天望远镜（MUST）的光学系统概念设计

稳步发展！PhotoniX 2022年最新IF公布!

前沿：深度学习助力全景并行相机实现计算变焦成像

前沿：深度学习助力无序光子结构实现光场探测新范式

photonix.springeropen.com