eLight最新文献_第3页

Efficient microresonator frequency combs. 高效微谐振器频率梳

IF 27.2

eLight Pub Date : 2024-01-01 Epub Date: 2024-10-10 DOI: 10.1186/s43593-024-00075-5

Qi-Fan Yang, Yaowen Hu, Victor Torres-Company, Kerry Vahala

引用次数: 0

Waveguide-based augmented reality displays: perspectives and challenges 基于波导的增强现实显示器：前景与挑战

eLight Pub Date : 2023-12-07 DOI: 10.1186/s43593-023-00057-z

Yuqian Ding, Qian Yang, Yannanqi Li, Zhiyong Yang, Zhengyang Wang, Haowen Liang, Shin-Tson Wu

{"title":"Waveguide-based augmented reality displays: perspectives and challenges","authors":"Yuqian Ding, Qian Yang, Yannanqi Li, Zhiyong Yang, Zhengyang Wang, Haowen Liang, Shin-Tson Wu","doi":"10.1186/s43593-023-00057-z","DOIUrl":"https://doi.org/10.1186/s43593-023-00057-z","url":null,"abstract":"Augmented reality (AR) displays, as the next generation platform for spatial computing and digital twins, enable users to view digital images superimposed on real-world environment, fostering a deeper level of human-digital interactions. However, as a critical element in an AR system, optical combiners face unprecedented challenges to match the exceptional performance requirements of human vision system while keeping the headset ultracompact and lightweight. After decades of extensive device and material research efforts, and heavy investment in manufacturing technologies, several promising waveguide combiners have been developed. In this review paper, we focus on the perspectives and challenges of optical waveguide combiners for AR displays. We will begin by introducing the basic device structures and operation principles of different AR architectures, and then delve into different waveguide combiners, including geometric and diffractive waveguide combiners. Some commonly used in-couplers and out-couplers, such as prisms, mirrors, surface relief gratings, volume holographic gratings, polarization volume gratings, and metasurface-based couplers, will be discussed, and their properties analyzed in detail. Additionally, we will explore recent advances in waveguide combiner design and modeling, such as exit pupil expansion, wide field of view, geometric architectures of waveguide couplers, full-color propagation, and brightness and color uniformity optimization. Finally, we will discuss the bottlenecks and future development trends in waveguide combiner technologies. The objective of this review is to provide a comprehensive overview of the current state of waveguide combiner technologies, analyze their pros and cons, and then present the future challenges of AR displays.","PeriodicalId":72891,"journal":{"name":"eLight","volume":"108 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138548394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vectorial adaptive optics 矢量自适应光学

eLight Pub Date : 2023-11-27 DOI: 10.1186/s43593-023-00056-0

Chao He, Jacopo Antonello, Martin J. Booth

引用次数: 7

Highly efficient flexible structured metasurface by roll-to-roll printing for diurnal radiative cooling 高效柔性结构超表面，采用卷对卷印刷，全天候辐射冷却

eLight Pub Date : 2023-10-25 DOI: 10.1186/s43593-023-00053-3

Keng-Te Lin, Xianbo Nian, Ke Li, Jihong Han, Nan Zheng, Xiaokang Lu, Chunsheng Guo, Han Lin, Baohua Jia

{"title":"Highly efficient flexible structured metasurface by roll-to-roll printing for diurnal radiative cooling","authors":"Keng-Te Lin, Xianbo Nian, Ke Li, Jihong Han, Nan Zheng, Xiaokang Lu, Chunsheng Guo, Han Lin, Baohua Jia","doi":"10.1186/s43593-023-00053-3","DOIUrl":"https://doi.org/10.1186/s43593-023-00053-3","url":null,"abstract":"Abstract An ideal radiative cooler requires accurate spectral control capability to achieve efficient thermal emission in the atmospheric transparency window (8–13 μm), low solar absorption, good stability, scalability, and a simple structure for effective diurnal radiative cooling. Flexible cooling films made from polymer relying on polymer intrinsic absorbance represent a cost-effective solution but lack accuracy in spectral control. Here, we propose and demonstrate a metasurface concept enabled by periodically arranged three-dimensional (3D) trench-like structures in a thin layer of polymer for high-performance radiative cooling. The structured polymer metasurface radiative cooler is manufactured by a roll-to-roll printing method. It exhibits superior spectral breadth and selectivity, which offers outstanding omnidirectional absorption/emission (96.1%) in the atmospheric transparency window, low solar absorption (4.8%), and high stability. Impressive cooling power of 129.8 W m −2 and temperature deduction of 7 °C on a clear sky midday have been achieved, promising broad practical applications in energy saving and passive heat dispersion fields.","PeriodicalId":72891,"journal":{"name":"eLight","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134972776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Dual-band polarized upconversion photoluminescence enhanced by resonant dielectric metasurfaces 共振介质超表面增强双波段偏振上转换光致发光

eLight Pub Date : 2023-09-18 DOI: 10.1186/s43593-023-00054-2

Ziwei Feng, Tan Shi, Guangzhou Geng, Junjie Li, Zi-Lan Deng, Yuri Kivshar, Xiangping Li

{"title":"Dual-band polarized upconversion photoluminescence enhanced by resonant dielectric metasurfaces","authors":"Ziwei Feng, Tan Shi, Guangzhou Geng, Junjie Li, Zi-Lan Deng, Yuri Kivshar, Xiangping Li","doi":"10.1186/s43593-023-00054-2","DOIUrl":"https://doi.org/10.1186/s43593-023-00054-2","url":null,"abstract":"Abstract Lanthanide-doped upconversion nanoparticles emerged recently as an attractive material platform underpinning a broad range of innovative applications such as optical cryptography, luminescent probes, and lasing. However, the intricate 4f-associated electronic transition in upconversion nanoparticles leads only to a weak photoluminescence intensity and unpolarized emission, hindering many applications that demand ultrabright and polarized light sources. Here, we present an effective strategy for achieving ultrabright and dual-band polarized upconversion photoluminescence. We employ resonant dielectric metasurfaces supporting high-quality resonant modes at dual upconversion bands enabling two-order-of-magnitude amplification of upconversion emissions. We demonstrate that dual-band resonances can be selectively switched on polarization, endowing cross-polarization controlled upconversion luminescence with ultra-high degrees of polarization, reaching approximately 0.86 and 0.91 at dual emission wavelengths of 540 and 660 nm, respectively. Our strategy offers an effective approach for enhancing photon upconversion processes paving the way towards efficient low-threshold polarization upconversion lasers.","PeriodicalId":72891,"journal":{"name":"eLight","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135110686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

High-frequency terahertz waves disrupt Alzheimer’s β-amyloid fibril formation 高频太赫兹波破坏阿尔茨海默氏症β-淀粉样蛋白纤维的形成

eLight Pub Date : 2023-08-01 DOI: 10.1186/s43593-023-00048-0

Wenyu Peng, Zhi Zhu, Jing Lou, Kun Chen, Yuanming Wu, Chao Chang

引用次数: 4

Early cancer detection by serum biomolecular fingerprinting spectroscopy with machine learning 基于机器学习的血清生物分子指纹光谱早期癌症检测

eLight Pub Date : 2023-07-24 DOI: 10.1186/s43593-023-00051-5

Shilian Dong, Dong He, Qian Zhang, Chaoning Huang, Zhiheng Hu, Chenyang Zhang, L. Nie, Kun Wang, Weihua Luo, Jing Yu, Bin Tian, Wei Wu, Xu Chen, Fubing Wang, Jing Hu, Xiangheng Xiao

引用次数: 3

ISO-FLUCS: symmetrization of optofluidic manipulations in quasi-isothermal micro-environments ISO-FLUCS：准等温微环境中光流体操作的对称化

eLight Pub Date : 2023-07-18 DOI: 10.1186/s43593-023-00049-z

A. Minopoli, Susan Wagner, E. Erben, W. Liao, I. Stoev, E. Lauga, M. Kreysing

引用次数: 5

Polarization-based underwater geolocalization with deep learning 基于偏振的深度学习水下地理定位

eLight Pub Date : 2023-07-10 DOI: 10.1186/s43593-023-00050-6

Xiaoyang Bai, Zuodong Liang, Zhongmin Zhu, A. Schwing, David Forsyth, Viktor Gruev

引用次数: 5

Source-configured symmetry-broken hyperbolic polaritons 源配置对称破缺双曲极化

eLight Pub Date : 2023-06-07 DOI: 10.1186/s43593-023-00047-1

Caixing Hu, Tian Sun, Y. Zeng, Weiliang Ma, Z. Dai, Xiaosheng Yang, Xinliang Zhang, Peining Li

引用次数: 4