Light, science & applications最新文献_第4页

Light People: Prof. Juejun Hu, exploring the light. 光的人胡珏君教授，探索光明。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-08-27 DOI: 10.1038/s41377-024-01583-2

Tingting Sun

引用次数: 0

Phase preservation of orbital angular momentum of light in multiple scattering environment. 多重散射环境中光轨道角动量的相位保持。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-08-26 DOI: 10.1038/s41377-024-01562-7

Igor Meglinski, Ivan Lopushenko, Anton Sdobnov, Alexander Bykov

{"title":"Phase preservation of orbital angular momentum of light in multiple scattering environment.","authors":"Igor Meglinski, Ivan Lopushenko, Anton Sdobnov, Alexander Bykov","doi":"10.1038/s41377-024-01562-7","DOIUrl":"10.1038/s41377-024-01562-7","url":null,"abstract":"Recent advancements in wavefront shaping techniques have facilitated the study of complex structured light's propagation with orbital angular momentum (OAM) within various media. The introduction of spiral phase modulation to the Laguerre-Gaussian (LG) beam during its paraxial propagation is facilitated by the negative gradient of the medium's refractive index change over time, leading to a notable increase in the rate of phase twist, effectively observed as phase retardation of the OAM. This approach attains remarkable sensitivity to even the slightest variations in the medium's refractive index (∼10-6). The phase memory of OAM is revealed as the ability of twisted light to preserve the initial helical phase even propagating through the turbid tissue-like multiple scattering medium. The results confirm fascinating opportunities for exploiting OAM light in biomedical applications, e.g. such as non-invasive trans-cutaneous glucose diagnosis and optical communication through biological tissues and other optically dense media.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"13 1","pages":"214"},"PeriodicalIF":19.4,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11347564/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142073216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultra-broadband diffractive imaging with unknown probe spectrum. 利用未知探针光谱进行超宽带衍射成像。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-08-26 DOI: 10.1038/s41377-024-01581-4

Chuangchuang Chen, Honggang Gu, Shiyuan Liu

{"title":"Ultra-broadband diffractive imaging with unknown probe spectrum.","authors":"Chuangchuang Chen, Honggang Gu, Shiyuan Liu","doi":"10.1038/s41377-024-01581-4","DOIUrl":"10.1038/s41377-024-01581-4","url":null,"abstract":"Strict requirement of a coherent spectrum in coherent diffractive imaging (CDI) architectures poses a significant obstacle to achieving efficient photon utilization across the full spectrum. To date, nearly all broadband computational imaging experiments have relied on accurate spectroscopic measurements, as broad spectra are incompatible with conventional CDI systems. This paper presents an advanced approach to broaden the scope of CDI to ultra-broadband illumination with unknown probe spectrum, effectively addresses the key challenges encountered by existing state-of-the-art broadband diffractive imaging frameworks. This advancement eliminates the necessity for prior knowledge of probe spectrum and relaxes constraints on non-dispersive samples, resulting in a significant extension in spectral bandwidth, achieving a nearly fourfold improvement in bandlimit compared to the existing benchmark. Our method not only monochromatizes a broadband diffraction pattern from unknown illumination spectrum, but also determines the compressive sampled profile of spectrum of the diffracted radiation. This superiority is experimentally validated using both CDI and ptychography techniques on an ultra-broadband supercontinuum with relative bandwidth exceeding 40%, revealing a significantly enhanced coherence and improved reconstruction with high fidelity under ultra-broadband illumination.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"13 1","pages":"213"},"PeriodicalIF":19.4,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11347606/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142073217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exciton-harvesting enabled efficient charged particle detection in zero-dimensional halides. 利用激子捕获技术实现了零维卤化物中带电粒子的高效检测。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-08-14 DOI: 10.1038/s41377-024-01532-z

Qian Wang, Chenger Wang, Hongliang Shi, Jie Chen, Junye Yang, Alena Beitlerova, Romana Kucerkova, Zhengyang Zhou, Yunyun Li, Martin Nikl, Xilei Sun, Xiaoping OuYang, Yuntao Wu

{"title":"Exciton-harvesting enabled efficient charged particle detection in zero-dimensional halides.","authors":"Qian Wang, Chenger Wang, Hongliang Shi, Jie Chen, Junye Yang, Alena Beitlerova, Romana Kucerkova, Zhengyang Zhou, Yunyun Li, Martin Nikl, Xilei Sun, Xiaoping OuYang, Yuntao Wu","doi":"10.1038/s41377-024-01532-z","DOIUrl":"10.1038/s41377-024-01532-z","url":null,"abstract":"Materials for radiation detection are critically important and urgently demanded in diverse fields, starting from fundamental scientific research to medical diagnostics, homeland security, and environmental monitoring. Low-dimensional halides (LDHs) exhibiting efficient self-trapped exciton (STE) emission with high photoluminescence quantum yield (PLQY) have recently shown a great potential as scintillators. However, an overlooked issue of exciton-exciton interaction in LDHs under ionizing radiation hinders the broadening of its radiation detection applications. Here, we demonstrate an exceptional enhancement of exciton-harvesting efficiency in zero-dimensional (0D) Cs3Cu2I5:Tl halide single crystals by forming strongly localized Tl-bound excitons. Because of the suppression of non-radiative exciton-exciton interaction, an excellent α/β pulse-shape-discrimination (PSD) figure-of-merit (FoM) factor of 2.64, a superior rejection ratio of 10-9, and a high scintillation yield of 26 000 photons MeV-1 under 5.49 MeV α-ray are achieved in Cs3Cu2I5:Tl single crystals, outperforming the commercial ZnS:Ag/PVT composites for charged particle detection applications. Furthermore, a radiation detector prototype based on Cs3Cu2I5:Tl single crystal demonstrates the capability of identifying radioactive 220Rn gas for environmental radiation monitoring applications. We believe that the exciton-harvesting strategy proposed here can greatly boost the applications of LDHs materials.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"13 1","pages":"190"},"PeriodicalIF":19.4,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11322634/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141976097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Learnable digital signal processing: a new benchmark of linearity compensation for optical fiber communications. 可学习的数字信号处理：光纤通信线性补偿的新基准。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-08-13 DOI: 10.1038/s41377-024-01556-5

Zekun Niu, Hang Yang, Lyu Li, Minghui Shi, Guozhi Xu, Weisheng Hu, Lilin Yi

{"title":"Learnable digital signal processing: a new benchmark of linearity compensation for optical fiber communications.","authors":"Zekun Niu, Hang Yang, Lyu Li, Minghui Shi, Guozhi Xu, Weisheng Hu, Lilin Yi","doi":"10.1038/s41377-024-01556-5","DOIUrl":"10.1038/s41377-024-01556-5","url":null,"abstract":"The surge in interest regarding the next generation of optical fiber transmission has stimulated the development of digital signal processing (DSP) schemes that are highly cost-effective with both high performance and low complexity. As benchmarks for nonlinear compensation methods, however, traditional DSP designed with block-by-block modules for linear compensations, could exhibit residual linear effects after compensation, limiting the nonlinear compensation performance. Here we propose a high-efficient design thought for DSP based on the learnable perspectivity, called learnable DSP (LDSP). LDSP reuses the traditional DSP modules, regarding the whole DSP as a deep learning framework and optimizing the DSP parameters adaptively based on backpropagation algorithm from a global scale. This method not only establishes new standards in linear DSP performance but also serves as a critical benchmark for nonlinear DSP designs. In comparison to traditional DSP with hyperparameter optimization, a notable enhancement of approximately 1.21 dB in the Q factor for 400 Gb/s signal after 1600 km fiber transmission is experimentally demonstrated by combining LDSP and perturbation-based nonlinear compensation algorithm. Benefiting from the learnable model, LDSP can learn the best configuration adaptively with low complexity, reducing dependence on initial parameters. The proposed approach implements a symbol-rate DSP with a small bit error rate (BER) cost in exchange for a 48% complexity reduction compared to the conventional 2 samples/symbol processing. We believe that LDSP represents a new and highly efficient paradigm for DSP design, which is poised to attract considerable attention across various domains of optical communications.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"13 1","pages":"188"},"PeriodicalIF":19.4,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11319808/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141971416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Author Correction: Strong nonlinear optical processes with extraordinary polarization anisotropy in inversion-symmetry broken two-dimensional PdPSe. 作者更正：反转对称破碎的二维 PdPSe 中具有超常偏振各向异性的强非线性光学过程。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-08-12 DOI: 10.1038/s41377-024-01522-1

Song Zhu, Ruihuan Duan, Xiaodong Xu, Fangyuan Sun, Wenduo Chen, Fakun Wang, Siyuan Li, Ming Ye, Xin Zhou, Jinluo Cheng, Yao Wu, Houkun Liang, Junichiro Kono, Xingji Li, Zheng Liu, Qi Jie Wang

引用次数: 0

Breaking the in-coupling efficiency limit in waveguide-based AR displays with polarization volume gratings. 利用偏振体光栅打破基于波导的 AR 显示屏的内耦合效率限制。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-08-12 DOI: 10.1038/s41377-024-01537-8

Yuqiang Ding, Yuchen Gu, Qian Yang, Zhiyong Yang, Yuge Huang, Yishi Weng, Yuning Zhang, Shin-Tson Wu

{"title":"Breaking the in-coupling efficiency limit in waveguide-based AR displays with polarization volume gratings.","authors":"Yuqiang Ding, Yuchen Gu, Qian Yang, Zhiyong Yang, Yuge Huang, Yishi Weng, Yuning Zhang, Shin-Tson Wu","doi":"10.1038/s41377-024-01537-8","DOIUrl":"10.1038/s41377-024-01537-8","url":null,"abstract":"Augmented reality (AR) displays, heralded as the next-generation platform for spatial computing, metaverse, and digital twins, empower users to perceive digital images overlaid with real-world environment, fostering a deeper level of human-digital interactions. With the rapid evolution of couplers, waveguide-based AR displays have streamlined the entire system, boasting a slim form factor and high optical performance. However, challenges persist in the waveguide combiner, including low optical efficiency and poor image uniformity, significantly hindering the long-term usage and user experience. In this paper, we first analyze the root causes of the low optical efficiency and poor uniformity in waveguide-based AR displays. We then discover and elucidate an anomalous polarization conversion phenomenon inherent to polarization volume gratings (PVGs) when the incident light direction does not satisfy the Bragg condition. This new property is effectively leveraged to circumvent the tradeoff between in-coupling efficiency and eyebox uniformity. Through feasibility demonstration experiments, we measure the light leakage in multiple PVGs with varying thicknesses using a laser source and a liquid-crystal-on-silicon light engine. The experiment corroborates the polarization conversion phenomenon, and the results align with simulation well. To explore the potential of such a polarization conversion phenomenon further, we design and simulate a waveguide display with a 50° field of view. Through achieving first-order polarization conversion in a PVG, the in-coupling efficiency and uniformity are improved by 2 times and 2.3 times, respectively, compared to conventional couplers. This groundbreaking discovery holds immense potential for revolutionizing next-generation waveguide-based AR displays, promising a higher efficiency and superior image uniformity.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"13 1","pages":"185"},"PeriodicalIF":19.4,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11317523/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141917028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Meta Shack-Hartmann wavefront sensor with large sampling density and large angular field of view: phase imaging of complex objects. 具有大采样密度和大角度视场的 Meta Shack-Hartmann 波前传感器：复杂物体的相位成像。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-08-12 DOI: 10.1038/s41377-024-01528-9

Gi-Hyun Go, Dong-Gu Lee, Jaeyeon Oh, Gookho Song, Doeon Lee, Mooseok Jang

{"title":"Meta Shack-Hartmann wavefront sensor with large sampling density and large angular field of view: phase imaging of complex objects.","authors":"Gi-Hyun Go, Dong-Gu Lee, Jaeyeon Oh, Gookho Song, Doeon Lee, Mooseok Jang","doi":"10.1038/s41377-024-01528-9","DOIUrl":"10.1038/s41377-024-01528-9","url":null,"abstract":"Shack-Hartmann wavefront sensors measure the local slopes of an incoming wavefront based on the displacement of focal spots created by a lenslet array, serving as key components for adaptive optics for astronomical and biomedical imaging. Traditionally, the challenges in increasing the density and the curvature of the lenslet have limited the use of such wavefront sensors in characterizing slowly varying wavefront structures. Here, we develop a metasurface-enhanced Shack-Hartmann wavefront sensor (meta SHWFS) to break this limit, considering the interplay between the lenslet parameters and the performance of SHWFS. We experimentally validate the meta SHWFS with a sampling density of 5963 per mm2 and a maximum acceptance angle of 8° which outperforms the traditional SFWFS by an order of magnitude. Furthermore, to the best of our knowledge, we demonstrate the first use of a wavefront sensing scheme in single-shot phase imaging of highly complex patterns, including biological tissue patterns. The proposed approach opens up new opportunities in incorporating exceptional light manipulation capabilities of the metasurface platform in complex wavefront characterization.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"13 1","pages":"187"},"PeriodicalIF":19.4,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11319597/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141971417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fast, faster, and the fastest structured illumination microscopy. 更快、更快、更快的结构照明显微镜。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-08-12 DOI: 10.1038/s41377-024-01505-2

Tianyu Zhao, Ming Lei

引用次数: 0

Upconversion-based chiral nanoprobe for highly selective dual-mode sensing and bioimaging of hydrogen sulfide in vitro and in vivo. 基于上转换的手性纳米探针，用于体外和体内硫化氢的高选择性双模式传感和生物成像。

IF 19.4 1区物理与天体物理

Light, science & applications Pub Date : 2024-08-01 DOI: 10.1038/s41377-024-01539-6

Yang Lu, Xu Zhao, Dongmei Yan, Yingqian Mi, Peng Sun, Xu Yan, Xiaomin Liu, Geyu Lu

{"title":"Upconversion-based chiral nanoprobe for highly selective dual-mode sensing and bioimaging of hydrogen sulfide in vitro and in vivo.","authors":"Yang Lu, Xu Zhao, Dongmei Yan, Yingqian Mi, Peng Sun, Xu Yan, Xiaomin Liu, Geyu Lu","doi":"10.1038/s41377-024-01539-6","DOIUrl":"10.1038/s41377-024-01539-6","url":null,"abstract":"Chiral assemblies have become one of the most active research areas due to their versatility, playing an increasingly important role in bio-detection, imaging and therapy. In this work, chiral UCNPs/CuxOS@ZIF nanoprobes are prepared by encapsulating upconversion nanoparticles (UCNPs) and CuxOS nanoparticles (NPs) into zeolitic imidazolate framework-8 (ZIF-8). The novel excited-state energy distribution-modulated upconversion nanostructure (NaYbF4@NaYF4: Yb, Er) is selected as the fluorescence source and energy donor for highly efficient fluorescence resonance energy transfer (FRET). CuxOS NP is employed as chiral source and energy acceptor to quench upconversion luminescence (UCL) and provide circular dichroism (CD) signal. Utilizing the natural adsorption and sorting advantages of ZIF-8, the designed nanoprobe can isolate the influence of other common disruptors, thus achieve ultra-sensitive and highly selective UCL/CD dual-mode quantification of H2S in aqueous solution and in living cells. Notably, the nanoprobe is also capable of in vivo intra-tumoral H2S tracking. Our work highlights the multifunctional properties of chiral nanocomposites in sensing and opens a new vision and idea for the preparation and application of chiral nanomaterials in biomedical and biological analysis.","PeriodicalId":18093,"journal":{"name":"Light, science & applications","volume":"13 1","pages":"180"},"PeriodicalIF":19.4,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11294450/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141875274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0