ACS Photonics最新文献

Polarization Conversion and Optical Meron Topologies in Anisotropic Epsilon-Near-Zero Metamaterials 各向异性epsilon -近零超材料的偏振转换和光介子拓扑

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-05-15 DOI: 10.1021/acsphotonics.5c00241

Vittorio Aita, Anastasiia Zaleska, Henry J. Putley, Anatoly V. Zayats

引用次数: 0

Single-Shot Spectral-Temporal Ultrafast Photography: Fundamentals, Methods, and Applications 单镜头光谱-时间超快摄影：基础、方法和应用

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-05-15 DOI: 10.1021/acsphotonics.5c00135

Yu Lu, Yizhao Meng, Fei Yin, Qing Yang, Feng Chen

{"title":"Single-Shot Spectral-Temporal Ultrafast Photography: Fundamentals, Methods, and Applications","authors":"Yu Lu, Yizhao Meng, Fei Yin, Qing Yang, Feng Chen","doi":"10.1021/acsphotonics.5c00135","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c00135","url":null,"abstract":"Recent progress in fundamental science and technology requires observing ultrafast dynamics that are extremely difficult to repeat and with increasing spatial-temporal complexity. Correspondingly, ultrafast imaging methods must realize continuous recording with ultrahigh frame rates and numerous frames in a single shot. To overcome this challenge, spectral-temporal ultrafast photography, which uses spectral dimensions of an observing pulse to detect the temporal dimensions of an ultrafast process, has earned excellent performance. This rapid-developing field holds advantages over other single-shot ultrafast imaging methods with nonreciprocal detecting dimensions using unique spectral-temporal reciprocities. Until now, spectral-temporal ultrafast photography has been capable of hundreds of frames in single-shot detection, a detecting window from femtoseconds to nanoseconds, and tens of femtoseconds in temporal resolution. Here, we comprehensively survey the state-of-the-art spectral-temporal ultrafast imaging methods. Two main steps, the generation of the spectral-temporal observing pulse and the restoration of the spectral image sequence, are discussed. Finally, we summarized current methods and envisioned prospects for advancement.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"57 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144066481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Operando Monitoring the Real-Time pH Evolution of Electrolytes in V-Based AZIBs via a Balloon-like Bent Fiber-Optic Sensor 利用气球状弯曲光纤传感器实时监测v基azib中电解质的pH变化

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-05-14 DOI: 10.1021/acsphotonics.5c00418

Huijing Wei, DongMei Dai, Fang Wang, Siyuan Li, Ao Wang, Chunyan Xu, Xu Wang, Bao Li, Dai-Huo Liu

{"title":"Operando Monitoring the Real-Time pH Evolution of Electrolytes in V-Based AZIBs via a Balloon-like Bent Fiber-Optic Sensor","authors":"Huijing Wei, DongMei Dai, Fang Wang, Siyuan Li, Ao Wang, Chunyan Xu, Xu Wang, Bao Li, Dai-Huo Liu","doi":"10.1021/acsphotonics.5c00418","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c00418","url":null,"abstract":"Vanadium-based aqueous zinc-ion batteries (V-AZIBs) face significant challenges in terms of capacity degradation, zinc dendrite growth, and electrode corrosion; they are affected by the pH fluctuations of the electrolyte during cycling. In this study, a balloon-like bent fiber-optic sensor (BBFOS) was embedded into the electrode/electrolyte interface of a pouch cell, and light signals were collected during charging/discharging and further converted to pH values. Finally, a smart and nondestructive operando device was designed for operando real-time monitoring of the pH evolution of the electrolytes in V-AZIBs. The operando testing results showed a strong correlation between pH evolution and capacity decay in pouch cells and clarified the relationship between pH evolution mechanisms and capacity degeneration in V-AZIBs. Furthermore, the pH stability and the reversible layered chemical mechanism during the charging/discharging process were revealed by using operando BBFOS and operando X-ray powder diffraction analysis, respectively. The highly accurate and nondestructive operando device can promote the progress of AZIBs and other battery systems.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"13 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143979961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nonvolatile Programmable Fiber Weight Bank for Convolution Calculation 用于卷积计算的非易失性可编程光纤权重库

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-05-14 DOI: 10.1021/acsphotonics.5c00215

Yaru Li, Jiaxing Gao, Siying Cheng, Xiang Li, Jiapeng Sun, Hang Yu, Wei Jin, Yu Zhang, Zhihai Liu, Xinghua Yang, Yifan Qin, Libo Yuan

{"title":"Nonvolatile Programmable Fiber Weight Bank for Convolution Calculation","authors":"Yaru Li, Jiaxing Gao, Siying Cheng, Xiang Li, Jiapeng Sun, Hang Yu, Wei Jin, Yu Zhang, Zhihai Liu, Xinghua Yang, Yifan Qin, Libo Yuan","doi":"10.1021/acsphotonics.5c00215","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c00215","url":null,"abstract":"Fiber optics are a reliable medium for sensing and transmission, but processing these optical data requires switching to the electrical domain, which introduces large latency and thermal footprints. Photonic convolutional neural network (PCNN) offers the capability to directly process optical data and exhibits the characteristics of high parallelism, ultrafast processing speeds, and low energy consumption. However, existing PCNN schemes are limited by additional controllers, high-precision configuration, and complex alignment devices. A potential solution is to design a programmable fiber weight bank for PCNN, which supports all-optical in-fiber calculation. Here, we integrate Ge1.4Sb1.22Se3.96Te1 (GSST) on the lateral facets of commercial seven-core optic fibers as a programmable fiber weight bank. The coupling efficiency between the GSST and fiber is enhanced by employing side-polishing techniques. Each GSST cell can be optically altered to exhibit a 16-level weight, depending on the power of the light pulse within the fiber. The fiber weight bank has reconfigurability, parallel computing capability, and can be easily scaled. In addition, a fiber-PCNN is constructed to demonstrate digital recognition with an accuracy of 90.0% (theoretically 91.6%), which combines the calculative capabilities of PCNN with the merits of a fiber, thereby providing a novel solution for remote all-optical computing.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"49 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143946291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Continuous Lines of Topological Singularities in Metasurface Scattering Matrices: From Nodal to Exceptional 超表面散射矩阵中拓扑奇点的连续线：从节点到异常

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-05-14 DOI: 10.1021/acsphotonics.5c00575

Jingguang Chen, Wenzhe Liu, Jiajun Wang, Changxing Li, Ruo-Yang Zhang, Xiaohan Cui, Fang Guan, Lei Shi, Jian Zi, C. T. Chan

{"title":"Continuous Lines of Topological Singularities in Metasurface Scattering Matrices: From Nodal to Exceptional","authors":"Jingguang Chen, Wenzhe Liu, Jiajun Wang, Changxing Li, Ruo-Yang Zhang, Xiaohan Cui, Fang Guan, Lei Shi, Jian Zi, C. T. Chan","doi":"10.1021/acsphotonics.5c00575","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c00575","url":null,"abstract":"Topological properties of Hamiltonian matrices are well studied. However, photonic systems, often open, interact with their environment, and scattering matrices are used to characterize this interaction. Scattering matrices can exhibit their own unique topological features. We demonstrate that two-dimensional periodic photonic systems with open boundaries exhibit continuous lines of topological singularities (eigenvalue degeneracies) in their scattering matrices that are protected by mirror symmetry. In the three-dimensional frequency-momentum space, we find diabolic points and nodal lines, which transform into exceptional points and lines with material loss. These features in the scattering matrix’s eigenvalue structure appear as vortex lines in the cross-polarization scattering phase, linking the eigen-problem to observable phenomena. We demonstrate these effects numerically and experimentally using a reflective nonlocal metasurface. Our findings extend the understanding of symmetry-protected continuous topological singularities to the realm of scattering matrices, opening new avenues for novel photonic devices and advanced wavefront engineering techniques.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"22 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143946292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exception to Causality of the Effective Refractive Index Function in Heterogeneous Media 非均匀介质中有效折射率函数因果关系的例外

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-05-13 DOI: 10.1021/acsphotonics.5c00804

Miguel A. Báez-Chorro, Borja Vidal

{"title":"Exception to Causality of the Effective Refractive Index Function in Heterogeneous Media","authors":"Miguel A. Báez-Chorro, Borja Vidal","doi":"10.1021/acsphotonics.5c00804","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c00804","url":null,"abstract":"Optical constants are generally assumed to be causal functions. Mathematically, causality manifest itself in the Kramers–Kronig (KK) relations that relate the real and imaginary part of physical parameters in stable systems. These relations are also widely used to retrieve optical constants. Here, we present a stable physical heterogeneous system that is macroscopically described by a noncausal effective refractive index. We find that elastic scattering in heterogeneous media where particles have a lower refractive index than the surrounding matrix, results in optical constants that are not connected through KK relations. A modification of KK relations for anticausal media is presented and simulations with established scattering theories, numerical full-field electromagnetic analysis and experimental evidence support the agreement of these relations. Therefore, this physical system, although having a causal impulse response, has noncausal optical constants. These results offer a new insight into causality and restrict its range of applications, showing that some stable physical media can be described by noncausal functions. It also opens new paths to shape the electromagnetic response of artificial materials.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"21 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143940172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-Quality Microfluidic Lasers from Water-Soluble Semiconductor Quantum Dots with Auspicious Optical Gain 具有吉祥光学增益的水溶性半导体量子点制备的高品质微流控激光器

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-05-13 DOI: 10.1021/acsphotonics.5c00349

Wenbing Cai, Yuting Wu, Zhigao Huang, Hai Zhu, Ke Wang, Yue Wang, Yinjuan Ren

{"title":"High-Quality Microfluidic Lasers from Water-Soluble Semiconductor Quantum Dots with Auspicious Optical Gain","authors":"Wenbing Cai, Yuting Wu, Zhigao Huang, Hai Zhu, Ke Wang, Yue Wang, Yinjuan Ren","doi":"10.1021/acsphotonics.5c00349","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c00349","url":null,"abstract":"Water-soluble quantum-dot (w-QD) lasing is crucial for the emerging fields of optofluidics, biophotonics, and diagnostics. However, the existing w-QDs are not competent due to their inferior optical gain and poor photostability. Herein, a hydrophilic ligand screening criterion is established to find suitable candidates for developing w-QD lasers. The comprehensive spectroscopic characterizations reveal that the thioglycolic acid-capped w-QDs exhibit superior gain performance that is on par with those of state-of-the-art nonpolar QDs, including the long gain lifetime, large gain cross-section, and low threshold of amplified spontaneous emission. The mechanistic study based on transient absorption and first-principles calculation discloses that the auspicious gain is enabled by the large surface binding energy, small absolute redox potential, and exceptional dispersibility of the w-QDs. On this basis, a novel high-quality microfluidic laser is constructed from the w-QDs, exhibiting a low threshold, high Q-factor, and long-term robustness. The findings represent a significant step toward w-QD lasers and may unlock new possibilities for advanced optofluidics and medical imaging.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"29 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143940173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantifying the Accuracy and Precision of the Transition Dipole Moment Alignment from Realistic Angular Emission Data 从实际角发射数据量化跃迁偶极矩对准的精度和精度

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-05-12 DOI: 10.1021/acsphotonics.5c00684

Brendan Russ, Tung-Tung Lin, Hannah Elenteny, Carissa N. Eisler

{"title":"Quantifying the Accuracy and Precision of the Transition Dipole Moment Alignment from Realistic Angular Emission Data","authors":"Brendan Russ, Tung-Tung Lin, Hannah Elenteny, Carissa N. Eisler","doi":"10.1021/acsphotonics.5c00684","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c00684","url":null,"abstract":"Optoelectronic device efficiency depends on the effective orientation of its photoluminescent transition dipole moment(s). This orientation is typically quantified indirectly by fitting the angular emission pattern of a material. However, the accuracy and uncertainty of this procedure are unknown, and thus, the predicted efficiency of a device has the potential to be extremely inaccurate. Here, we quantify the inherent accuracy and precision of finding the orientation of transition dipole moment(s). We created artificial data sets of varying transition dipole moment alignments, refractive indices, and thicknesses and used statistical models to determine the fit accuracy and associated confidence intervals. The inherent confidence intervals are inconsistent across transition dipole moment alignments and samples: uncertainty increases for more horizontally aligned dipoles and for higher refractive indices, meaning that quantum-confined semiconductor films will inherently have a less precise fit. We then showed that accurately fitting the transition dipole moment alignment requires adequate knowledge of the film parameters or computationally expensive fitting methods. Finally, we incorporated realistic nonidealities into our generated data sets that led to extremely inaccurate predictions of the true transition dipole moment alignment, with some cases showing 10–30° difference from the true angle. To address this, we developed a new weighting mask that reduced these inaccuracies to be within a few degrees for most cases. Through this work, we provided a framework to more accurately quantify the transition dipole moment alignment and the uncertainty of the associated fit, enabling better predictions of material properties and future device performance.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"8 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143940233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced Second Harmonic Generation from a Waveguide-Integrated Plasmonic Fabry–Pérot Nanoresonator 波导集成等离子体法布里-帕姆罗纳米谐振器增强二次谐波的产生

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-05-10 DOI: 10.1021/acsphotonics.4c02463

Xiaobo He, Li Li, Kangcheng Jing, Tianzhu Zhang, Wenjun Zhang, Junjun Shi, Hongxing Xu

{"title":"Enhanced Second Harmonic Generation from a Waveguide-Integrated Plasmonic Fabry–Pérot Nanoresonator","authors":"Xiaobo He, Li Li, Kangcheng Jing, Tianzhu Zhang, Wenjun Zhang, Junjun Shi, Hongxing Xu","doi":"10.1021/acsphotonics.4c02463","DOIUrl":"https://doi.org/10.1021/acsphotonics.4c02463","url":null,"abstract":"A plasmonic nanoantenna can significantly improve the nonlinear effect owing to strong local electromagnetic fields and a large scattering cross-section. However, direct excitation using high-power incident laser light might destroy the nanoantenna, which hinders further improvement of the nonlinear effect. Here, we use a waveguide-integrated hybrid plasmonic Fabry–Pérot (FP) nanoresonator to achieve enhanced second-harmonic generation (SHG). The fabricated nanoresonator comprises a CdSe nanobelt sandwiched between a Au nanoparticle and a Au nanoplate. The CdSe nanobelt acts as a waveguide that guides light and also serves as a spacer with a high nonlinear susceptibility in the FP nanoresonator to enhance SHG signals. Resonance matching is achieved by tuning the CdSe size and the excitation wavelength. Consequently, a 10-fold increase in the magnitude of SHG is achieved compared to that in the scenario without a nanoparticle. A signal-to-noise ratio of 10.5 is achieved in the remote-excitation configuration, which is 1 order of magnitude higher than that in free-space SHG. This approach paves the way for the fabrication of nonlinear integrated devices and has potential applications in surface-enhanced Raman scattering, biochemical detection, and sensing.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"39 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143931207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phase-Controlled Metasurface Design for Full-Stokes Polarization Detector Driven by SPPN SPPN驱动Full-Stokes偏振探测器的相位控制超表面设计

IF 7 1区物理与天体物理

ACS Photonics Pub Date : 2025-05-09 DOI: 10.1021/acsphotonics.5c00767

Peiqi Yu, Shikun Duan, Qixiang Jia, Yuanyu Zhu, Xueyu Guan, Ruonan Ji, Hailing Wang, Zhongshi Huang, Lin Li, Xiaolong Zhu, Xuechu Shen, Shaowei Wang

{"title":"Phase-Controlled Metasurface Design for Full-Stokes Polarization Detector Driven by SPPN","authors":"Peiqi Yu, Shikun Duan, Qixiang Jia, Yuanyu Zhu, Xueyu Guan, Ruonan Ji, Hailing Wang, Zhongshi Huang, Lin Li, Xiaolong Zhu, Xuechu Shen, Shaowei Wang","doi":"10.1021/acsphotonics.5c00767","DOIUrl":"https://doi.org/10.1021/acsphotonics.5c00767","url":null,"abstract":"Full-Stokes real-time detection, an important polarization detection method, can capture the polarization, spectrum, and intensity information on vector light field simultaneously and improve the ability to accurately identify complex targets significantly. However, in existing systems, the components required for obtaining full-Stokes polarization and circular polarization are often difficult to integrate, relying on multiple parameter adjustments, resulting in time-consuming and heavily dependent on computational resources. In this article, we combine a phase-controlled metasurface with a two-dimensional material detector to design a multidimensional detector with wavelength and full-Stokes polarization selection characteristics. We proposed a spectral phase prediction network based on a convolutional neural network-gated recurrent unit, which effectively addressed the time-consuming and labor-intensive problem of searching for appropriate phase-corresponding structures in phase-regulated metasurface design. This innovation can reduce the design time by a factor of 106. The experimental results show that the circular dichroism of the design achieves 0.8 at the design wavelength, with transmission over 87%. According to the characteristics, the spectra can be improved by combining the designed device with the Fabry–Pérot cavity. Finally, we combined van der Waals materials with the metasurface to achieve a highly integrated full-Stokes polarization spectroscopic photodetector and circular polarization imaging. This study provides a reliable technological approach for the development of next-generation spatial sensing technology and holds promise for future high-dimensional sensing devices to achieve multidimensional detection and recognition of targets.","PeriodicalId":23,"journal":{"name":"ACS Photonics","volume":"107 1","pages":""},"PeriodicalIF":7.0,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143926919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0