Nanophotonics最新文献_第2页

Higher-order spatiotemporal wave packets with Gouy phase dynamics 具有guy相位动力学的高阶时空波包

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-12-10 DOI: 10.1515/nanoph-2025-0508

Wangke Yu, Yijie Shen

{"title":"Higher-order spatiotemporal wave packets with Gouy phase dynamics","authors":"Wangke Yu, Yijie Shen","doi":"10.1515/nanoph-2025-0508","DOIUrl":"https://doi.org/10.1515/nanoph-2025-0508","url":null,"abstract":"Spatiotemporal (ST) wave packets constitute a broad class of optical pulses whose spatial and temporal degrees of freedom cannot be treated independently. Such space-time non-separability can induce exotic physical effects such as non-diffraction, non-transverse waves, and sub or superluminal propagation. Here, a higher-order generalised family of ST modes is presented, where modal orders are proposed to enrich their ST structural complexity, analogous to spatial higher-order Gaussian modes. This framework also incorporates spatial eigenmodes and typical ST pulses (e.g., toroidal light pulses) as elementary members. The modal orders are strongly coupled to the Gouy phase, which can unveil anomalous ST Gouy-phase dynamics, including ultrafast cycle-switching evolution, ST self-healing, and sub/super-luminal propagation. We further introduce a stretch parameter that stretches the temporal envelope while keeping the Gouy-phase coefficient unchanged. This stretch invariance decouples pulse duration from modal order, allowing us to tune the few-cycle width without shifting temporal-revival positions or altering the phase/group-velocity laws. Moreover, an approach to analysing the phase velocity and group velocity of the higher-order ST modes is proposed to quantitatively characterise the sub/super-luminal effects. The method is universal for a larger group of complex structured pulses, laying the basis for both fundamental physics and advanced applications in ultrafast optics and structured light.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"39 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145711406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Electrically pumped soliton microcombs on thin-film lithium niobate 薄膜铌酸锂上的电泵孤子微梳

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-12-10 DOI: 10.1515/nanoph-2025-0510

Xiaomin Lv, Ze Wang, Tianyu Xu, Chen Yang, Xing Jin, Binbin Nie, Du Qian, Yanwu Liu, Kaixuan Zhu, Bo Ni, Qihuang Gong, Fang Bo, Qi-Fan Yang

引用次数: 0

Scalable unitary computing using time-parallelized photonic lattices 使用时间并行光子晶格的可扩展单位计算

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-12-09 DOI: 10.1515/nanoph-2025-0498

Hyungchul Park, Beomjoon Chae, Hyunsoo Jang, Sunkyu Yu, Xianji Piao

{"title":"Scalable unitary computing using time-parallelized photonic lattices","authors":"Hyungchul Park, Beomjoon Chae, Hyunsoo Jang, Sunkyu Yu, Xianji Piao","doi":"10.1515/nanoph-2025-0498","DOIUrl":"https://doi.org/10.1515/nanoph-2025-0498","url":null,"abstract":"Exploiting alternative physical dimensions beyond the spatial domain has been intensively explored to improve the scalability in photonic computing. One approach leverages dynamical systems for time-domain computation, enabling universal and reconfigurable unitary operations. Although this method yields O ( N ) scaling in both device footprint and gate count, the required computation time increases by O ( N 2 ), which hinders practical implementation due to limitations in quality factors and modulation speeds of optical elements. Here, we propose time-parallelized photonic lattices that achieve O ( N ) time scalability while preserving the O ( N ) spatial scaling. We devise a pseudospinor buffer operation that temporally stores the optical information, thereby enabling parallel unitary computation. The proposed method not only mitigates the requirement for high-quality factors but also provides robustness against a broad range of defects, demonstrating the feasibility of time-domain photonic computation.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"20 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145703990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Editorial on special issue “The 11th International Conference on Surface Plasmon Photonics (SPP11)” 第十一届国际表面等离子体光子学会议特刊社论

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-12-09 DOI: 10.1515/nanoph-2025-2000

Takuo Tanaka, Wakana Kubo

引用次数: 0

Charge reservoir as a design concept for plasmonic antennas 电荷库作为等离子体天线的设计概念

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-12-08 DOI: 10.1515/nanoph-2025-0421

Rostislav Řepa, Michal Horák, Tomáš Šikola, Vlastimil Křápek

引用次数: 0

Lithography-free subwavelength metacoatings for high thermal radiation background camouflage empowered by deep neural network 基于深度神经网络的无光刻亚波长超镀膜高热辐射背景伪装

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-12-08 DOI: 10.1515/nanoph-2025-0409

Qianli Qiu, Kang Li, Dongjie Zhou, Yuyang Zhang, Jinguo Zhang, Zongkun Zhang, Yan Sun, Lei Zhou, Ning Dai, Junhao Chu, Jiaming Hao

{"title":"Lithography-free subwavelength metacoatings for high thermal radiation background camouflage empowered by deep neural network","authors":"Qianli Qiu, Kang Li, Dongjie Zhou, Yuyang Zhang, Jinguo Zhang, Zongkun Zhang, Yan Sun, Lei Zhou, Ning Dai, Junhao Chu, Jiaming Hao","doi":"10.1515/nanoph-2025-0409","DOIUrl":"https://doi.org/10.1515/nanoph-2025-0409","url":null,"abstract":"The long wavelength infrared (LWIR) range (8–14 µm) is crucial for thermal radiation detection, necessitating effective camouflage against advanced infrared technologies. Conventional camouflage approaches often rely on complicated photonic structures, facing significant implementation challenges. This study introduces a novel polarization-insensitive and angle-robust metacoating emitter for LWIR camouflage, inversely designed through a deep neural network (DNN) framework. The DNN framework facilitates the automatic optimization of the metacoating’s structural and material parameters. The resulting emitter achieves an average emissivity of 0.96 covering the LWIR range and a low emissivity of 0.25 in the other mid-infrared (MIR) region. Enhanced electromagnetic wave localization and energy dissipation, driven by high-lossy materials like bismuth and titanium, contribute to these properties. Infrared imaging confirms the emitter’s superior camouflage performance, maintain effectiveness at incident angle up to 70° while exhibiting strong polarization independence. This inverse-designed metacoating demonstrates significant potential to advance infrared camouflage technology, providing robust countermeasures against modern, wide-angle, and polarization-sensitive detection systems.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"4 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145697019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Chirality-driven all-optical image differentiation 手性驱动的全光学图像微分

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-12-08 DOI: 10.1515/nanoph-2025-0479

Stefanos Fr. Koufidis, Zeki Hayran, Francesco Monticone, John B. Pendry, Martin W. McCall

{"title":"Chirality-driven all-optical image differentiation","authors":"Stefanos Fr. Koufidis, Zeki Hayran, Francesco Monticone, John B. Pendry, Martin W. McCall","doi":"10.1515/nanoph-2025-0479","DOIUrl":"https://doi.org/10.1515/nanoph-2025-0479","url":null,"abstract":"Optical analog computing enables powerful functionalities, including spatial differentiation, image processing, and ultrafast linear operations. Yet, most existing approaches rely on resonant or periodic structures, whose performance is strongly wavelength-dependent, imposing bandwidth limitations and demanding stringent fabrication tolerances. Here, to address some of these challenges, we introduce a highly tunable platform for optical processing, composed of two cascaded uniform slabs exhibiting both circular and linear birefringence, whose response exhibits features relevant to optical processing without relying on resonances. Specifically, using a coupled-wave theory framework we show that sharp reflection minima, referred to as spectral holes, emerge from destructive interference between counter-propagating circularly polarized waves in uniform birefringent slabs, and can be engineered solely through parameter tuning without requiring any spatial periodicity. When operated in the negative-refraction regime enabled by giant chirality, the interference response acquires a highly parabolic form around the reflection minimum, giving rise to a polarization-selective Laplacian-like operator that performs accurate spatial differentiation over a broad spatial-frequency range. This functionality is demonstrated through an edge-detection proof of concept. The required material parameters align closely with recent experimental demonstrations of giant, tunable chirality via meta-optics, presenting a promising pathway towards compact and reconfigurable platforms for all-optical pattern recognition and image restoration.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"133 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145696981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Wavelength- and angle-multiplexed full-color 3D metasurface hologram 波长和角度复用全彩色三维超表面全息图

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-12-08 DOI: 10.1515/nanoph-2025-0504

Tetsuhito Omori, Kentaro Iwami

{"title":"Wavelength- and angle-multiplexed full-color 3D metasurface hologram","authors":"Tetsuhito Omori, Kentaro Iwami","doi":"10.1515/nanoph-2025-0504","DOIUrl":"https://doi.org/10.1515/nanoph-2025-0504","url":null,"abstract":"Metasurface holography is a promising technology for next-generation 3D displays, however, conventional approaches for full-colorization have faced challenges. Wavelength multiplexing based on spatial segmentation/interleaving inevitably reduces pixel density, while techniques reliant on the Pancharatnam–Berry (PB) phase are inherently polarization-dependent and have a theoretical efficiency limit of 50 %. In this work, we propose and experimentally demonstrate a design strategy that overcomes these limitations. The core of our approach is a single, polarization-independent meta-atom, realized with cross-shaped nanopillars made of silicon nitride (SiN), which enables the simultaneous and independent phase control over the three primary colors required for faithful 3D image reconstruction. This single-unit strategy surpasses the pixel density limitations of wavelength multiplexing. Furthermore, we combine this innovation with crosstalk elimination via spatial division of target 3D images and precise angle correction to ensure high-fidelity, superimposed reconstruction. Experimentally, we have successfully reconstructed high-definition, noise-free 3D full-color holograms. Our work resolves the critical limitations of pixel density and polarization dependence in metasurface holography, providing a robust pathway toward practical, high-performance holographic displays.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"65 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145703941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Synergistic enhancement of magneto-optical response in cobalt-based metasurfaces via plasmonic, lattice, and cavity modes 通过等离子体、晶格和腔模式协同增强钴基超表面的磁光响应

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-12-08 DOI: 10.1515/nanoph-2025-0495

Alberto Santonocito, Alessio Gabbani, Barbara Patrizi, Guido Toci, Francesco Pineider

{"title":"Synergistic enhancement of magneto-optical response in cobalt-based metasurfaces via plasmonic, lattice, and cavity modes","authors":"Alberto Santonocito, Alessio Gabbani, Barbara Patrizi, Guido Toci, Francesco Pineider","doi":"10.1515/nanoph-2025-0495","DOIUrl":"https://doi.org/10.1515/nanoph-2025-0495","url":null,"abstract":"Static metasurfaces offer precise control over light but lack reconfigurability, limiting their use in dynamic applications. Introducing tunability via external stimuli, such as magnetic fields, enables active control of their optical response, broadening their functionality. In this computational study, we present the design of a metal–dielectric–metal magnetoplasmonic metasurface with improved magnetic field tunability, surpassing the magneto-optical response of unstructured ferromagnetic materials. This improvement arises from the synergistic effect of localized plasmon excitation, surface lattice resonance, and Fabry–Pérot cavity modes. The design approach presented here consists in matching the characteristic resonance frequencies of the three phenomena by iteratively adjusting the structural parameters of the metasurface: nanostructure size, lattice period, and cavity layer thickness. This optimization led to a substantial enhancement in the reflectance modulation induced by an external magnetic field, with the overall contrast exceeding that of an unstructured cavity by more than an order of magnitude across various regions of the visible to near-infrared spectrum, under relatively low magnetic fields. This unique capability makes the system a promising tool for magnetic field-sensitive optical modulation of reflected light intensity, with potential applications as a laser amplitude modulator.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"11 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145703946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Mitigate the variation of energy band gap with electric field induced by quantum confinement Stark effect via a gradient quantum system for frequency-stable laser diodes 利用梯度量子系统研究了频率稳定激光二极管中量子约束斯塔克效应引起的能带隙随电场的变化

IF 7.5 2区物理与天体物理

Nanophotonics Pub Date : 2025-12-08 DOI: 10.1515/nanoph-2025-0380

Yuhong Wang, Yiwei Zhang, Zihan Jiang, Jian Wu, Chunqing Gao

{"title":"Mitigate the variation of energy band gap with electric field induced by quantum confinement Stark effect via a gradient quantum system for frequency-stable laser diodes","authors":"Yuhong Wang, Yiwei Zhang, Zihan Jiang, Jian Wu, Chunqing Gao","doi":"10.1515/nanoph-2025-0380","DOIUrl":"https://doi.org/10.1515/nanoph-2025-0380","url":null,"abstract":"Most light-emitting devices based on quantum-confined structures are commonly utilized as electrically injected devices. However, the electric-field-dependent energy band gap induced by the quantum confinement Stark effect (QCSE) usually hinders the realization of frequency-stable laser devices. This is because the change in the energy band gap, which also means the corresponding change in the photon energy, will result in an electric-field-dependent frequency. Here, we propose a novel approach to mitigate this electric-field-dependent variation in the energy band gap by employing a gradient quantum system. In this system, the energy band edges are inclined due to the action of the indium (In)-segregation effect. This special design can effectively weaken the changes in the band profile associated with the electric field effect and counteract the electric-field-dependent band gap variations within the active region to a certain extent. Experimental studies indicate that the energy band gap of this gradient quantum system remains almost unchanged (<18.9 μeV cm 2 /A) even under a relatively strong applied electric field. Meanwhile, compared with the traditional GaAs quantum well, the efficiency improvement in the band gap stability of our nanowire–well gradient system is 64.1 % and 70.6 % for the TE and TM polarization modes, respectively, which suggests that our proposed gradient quantum structure can significantly mitigate the electric-field-induced change in the energy band gap. This achievement is of great significance for advancing the development of high-performance frequency-stable laser devices in some advanced fields, such as quantum sensing systems and optical communications.","PeriodicalId":19027,"journal":{"name":"Nanophotonics","volume":"19 1","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145703945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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