Laser & Photonics Reviews最新文献

{"title":"Topological Engineering of High‐Order Exceptional Points Through Transformation Optics","authors":"Kaiyuan Wang, Qi Jie Wang, Matthew R. Foreman, Yu Luo","doi":"10.1002/lpor.202500593","DOIUrl":"https://doi.org/10.1002/lpor.202500593","url":null,"abstract":"Exceptional points (EPs) in non‐Hermitian photonic systems have attracted considerable research interest due to their singular eigenvalue topology and associated anomalous physical phenomena. These properties enable diverse applications ranging from enhanced quantum metrology to chiral light‐matter interactions. Practical implementation of high order EPs in optical platforms however remains fundamentally challenging, requiring precise multi‐parameter control that often exceeds conventional design capabilities. This work presents a novel framework for engineering high order EPs through transformation optics (TO) principles, establishing a direct correspondence between mathematical singularities and physically controllable parameters. This TO‐based paradigm addresses critical limitations in conventional Hamiltonian approaches, where abstract parameter spaces lack explicit connections to experimentally accessible degrees of freedom, while simultaneously providing full mode solutions. In contrast to prevailing parity‐time‐symmetric architectures, this methodology eliminates symmetry constraints in EP design, significantly expanding the possibilities in non‐Hermitian photonic engineering. The proposed technique enables control over EP formation and evolution in nanophotonic systems, offering new pathways for developing topological optical devices with enhanced functionality and robustness.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"70 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145188516","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}

{"title":"A Self‐Powered Optical Fiber Tactile Sensor With Mechanoluminescent Transduction for Robotic Grasping and Hardness Detection","authors":"Yunwen Luo, Shanshan Wang, Jianqing Chang, Yufei Zhao, Zhiqiang Wei, Bo Yin, Jing Wang, Jianjun Liu, Jun‐Cheng Zhang","doi":"10.1002/lpor.202501845","DOIUrl":"https://doi.org/10.1002/lpor.202501845","url":null,"abstract":"Tactile sensing is crucial for machines to interact intelligently with the physical world. Integrating mechanoluminescent (ML) materials with optical fibers presents a promising avenue for developing self‐powered tactile sensors. However, existing ML‐based optical fiber sensors suffer from inefficient signal collection or require complex demodulation strategies, thereby limiting their sensitivity and hindering compact system integration. Here, a self‐powered optical fiber tactile sensor (SOFTS) based on ML composites directly coupled to the core of a standard multimode fiber is reported. This architecture enables efficient light collection, simplifies signal demodulation, and reduces system complexity and size. The resulting sensor exhibits stable and robust ML emission in response to mechanical stimulation, without the need for external excitation. Integration of SOFTS with a robotic manipulator demonstrates real‐time tactile feedback for object grasping and hardness detection, showcasing its potential for robotics and human‐machine interfaces. This work establishes a simple, scalable, and robust platform for advancing ML‐based self‐powered optical tactile sensing technologies.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"92 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145188515","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}

{"title":"Dual‐Site Cooperative Regulation Strategy Enables High‐Performance Near‐Infrared Luminescence and Wireless Communication Applications of Cr3+ Activated Garnet Phosphors","authors":"Xiaoqing Pei, Yuqi Cai, Zibo Mi, Lin Fan, Tao Jiang, Lina Liu, Chun Li, Hai Lin, Shasha Li, Weiling Yang, Fanming Zeng","doi":"10.1002/lpor.202501792","DOIUrl":"https://doi.org/10.1002/lpor.202501792","url":null,"abstract":"Broadband near‐infrared (NIR) phosphors have attracted significant attention as next‐generation intelligent NIR light sources. However, simultaneously achieving blue‐light excitation, long‐wavelength emission (&gt;810 nm), and the synergistic optimization of high thermal stability and quantum efficiency remains a critical challenge. In this study, a dual‐site cooperative regulation strategy is successfully employed to construct Cr<jats:sup>3+</jats:sup>‐activated garnet‐type NIR phosphors [Ca<jats:sub>2+</jats:sub><jats:italic><jats:sub>y</jats:sub></jats:italic>Gd<jats:sub>1‐</jats:sub><jats:italic><jats:sub>y</jats:sub></jats:italic>]Zr<jats:sub>2</jats:sub>[Al<jats:sub>3‐</jats:sub><jats:italic><jats:sub>y</jats:sub></jats:italic>Ge<jats:italic><jats:sub>y</jats:sub></jats:italic>]O<jats:sub>12</jats:sub>: 0.01Cr<jats:sup>3+</jats:sup>, realizing high‐performance broadband NIR luminescence and multifunctional applications. The cooperative substitution at A‐site (Ca<jats:sup>2+</jats:sup>/Gd<jats:sup>3+</jats:sup>) and C‐site (Al<jats:sup>3+</jats:sup>/Ge<jats:sup>4+</jats:sup>) induces multidimensional regulation, including full width at half maximum (FWHM) broadening (ΔFWHM = 35 nm/305 cm<jats:sup>−1</jats:sup>), emission peak redshift (47 nm), and luminescence enhancement (2.58 times). The [CrO<jats:sub>6</jats:sub>] octahedral distortion caused by dodecahedral expansion and tetrahedral contraction, along with electron paramagnetic resonance (EPR) variations, elucidates the intrinsic mechanisms of FWHM broadening and emission redshift. The dual‐site cooperative regulation effectively widens the material bandgap while significantly enhancing structural rigidity, thereby achieving excellent thermal stability (93.8%@423 K). Based on the differential response characteristics of this phosphor to acidic environments, a Morse code‐based encryption system is successfully developed. A near‐infrared phosphor‐converted light‐emitting diode (pc‐LED) is fabricated, achieving nondestructive testing, near‐infrared imaging, night vision, and stable wireless optical communication. This study provides an innovative design strategy for developing high‐performance near‐infrared phosphors.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"97 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145188610","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}

{"title":"Spatial Ln3+-Enrichment in Nano-Phases and kinetic Pulse-Compression on Multiphoton Upconversion Pumping Toward UV Lasing Glass-Ceramics","authors":"Qunhuo Liu, Xuezhe Dong, Yujie Liu, Weilin Chen, Yingying Cui, Abhishek Wadhwa, Ting Wang, Xvsheng Qiao, Jincheng Du, Guodong Qian, Xianping Fan, Siu Fung Yu","doi":"10.1002/lpor.202501591","DOIUrl":"https://doi.org/10.1002/lpor.202501591","url":null,"abstract":"The multiphoton upconversion of near-infrared (NIR) light into challenging UV emission is of great importance and interest for both fundamental research and advanced applications. However, the NIR-to-UV multiphoton upconversion process is inherently inefficient. In this work, a strategy is presented to enhance NIR-to-UV conversion by integrating spatial and temporal control of energy transfer (ET) in lanthanide-doped transparent materials. Through a molecular dynamics simulation-assisted glass-ceramic design approach, the spatial distance is reduced between Yb-Tm-Gd ions and accelerated their ET rates, achieving a 267-fold enhancement of UV emission at 311 nm. Furthermore, this is showed that energy depletion in intermediate excited levels and back ET can be suppressed through short pulse-width excitation, thereby increasing the proportion of UV photons in upconversion emissions from 1.61% to 38.81%. Consequently, low-threshold, room-temperature random lasing at 311 nm under 980 nm ns laser excitation is realized. These findings establish a novel design framework for developing compact solid-state UV lasers with practical applicability.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"4 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145183019","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}

{"title":"Direct Laser Writing 3D Carbon Dot Array for Orbital Angular Momentum Holographic Encryption","authors":"Dapu Pi, Le Gao, Yiqi Ye, Yi Wei, Zhiwen Mu, Xinyuan Fang, Qiming Zhang, Min Gu","doi":"10.1002/lpor.202501648","DOIUrl":"https://doi.org/10.1002/lpor.202501648","url":null,"abstract":"Information security is crucial in modern society, spawning numerous cryptographic strategies to protect data from stealing and deciphering. Among them, optical encryption is an excellent candidate due to its unique features such as high‐speed parallel processing, low power consumption, and abundant degree of freedom. Despite recent advances of nanophotonic devices that have promoted the development of optical encryption techniques, the realization of high‐security and high‐capacity all‐optical 3D image encryption remains an ongoing challenge due to the absence of a suitable 3D nanophotonic device. Here, the study constructs an integrated 3D carbon dot (CD) array through direct laser writing (DLW) in a solid‐state polymeric material and demonstrate its parallel manipulation and selective transmission characteristics of multiple orbital angular momentum (OAM) beams. Benefitting from the photo‐luminescence responses of the CDs and theoretically unlimited helical mode indices of OAM beams, a high‐security and high‐capacity all‐optical encryption platform by integrating the 3D CD array and an OAM‐multiplexing hologram is developed. Through the platform, the encryption and decryption of a series of multi‐plane 3D images can be realized without additional digital post‐processing. The results provide a novel inspiration for nanophotonic devices‐based all‐optical encryption and advance the development of optical encryption applications harnessing light's OAM dimension.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"106 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145182792","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}

{"title":"High‐Fidelity Solution Decomposition Fluorescence Tomography in the Presence of Background Interference","authors":"Jianru Zhang, Linlin Li, Qian Hu, Jieying Zhang, Yanan Wu, Liangtao Gu, Jianfeng Li, Fuyou Li, Xingjun Zhu, Jiahua Jiang, Wuwei Ren","doi":"10.1002/lpor.202501013","DOIUrl":"https://doi.org/10.1002/lpor.202501013","url":null,"abstract":"Fluorescence imaging is a cornerstone of preclinical research, yet its utility is hindered by semi‐quantitative limitations due to light scattering. Fluorescence molecular tomography (FMT) aims to overcome these constraints by generating 3D fluorophore maps through model‐based reconstruction. However, background fluorescence, resulting from non‐specific probe binding and autofluorescence, significantly compromises FMT image quality with severe artifacts. Solution decomposition FMT (SD‐FMT) is introduced, an innovative reconstruction method that employs an advanced prior model to decompose the solution into multiple stochastic components. The reformulated inverse problem is resolved using a hybrid projection method (HPM), ensuring robustness and efficiency. Validated through exhaustive phantom and in vivo proof‐of‐concept studies, SD‐FMT represents a paradigm shift in FMT reconstruction, with significant implications for expanding applications in preclinical research and advancing fluorescence‐guided surgical navigation.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"95 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145182854","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}

{"title":"Large Field‐Of‐View Imaging Through Scattering Layers With Optimized Illumination and Localization–Grayscale Fusion","authors":"Haiming Yuan, Fei Wang, Jingdan Liu, Guohai Situ","doi":"10.1002/lpor.202501315","DOIUrl":"https://doi.org/10.1002/lpor.202501315","url":null,"abstract":"Optical imaging through inhomogeneous scattering media is essential, particularly in medical imaging, where enhanced penetration depth and an expanded field‐of‐view (FOV) are urgently demanded. Non‐negative matrix factorization (NMF) provides an effective solution for large FOV non‐invasive imaging through scattering layers. However, the emerging NMF requires extensive measurement data across multiple encoding patterns. Furthermore, NMF reconstructions often suffer from loss of grayscale accuracy and the inclusion of background noise. Here, an innovative method is presented that leverages encoding‐sparsity optimization (ESO) to decrease the amount of data required by approximately an order of magnitude. Additionally, a precise reconstruction algorithm is introduced using Localization and Grayscale‐Fusion (LG‐Fusion), which eliminates background noise and extends the FOV to 4.3 times the memory effect range (MER). The technique enables efficient, high‐quality imaging with large FOVs through a 200‐‐thick mouse brain.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"3 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145182790","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}

{"title":"Wide‐Angle Conformal Active Metasurface for Dynamic Beam Steering and Orbital Angular Momentum Generation","authors":"Haiqing Chen, Tonghao Liu, Mengzhou Chen, Dongshu Wang, Weihan Li, Borui Wu, Long Wang, Gu Liu, Liuying Wang","doi":"10.1002/lpor.202501500","DOIUrl":"https://doi.org/10.1002/lpor.202501500","url":null,"abstract":"Metasurfaces have intrigued long‐standing research interests and developed multitudinous compelling applications owing to their unprecedented capability for manipulating electromagnetic (EM) waves, and the emerging programmable coding metasurfaces provide a real‐time reconfigurable platform to dynamically implement customized functions. Nevertheless, the passive metasurfaces, once fabricated, lack dynamic tunability, while existing metasurface‐based stealth designs are primarily based on planar metasurfaces, which severely limit their applicability to curved platforms. In this work, an innovative strategy is proposed for conformal active metasurface (CAM) by integrating 3D‐printed curved substrates with voltage‐programmable 2‐bit phase coding. This design enables dual‐functional tunable EM waves functions in adaptive beam steering for radar cross‐section (RCS) enhancement and in vortex wave generation with orbital angular momentum (OAM) for communication from 9.3 to 10.5 GHz. Simulation and experimental results demonstrate that the CAM can deflect incident waves with angles ranging from 0° to 50° in the beam‐steering mode and achieve preset reflection directions with a pointing accuracy of better than ±2°. The RCS is reduced by more than 10 dB along the incident direction, while it is enhanced by up to +8.9 dB in the preset reflection direction, effectively enabling wide‐angle radar stealth for both illusionary stealth and camouflage. In the OAM mode, the CAM generates vortex beams with OAM at 150 mm, which can effectively increase the spectral efficiency of wireless communication systems. This promising design paves the way for the development of intelligent metasurfaces with enhanced serviceability and flexibility, offering tremendous potential for applications in communication, stealth, and other multifunctional smart metadevices.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"101 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145182793","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}

{"title":"Ultra‐Broadband, Rapid, and Trace Terahertz Fingerprint Detection via Resonance Interaction Enhancement with an Unpatterned Dielectric Wafer","authors":"Qiang Niu, Jiarui Hu, Han Hao, Rong Zhao, Guling Zhang, Jinfeng Zhu, Yuping Yang","doi":"10.1002/lpor.202500848","DOIUrl":"https://doi.org/10.1002/lpor.202500848","url":null,"abstract":"Enhancing the interaction between light and matter, especially at the terahertz band, is pivotal for achieving ultra‐broadband trace molecular fingerprint detection. Here, an efficient scheme featuring multiple Fabry–Pérot modes with equal intervals and uniform intensity is presented to implement a resonance interaction enhancement of molecular fingerprints with long‐awaited precision and flexibility. This technique constructs uniform resonant probes across the entire spectral range to reveal molecular coupling effects via frequency‐selective amplitude attenuation, enabling both qualitative and quantitative detection of L‐tyrosine with a detection limit of 0.11 µg mm<jats:sup>−2</jats:sup>. This is an inaugural experimental achievement of quantitative THz trace fingerprint detection with dual capabilities of achieving ultra‐broadband and high‐efficiency. Significantly, the technology enables direct identification of molecular absorption signatures from the transmitted multiple Fabry–Pérot modes using wavelet denoising algorithms, eliminating cumbersome data postprocessing and redundant testing procedures. This advancement heralds a new, accessible era in terahertz fingerprint spectroscopy.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"29 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145182858","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}

{"title":"Independent Control of Quality Factor and Circular Dichroism via Intrinsic Chiral Plasmonic Bound States in the Continuum","authors":"Minghao An, Lixiong Lin, Keren Wang, Qi Ding, Yuyu Zhang, Wei Wang, Xiaorui Zheng","doi":"10.1002/lpor.202501707","DOIUrl":"https://doi.org/10.1002/lpor.202501707","url":null,"abstract":"Chiral plasmonic metasurfaces face a fundamental trade‐off between high circular dichroism (CD) and large quality (Q) factors due to radiative losses from asymmetric geometries. Although photonic bound states in the continuum (BICs) can suppress radiative losses to enhance Q‐factors, current plasmonic chiral quasi‐BIC designs remain limited to 2D configurations or infrared regimes, which limits the control over optical chirality and resonance linewidth. Here, 3D symmetry‐broken plasmonic metasurfaces operating in the visible spectrum are introduced, enabled by a nanofabrication breakthrough integrating thermal scanning probe lithography (t‐SPL) and anisotropic etching. This methodology achieves nm‐scale height control in out‐of‐plane architectures, enabling chiral quasi‐BIC resonances with independent tuning of CD (0–0.6) and Q‐factor (10–55)—establishing unprecedented performance benchmarks in chiroptical plasmonic metasurfaces. Crucially, the 3D height asymmetry parameter independently governs CD intensity, while BIC‐engineered symmetry breaking enables precise Q‐factor tuning via radiative loss modulation. Hyperspectral CD mapping reveals that the decoupled control mechanism originates from orthogonalized multipolar interactions between in‐plane lattice modes and out‐of‐plane plasmonic couplings. By resolving long‐standing fabrication challenges in 3D metasurfaces, a universal framework is established for applications demanding concurrent chiral selectivity and ultraconfined fields, including chiral nanolasers, enantioselective nonlinear systems, and quantum emitter interfaces with spin‐photon interactions.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"27 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145181115","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}