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Reprogrammable Vector Optical Field Meets Planar Liquid Crystal Elements for Enhanced Security in Holography
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-03-16 DOI: 10.1002/lpor.202401962
Xin Xu, Runzhe Zhang, Yinghui Guo, Mingbo Pu, Dapeng Zhang, Qi Zhang, Xiaoyin Li, Hengshuo Guo, Fei Zhang, Mingfeng Xu, Xiangang Luo
{"title":"Reprogrammable Vector Optical Field Meets Planar Liquid Crystal Elements for Enhanced Security in Holography","authors":"Xin Xu, Runzhe Zhang, Yinghui Guo, Mingbo Pu, Dapeng Zhang, Qi Zhang, Xiaoyin Li, Hengshuo Guo, Fei Zhang, Mingfeng Xu, Xiangang Luo","doi":"10.1002/lpor.202401962","DOIUrl":"https://doi.org/10.1002/lpor.202401962","url":null,"abstract":"As information security becomes an increasingly challenging and highly prioritized issue, optical holographic encryption has recently attracted significant attention. In particular, vector holography exploits the vector properties of light to overcome the limitations of traditional scalar holography, enhancing the dimensionality of optical encryption and improving the security. However, current vector holographic encryption methods focus solely on the design of metasurfaces or liquid crystal (LC) devices, without fully considering the interaction between the incidence and device, thereby limiting the available encryption channels. Vector optical field, which has arbitrarily designed wavefronts and polarization state distributions, provides greater degrees of control than uniform scalar field. In this work, traditional vector holographic encryption integrates with vector optical field to propose the secure holography by directly encoding vector information into a reprogrammable vector incidence. This method involves dividing and distributing secret information among various secret carriers, namely the vector optical field, the LC device, and the analyzer. By encoding the vector properties of the incidence and the orientation of the analyzer's transmission axis, multi‐channel vector encryption holography is achieved utilizing a static LC device. The proposal provides a promising pathway for advancing optical information encryption, strengthening authentication capabilities, and enhancing overall information security.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"92 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143631310","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
Spatio-Spectral Customized Light Structures for Subwavelength Highly Resolved Multiplexing of Diffractive Optics
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-03-15 DOI: 10.1002/lpor.202500252
Biagio Audia, Pasquale Pagliusi, Alfredo Mazzulla, Gabriella Cipparrone
{"title":"Spatio-Spectral Customized Light Structures for Subwavelength Highly Resolved Multiplexing of Diffractive Optics","authors":"Biagio Audia, Pasquale Pagliusi, Alfredo Mazzulla, Gabriella Cipparrone","doi":"10.1002/lpor.202500252","DOIUrl":"https://doi.org/10.1002/lpor.202500252","url":null,"abstract":"Standing-waves created by counter-propagating light beams can adopt various forms, offering flexible and efficient methods for recording complex periodic structures in polarization-sensitive materials. Compared to conventional holographic/lithographic techniques, this approach simplifies the encoding of intricate and customizable light structures with finely tunable periodicities and highresolution. It also overcomes limitations at submicrometric periodicities, where traditional methods struggle to maintain fidelity to desired designs. This study explores 1D standing-waves with different polarization gradients, such as corkscrew and Sisyphus patterns. Generated by laser beams operating in multiline-mode with decoupled intensity and polarization control, these light structures can encode multiple, independent polarization volume gratings simultaneously in a single-step process. Submicrometric periodicities are achieved by positioning the material layer at a tilting angle within the standing-wave, allowing fine-tuning of the recording periodicities with a few nanometers spatial resolution. The resulting gratings diffract light at notably large angles, preserving polarization properties and avoiding crosstalk. These spatio-spectral structures hold transformative potential for ultra-compact optical systems. Key applications include material structuring, advanced information processing with higher capacity and security, and augmented/virtual reality platforms, where efficient polarization control ensures high-fidelity image projection and interaction. This method opens unexplored opportunities for scalable, high-resolution applications in cutting-edge optical technologies.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"39 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143627649","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
Vectorial Beams With Longitudinally Varying Polarizations Generated by Surface‐Wave Metasurfaces
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-03-14 DOI: 10.1002/lpor.202402298
Xiangyu Jin, Zhuo Wang, Muhan Liu, Jianru Li, Zhiyan Zhu, Yingying Wang, Liangwei Li, Yizhen Chen, Weikang Pan, Shaojie Ma, Qiong He, Lei Zhou, Shulin Sun
{"title":"Vectorial Beams With Longitudinally Varying Polarizations Generated by Surface‐Wave Metasurfaces","authors":"Xiangyu Jin, Zhuo Wang, Muhan Liu, Jianru Li, Zhiyan Zhu, Yingying Wang, Liangwei Li, Yizhen Chen, Weikang Pan, Shaojie Ma, Qiong He, Lei Zhou, Shulin Sun","doi":"10.1002/lpor.202402298","DOIUrl":"https://doi.org/10.1002/lpor.202402298","url":null,"abstract":"Generating structured electromagnetic (EM) beams in pre‐designed manners is highly desired in photonics applications, but conventional devices suffer from the issues of bulky sizes and restricted functionalities. Although metasurfaces have exhibited powerful capabilities in controlling EM waves, they usually work under propagating‐wave (PW) excitations, being unfavorable for EM integration. Here, a generic scheme is proposed to design metasurfaces that can efficiently generate far‐field (FF) vectorial beams with <jats:italic>longitudinally varying</jats:italic> polarizations under surface‐wave (SW) excitations. Such metasurfaces consist of two sub‐sets of Pancharatnam‐Berry (PB) meta‐atoms with specifically designed orientation angles, each sub‐set can generate a circularly polarized FF beam with a particular spin and their interference forms the target vectorial beam. After experimentally demonstrating two benchmark metadevices for generating FF beams with homogeneously distributed polarizations, a microwave metasurface is designed and fabricated and experimentally demonstrate that it can generate a Bessel beam with longitudinally varying polarization under SW excitation. These findings significantly expand the capabilities of metasurfaces in controlling EM waves, paving the way to realize many applications in on‐chip photonics, such as chip‐integrated displays, encrypted holography, and augmented reality technology.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"54 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143618456","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
Dynamic Multi-Focus 3D Laser Nanoprinting Based on Two-Step Absorption and Computational Holography
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-03-13 DOI: 10.1002/lpor.202500187
Pascal Rietz, Paul Somers, Sebastian Kalt, Jonathan Ludwig Günter Schneider, Pascal Kiefer, Martin Wegener
{"title":"Dynamic Multi-Focus 3D Laser Nanoprinting Based on Two-Step Absorption and Computational Holography","authors":"Pascal Rietz, Paul Somers, Sebastian Kalt, Jonathan Ludwig Günter Schneider, Pascal Kiefer, Martin Wegener","doi":"10.1002/lpor.202500187","DOIUrl":"https://doi.org/10.1002/lpor.202500187","url":null,"abstract":"Two-step-absorption 3D laser nanoprinting allows for using compact and low-cost continuous-wave (cw) lasers. Therefore, it is an attractive alternative to established state-of-the-art multi-photon-absorption 3D laser nanoprinting. Additionally, low single-focus polymerization-threshold laser powers pave the way for multi-focus parallelization approaches while still using compact cw laser sources. Parallelization is further encouraged by the fact that single-focus scanning velocities are inherently limited by the intermediate-state lifetime of the photoresist system used. Herein, a 3D nanoprinting setup that combines an established two-step-absorption photoresist system with a dynamic multi-focus approach based on binary holography and a digital micromirror device (DMD) is presented. The generated holographic patterns allow for combined beam-splitting and beam-steering as well as for the control of each focus’ individual intensity. Therefore, one obtains a versatile printing approach, enabling a dynamic change of the number of foci for each pattern, based on the structure to be printed. With this setup, the printing of 3D microstructures using up to 31 laser foci in parallel at a print rate of up to <span data-altimg=\"/cms/asset/1ff205e0-0eb1-44e0-8165-a4080bd38551/lpor202500187-math-0001.png\"></span><math altimg=\"urn:x-wiley:18638880:media:lpor202500187:lpor202500187-math-0001\" display=\"inline\" location=\"graphic/lpor202500187-math-0001.png\">\u0000<semantics>\u0000<mrow>\u0000<mn>61500</mn>\u0000<mspace width=\"1.66702pt\"></mspace>\u0000<mi>voxels</mi>\u0000<mspace width=\"1.66702pt\"></mspace>\u0000<msup>\u0000<mi mathvariant=\"normal\">s</mi>\u0000<mrow>\u0000<mo>−</mo>\u0000<mn>1</mn>\u0000</mrow>\u0000</msup>\u0000</mrow>\u0000$61500hspace*{0.1667em}mathrm{voxels}hspace*{0.1667em}{mathrm{s}}^{-1}$</annotation>\u0000</semantics></math> is achieved. Additionally, the capabilities and limits of the chosen approach are compared with rate-equation calculations.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"10 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619034","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
Visible Phase-Locked Microcombs Generation in High-Index Doped Silica Glass Micro-Ring Resonators
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-03-13 DOI: 10.1002/lpor.202401688
Yuhua Li, Yuan Yao, Guangkuo Li, Xiaotian Zhu, Xiang Wang, Roy R. Davidson, Brent E. Little, Jijun He, Sai T. Chu, Zhe Kang
{"title":"Visible Phase-Locked Microcombs Generation in High-Index Doped Silica Glass Micro-Ring Resonators","authors":"Yuhua Li, Yuan Yao, Guangkuo Li, Xiaotian Zhu, Xiang Wang, Roy R. Davidson, Brent E. Little, Jijun He, Sai T. Chu, Zhe Kang","doi":"10.1002/lpor.202401688","DOIUrl":"https://doi.org/10.1002/lpor.202401688","url":null,"abstract":"The development of integrated microcomb in the visible light region attracts considerable interest due to their potential applications ranging from bioimaging to quantum systems. However, apart from the handful of reports of phase-locked microcombs, the realization of a phase-locked visible microcomb in the visible region has so far been elusive. Here, visible phase-locked microcombs are experimentally demonstrated by frequency conversion of a near-infrared (NIR) energetic soliton crystal microcomb in a high-index doped silica glass (HDSG) integrated micro-ring resonator. Two-color (green-NIR) and even tri-color (green-red-NIR) phase-locked microcombs are produced by the combined Pockels (χ<sup>(2)</sup>) and Kerr (χ<sup>(3)</sup>) parametric processes. The results show that bright green and yellow microcombs can be alternately produced via scanning the continuous-wave pump laser over the C + L bands. The visible microcomb power is found to be simultaneously reinforced to their maximum when the NIR microcomb evolves within the soliton crystal state. The coordinated behavior of the power evolution of descending soliton staircase between the visible and NIR microcombs is also observed, indicating the joint soliton formation and phase locking characteristics. These findings confirm the HDSG micro-ring resonator a promising integrated solution for broadband and phase-locked visible microcomb generation linking the frequency from visible green to NIR.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"56 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619031","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
Tailoring Self-Trapped Exciton Emission in 0D Indium-Based Perovskites by Solvent-Induced Crystal Structure Engineering
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-03-12 DOI: 10.1002/lpor.202500005
Yusheng Xu, Ruijing Yang, Qiudong Duan, Zhenbeina Deng, Tianyu Guo, Minghui Su, XianChang Ning, YouGui Yang, Yu Zha, Dacheng Zhou, Yong Yang, Qi Wang, Yugeng Wen, Jianbei Qiu
{"title":"Tailoring Self-Trapped Exciton Emission in 0D Indium-Based Perovskites by Solvent-Induced Crystal Structure Engineering","authors":"Yusheng Xu, Ruijing Yang, Qiudong Duan, Zhenbeina Deng, Tianyu Guo, Minghui Su, XianChang Ning, YouGui Yang, Yu Zha, Dacheng Zhou, Yong Yang, Qi Wang, Yugeng Wen, Jianbei Qiu","doi":"10.1002/lpor.202500005","DOIUrl":"https://doi.org/10.1002/lpor.202500005","url":null,"abstract":"0D indium-based all-inorganic metal halide perovskites offer great potential for multifunctional applications but face the challenges of poor structural adjustability and an incomplete dynamic picture of self-trapped exciton (STE) emissions. Here, a novel 0D Cs<sub>4</sub>InCl<sub>7</sub> single crystal is developed as a solvation bridge for phase transformations to either 0D Cs<sub>2</sub>InCl<sub>5</sub>·H<sub>2</sub>O via water or into 0D Cs<sub>3</sub>InCl<sub>6</sub> by methanol. The diversified crystal structures not only enrich the emission colors but also the difference in the coordination number and symmetry of Cs<sup>+</sup>, laying foundations for comprehending the influence of A-site on STE emissions. Steady-state and transient spectroscopy together with density functional theory simulations, reveal that low coordination geometry and charge symmetry of octahedron facilitate excited state distortions, leading to strong second-order Jahn-Teller (SOJT) effect for large Stokes shift of STE emissions. Multicolor tuning in Sb<sup>3+</sup>-doped Cs<sub>4</sub>InCl<sub>7</sub> under solvent and heat stimuli enables the extended optical applications in anti-counterfeiting, temperature sensing, and solvent sensors. The work offers an improved understanding of SOJT manipulation via atomic engineering of A-site in 0D lead-free perovskites and sheds light on their broad practical applications.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"32 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143600042","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
Full-Space Spin-Controlled Four-Channel Metalens With Equal Power Distribution and Broad Bandwidth
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-03-12 DOI: 10.1002/lpor.202401843
Xiaoluo He, Bowen Ren, Ka Fai Chan, Alex M. H. Wong
{"title":"Full-Space Spin-Controlled Four-Channel Metalens With Equal Power Distribution and Broad Bandwidth","authors":"Xiaoluo He, Bowen Ren, Ka Fai Chan, Alex M. H. Wong","doi":"10.1002/lpor.202401843","DOIUrl":"https://doi.org/10.1002/lpor.202401843","url":null,"abstract":"A novel method is proposed to achieve a multifunctional full-space metalens supporting high power efficiency, broadband operation and large design flexibility for four spin-controlled output channels. A full-space meta-atom comprising an ultra-thin printed circuit board layer and a low-cost 3D-printed dielectric block are introduced. This meta-atom combines the geometric and propagation phase phenomena to divide an incident circularly-polarized wave into four equi-powered output channels (left- and right-polarized reflected waves and left- and right-polarized transmitted waves). The output waveforms can be stipulated with large flexibility by tuning the meta-atoms. The usage of non-resonant phase-tuning mechanisms allows the resultant metalenses to be broadband and power efficient. Two full-space metalenses are demonstrated using this unit cell, where the four output channels carry different combinations of orbital angular momenta and focal lengths. Simulation and experimental results show that, over a broad bandwidth of 50–70 GHz (33&lt;span data-altimg=\"/cms/asset/6fd3276b-c4c5-47d6-b992-58e05aa6a1f5/lpor202401843-math-0001.png\"&gt;&lt;/span&gt;&lt;mjx-container ctxtmenu_counter=\"126\" ctxtmenu_oldtabindex=\"1\" jax=\"CHTML\" role=\"application\" sre-explorer- style=\"font-size: 103%; position: relative;\" tabindex=\"0\"&gt;&lt;mjx-math aria-hidden=\"true\" location=\"graphic/lpor202401843-math-0001.png\"&gt;&lt;mjx-semantics&gt;&lt;mjx-mo data-semantic- data-semantic-role=\"unknown\" data-semantic-speech=\"percent sign\" data-semantic-type=\"punctuation\"&gt;&lt;mjx-c&gt;&lt;/mjx-c&gt;&lt;/mjx-mo&gt;&lt;/mjx-semantics&gt;&lt;/mjx-math&gt;&lt;mjx-assistive-mml display=\"inline\" unselectable=\"on\"&gt;&lt;math altimg=\"urn:x-wiley:18638880:media:lpor202401843:lpor202401843-math-0001\" display=\"inline\" location=\"graphic/lpor202401843-math-0001.png\" xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;semantics&gt;&lt;mo data-semantic-=\"\" data-semantic-role=\"unknown\" data-semantic-speech=\"percent sign\" data-semantic-type=\"punctuation\"&gt;%&lt;/mo&gt;$%$&lt;/annotation&gt;&lt;/semantics&gt;&lt;/math&gt;&lt;/mjx-assistive-mml&gt;&lt;/mjx-container&gt;), all channels realize the pre-designed functionalities with high mode purities and achieve an average power efficiency of 90&lt;span data-altimg=\"/cms/asset/623476c8-c985-467a-83e6-6ae0fa2ae5a9/lpor202401843-math-0002.png\"&gt;&lt;/span&gt;&lt;mjx-container ctxtmenu_counter=\"127\" ctxtmenu_oldtabindex=\"1\" jax=\"CHTML\" role=\"application\" sre-explorer- style=\"font-size: 103%; position: relative;\" tabindex=\"0\"&gt;&lt;mjx-math aria-hidden=\"true\" location=\"graphic/lpor202401843-math-0002.png\"&gt;&lt;mjx-semantics&gt;&lt;mjx-mo data-semantic- data-semantic-role=\"unknown\" data-semantic-speech=\"percent sign\" data-semantic-type=\"punctuation\"&gt;&lt;mjx-c&gt;&lt;/mjx-c&gt;&lt;/mjx-mo&gt;&lt;/mjx-semantics&gt;&lt;/mjx-math&gt;&lt;mjx-assistive-mml display=\"inline\" unselectable=\"on\"&gt;&lt;math altimg=\"urn:x-wiley:18638880:media:lpor202401843:lpor202401843-math-0002\" display=\"inline\" location=\"graphic/lpor202401843-math-0002.png\" xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;semantics&gt;&lt;mo data-semantic-=\"\" data-semantic-role=\"unknown\" data-sem","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"56 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143600018","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
Unveiling the Dynamics of Frenkel Defects in Fluoride Materials for X-Ray-Induced Persistent Luminescence and Advanced Imaging Applications
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-03-11 DOI: 10.1002/lpor.202500092
Mingxing Li, Wenwu You, Shuanglai Liu, Jiacai Li, Huafang Zhang, Gencai Pan, Yanli Mao
{"title":"Unveiling the Dynamics of Frenkel Defects in Fluoride Materials for X-Ray-Induced Persistent Luminescence and Advanced Imaging Applications","authors":"Mingxing Li, Wenwu You, Shuanglai Liu, Jiacai Li, Huafang Zhang, Gencai Pan, Yanli Mao","doi":"10.1002/lpor.202500092","DOIUrl":"https://doi.org/10.1002/lpor.202500092","url":null,"abstract":"The persistent luminescence (PersL) induced by X-rays in fluoride materials has garnered widespread application within the field of optoelectronics. However, the complexity of the trap systems in multi-component fluoride materials has impeded further exploration into PersL properties. Here, a compound consisting solely of fluoride and lanthanide ions is focused on, which simplifies the revelation of the PersL mechanism under X-ray excitation. Experimental and theoretical results reveal that the PersL phenomenon is primarily attributed to the migration and recovery processes of interstitial fluoride ions within the lattice. Depending on the localization of the interstitial fluoride ions, the corresponding Frenkel defects can be classified into two distinct types: those that are readily self-recoverable near the matrix lanthanide ions and those that are less likely to self-recover near the dopant ions. The anomalous PersL phenomena observed at temperatures that do not correspond to the thermoluminescence spectra further substantiate the existence of these dynamic traps. Furthermore, leveraging the material's superior PersL properties, a scintillator film is prepared and utilized for X-ray PersL imaging in static displays. These findings provide a refined understanding of the PersL mechanism related to Frenkel defects, laying a solid foundation for the continued application and development of PersL technology.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"54 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143600040","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
Realization of a Photonic Higher‐Order Double‐Weyl Semimetal
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-03-11 DOI: 10.1002/lpor.202401631
Yingfeng Qi, Ziyao Wang, Yan Meng, Linyun Yang, Bei Yan, Zhen Gao
{"title":"Realization of a Photonic Higher‐Order Double‐Weyl Semimetal","authors":"Yingfeng Qi, Ziyao Wang, Yan Meng, Linyun Yang, Bei Yan, Zhen Gao","doi":"10.1002/lpor.202401631","DOIUrl":"https://doi.org/10.1002/lpor.202401631","url":null,"abstract":"Higher‐order Weyl semimetal (HOWSM) with coexisting 2D topological surface states and 1D topological hinge states establishes the fundamental connection between the Weyl physics and higher‐order topology. However, existing experimental demonstrations of HOWSM have primarily focused on Weyl nodes with chiral charges of ±1. In this work, based on the space group symmetry, a photonic higher‐order double‐Weyl semimetal (HODWSM) with larger chiral charges is theoretically designed and experimentally realized in a 3D photonic metamaterial. It is demonstrated that this photonic HODWSM exhibits a single pair of quadratic double‐Weyl points with chiral charges of ±2 in the plane, supporting nontrivial higher‐order band topology in the remaining <jats:italic>k<jats:sub>z</jats:sub></jats:italic> planes and achieving unprecedentedly long hinge Fermi arc traversing the entire Brillouin zone. This work extends the research scope of HOWSM and offers an ideal photonic platform for exploring higher‐order Weyl physics.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"73 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143599650","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
Terabit‐Per‐Second Multidimensional Multiplexing Photonic Integrated Circuit in Lithium Niobate on Insulator
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-03-11 DOI: 10.1002/lpor.202402235
Yongheng Jiang, Pu Zhang, Mingrui Yuan, Huifu Xiao, Liheng Wang, Binjie Wang, Mei Xian Low, Aditya Dubey, Thach Giang Nguyen, Daqiang Gao, Guanghui Ren, Yong Zhang, Yikai Su, Arnan Mitchell, Yonghui Tian
{"title":"Terabit‐Per‐Second Multidimensional Multiplexing Photonic Integrated Circuit in Lithium Niobate on Insulator","authors":"Yongheng Jiang, Pu Zhang, Mingrui Yuan, Huifu Xiao, Liheng Wang, Binjie Wang, Mei Xian Low, Aditya Dubey, Thach Giang Nguyen, Daqiang Gao, Guanghui Ren, Yong Zhang, Yikai Su, Arnan Mitchell, Yonghui Tian","doi":"10.1002/lpor.202402235","DOIUrl":"https://doi.org/10.1002/lpor.202402235","url":null,"abstract":"The surge in data driven by socio‐economic development has presented enormous challenges to data centers, catalyzing the swift advancement of optical interconnect technology. Advanced optical multiplexers and modulators are increasingly applied to optical interconnects in data centers, offering robust solutions to mitigate the impact of this data deluge. In this paper, a multidimensional multiplexing photonic integrated circuit in lithium niobate on an insulator is proposed and demonstrated involving hybrid multiplexing technology in wavelength, polarization, and mode dimensions. Moreover, the integration of eight racetrack‐resonator modulators with the multidimensional multiplexer is achieved successfully, enabling high‐speed data transmission at a rate of 0.96 Tbps (8 × 120 Gbps). The fabricated photonic integrated circuit is expected to meet the escalating demands of future data‐intensive applications with a scalable and high‐performance solution.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"21 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143599651","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
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