Laser & Photonics Reviews最新文献

{"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}

{"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⁽²⁾) and Kerr (χ⁽³⁾) 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}

{"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 Cs₄InCl₇ single crystal is developed as a solvation bridge for phase transformations to either 0D Cs₂InCl₅·H₂O via water or into 0D Cs₃InCl₆ by methanol. The diversified crystal structures not only enrich the emission colors but also the difference in the coordination number and symmetry of Cs⁺, 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 Sb³⁺-doped Cs₄InCl₇ 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}

{"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}

{"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}

{"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}

{"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}

{"title":"Exceptionally High Nonlinear Optical Response in Two-dimensional Type II Dirac Semimetal Nickel Di-Telluride (NiTe2)","authors":"Saswata Goswami, Caique Campos de Oliveira, Bruno Ipaves, Preeti Lata Mahapatra, Varinder Pal, Suman Sarkar, Pedro A. S. Autreto, Samit K. Ray, Chandra Sekhar Tiwary","doi":"10.1002/lpor.202400999","DOIUrl":"https://doi.org/10.1002/lpor.202400999","url":null,"abstract":"Nickel ditelluride (NiTe&lt;sub&gt;2&lt;/sub&gt;) is a newly identified Type-II Dirac semimetal, showing novel characteristics in electronic transport and optical experiments. This study explores the nonlinear optical properties of 2D NiTe&lt;sub&gt;2&lt;/sub&gt; using experimental and computational techniques (density functional theory-based approach). Few layered 2D-NiTe&lt;sub&gt;2&lt;/sub&gt; are synthesized using liquid phase exfoliation (LPE), which is characterized using X-ray diffraction technique, transmission electron, and atomic force microscopy. The nonlinear refractive index (&lt;span data-altimg=\"/cms/asset/c4eed6cb-d24f-44d1-a495-7e6b4d153dec/lpor202400999-math-0001.png\"&gt;&lt;/span&gt;&lt;mjx-container ctxtmenu_counter=\"3\" 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/lpor202400999-math-0001.png\"&gt;&lt;mjx-semantics&gt;&lt;mjx-msub data-semantic-children=\"0,1\" data-semantic- data-semantic-role=\"latinletter\" data-semantic-speech=\"n 2\" data-semantic-type=\"subscript\"&gt;&lt;mjx-mi data-semantic-annotation=\"clearspeak:simple\" data-semantic-font=\"italic\" data-semantic- data-semantic-parent=\"2\" data-semantic-role=\"latinletter\" data-semantic-type=\"identifier\"&gt;&lt;mjx-c&gt;&lt;/mjx-c&gt;&lt;/mjx-mi&gt;&lt;mjx-script style=\"vertical-align: -0.15em;\"&gt;&lt;mjx-mn data-semantic-annotation=\"clearspeak:simple\" data-semantic-font=\"normal\" data-semantic- data-semantic-parent=\"2\" data-semantic-role=\"integer\" data-semantic-type=\"number\" size=\"s\"&gt;&lt;mjx-c&gt;&lt;/mjx-c&gt;&lt;/mjx-mn&gt;&lt;/mjx-script&gt;&lt;/mjx-msub&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:lpor202400999:lpor202400999-math-0001\" display=\"inline\" location=\"graphic/lpor202400999-math-0001.png\" xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;semantics&gt;&lt;msub data-semantic-=\"\" data-semantic-children=\"0,1\" data-semantic-role=\"latinletter\" data-semantic-speech=\"n 2\" data-semantic-type=\"subscript\"&gt;&lt;mi data-semantic-=\"\" data-semantic-annotation=\"clearspeak:simple\" data-semantic-font=\"italic\" data-semantic-parent=\"2\" data-semantic-role=\"latinletter\" data-semantic-type=\"identifier\"&gt;n&lt;/mi&gt;&lt;mn data-semantic-=\"\" data-semantic-annotation=\"clearspeak:simple\" data-semantic-font=\"normal\" data-semantic-parent=\"2\" data-semantic-role=\"integer\" data-semantic-type=\"number\"&gt;2&lt;/mn&gt;&lt;/msub&gt;${n_2}$&lt;/annotation&gt;&lt;/semantics&gt;&lt;/math&gt;&lt;/mjx-assistive-mml&gt;&lt;/mjx-container&gt;) and third-order nonlinear susceptibility (&lt;span data-altimg=\"/cms/asset/5b10bcc4-09d5-4812-bd07-f8a733b0b4e0/lpor202400999-math-0002.png\"&gt;&lt;/span&gt;&lt;mjx-container ctxtmenu_counter=\"4\" 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/lpor202400999-math-0002.png\"&gt;&lt;mjx-semantics&gt;&lt;mjx-msubsup data-semantic-children=\"0,10,14\" data-semantic-collapsed=\"(16 (15 0 10) 14)\" data-semantic- data-semantic-role=\"greekletter\" data-semantic-speech=\"chi Su","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"15 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143582446","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":"Predicting VCSEL Emission Properties using Transformer Neural Networks","authors":"Aleksei Belonovskii, Elizaveta Girshova, Erkki Lähderanta, Mikhail Kaliteevski","doi":"10.1002/lpor.202401636","DOIUrl":"https://doi.org/10.1002/lpor.202401636","url":null,"abstract":"This study presents an innovative approach to predicting VCSEL emission characteristics using transformer neural networks. It is demonstrated how to modify the transformer neural network for applications in physics. The model achieved high accuracy in predicting parameters such as VCSEL's eigenenergy, quality factor, and threshold material gain, based on the laser's structure. This model trains faster and predicts more accurately compared to conventional neural networks. The transformer architecture also suitable for applications in other fields is proposed. A demo version is available for testing at https://abelonovskii.github.io/opto-transformer/.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"13 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143576112","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":"Full-Stokes Spectro-Polarimetric Camera with Full Spatial Resolution","authors":"Junren Wen, Shuaibo Feng, Yipeng Chen, Weiming Shi, Haiqi Gao, Yu Shao, Yuchuan Shao, Yueguang Zhang, Weidong Shen, Chenying Yang","doi":"10.1002/lpor.202401983","DOIUrl":"https://doi.org/10.1002/lpor.202401983","url":null,"abstract":"In recent years, intelligent optical sensing has seen rapid advancements driven by innovations in optoelectronics and AI-based algorithms. Specifically, spectro-polarimetric imaging (SPI) provides comprehensive insights by capturing both spectral and polarization information. In this paper, a spectro-polarimetric camera is presented that combines full-Stokes polarimetric imaging with multi-spectral imaging, achieving full spatial resolution across the visible wavelength range. Utilizing a CMOS-compatible micro-filter array and a deep unfolding network (GAP-net), the camera achieves a spatial resolution of 2016 × 2016 pixels, and successfully resolves 14.30 lines per millimeter, as verified by the USAF 1951 test chart. The camera achieves video-rate snapshot spectral imaging for polarization-insensitive scenarios and delivers exceptional spectral reconstruction fidelity for both static and dynamic scenes, with a remarkable fidelity of 99.53% for the standard color checker. For polarization-sensitive scenes, the full-Stokes parameters (<i>S</i>₀, <i>S</i>₁, <i>S</i>₂, <i>S</i>₃) are successfully restored, while maintaining the spectral precision. The proposed spectro-polarimetric camera holds significant importance for high-dimensional intelligent optical sensing and demonstrates considerable potential in remote sensing, autonomous driving, and surveillance.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"49 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143576159","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}