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Transparent and Conformal Directional Janus Metasurface with Joint Amplitude and Phase Modulations 具有联合振幅和相位调制的透明共形定向两面曲面
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-05-19 DOI: 10.1002/lpor.202500340
Lei Bao, Le Le Zhu, Xue Yun Guo, Liang Wei Wu, Huan Zhang, Pengying Chang, Yi-Yang Xie, Rui Yuan Wu, Tie Jun Cui
{"title":"Transparent and Conformal Directional Janus Metasurface with Joint Amplitude and Phase Modulations","authors":"Lei Bao, Le Le Zhu, Xue Yun Guo, Liang Wei Wu, Huan Zhang, Pengying Chang, Yi-Yang Xie, Rui Yuan Wu, Tie Jun Cui","doi":"10.1002/lpor.202500340","DOIUrl":"https://doi.org/10.1002/lpor.202500340","url":null,"abstract":"To address the growing demands of modern communication systems, the design of integrated multifunctional metasurfaces has become a key focus of research. Janus metasurface enables directional multiplexing by providing independent phase responses to electromagnetic waves from different incident directions, achieving multifunctional integration in space. Here, a novel class of Janus metasurfaces is proposed with optical transparency, capable of achieving asymmetric transmissions through precise amplitude-phase joint modulations. The proposed Janus metasurfaces enable directional holographic imaging in the planar state and support advanced asymmetric electromagnetic functions in the conformal state, such as multifocal convergence and multibeam deflection. In experiments, the fabricated samples demonstrate excellent alignment with design objectives, maintaining optical transparency at ≈38.5%. It is believed that the proposed conformal Janus metasurfaces with unique transparency and asymmetric transmission control capabilities have great potential to demonstrate diverse and valuable applications in specific environments.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"33 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144088071","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
Fabrication and Performance Optimization of CsPbBr3/SrTiO3 Single-Crystal Heterojunction Photodetectors for Optical Communication Systems 光通信系统CsPbBr3/SrTiO3单晶异质结光电探测器的制备与性能优化
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-05-19 DOI: 10.1002/lpor.202402213
Lujia Cong, Mingyue Tan, Haiying Cui, Jianjun Chen, Xuhu Wang, Xinbo Chu, Chunmei Wu, Haitao Zhou
{"title":"Fabrication and Performance Optimization of CsPbBr3/SrTiO3 Single-Crystal Heterojunction Photodetectors for Optical Communication Systems","authors":"Lujia Cong, Mingyue Tan, Haiying Cui, Jianjun Chen, Xuhu Wang, Xinbo Chu, Chunmei Wu, Haitao Zhou","doi":"10.1002/lpor.202402213","DOIUrl":"https://doi.org/10.1002/lpor.202402213","url":null,"abstract":"Due to their excellent photoelectric activity, material stability, and low lattice mismatch, halide perovskite CsPbBr<sub>3</sub> and oxide perovskite SrTiO<sub>3</sub> are ideal candidates for constructing heterojunction photodetector diodes. However, the realization of such all-single-crystal, high-performance heterojunctions remains challenging. Herein, an all-single-crystal CsPbBr<sub>3</sub>/SrTiO<sub>3</sub> heterojunction is successfully fabricated at low temperatures based on a surface reconstruction method. The effects of Nd doping and graphene electrodes on the optoelectronic properties of the device are investigated. Benefiting from the excellent heterojunction structure, enhanced built-in electric field, and van der Waals contact, the device exhibits significantly improved rectification characteristics, photoresponsivity, and light-to-dark ratio. The CsPbBr<sub>3</sub>/Nb:SrTiO<sub>3</sub>/Graphene device achieves a responsivity of up to 1.1 mA W<sup>−1</sup> and a response time of only 0.29 µs under 0 V bias. By integrating the device into an optical communication system using embedded technology, byte transmission is successfully realized, demonstrating the practical application potential of single-crystal devices as signal receivers in optical communication systems.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"14 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144088088","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
Resonant 2D Wavefront Manipulation via Birefringent Guided-Mode Resonances in Dielectric Phase Gradient Metasurfaces 介电相位梯度超表面中双折射导模共振的二维波前操纵
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-05-19 DOI: 10.1002/lpor.202500339
Yinchang Liao, Meng Xia, Yuefeng Wang, Yuhua Chen, Xingwang Zhang
{"title":"Resonant 2D Wavefront Manipulation via Birefringent Guided-Mode Resonances in Dielectric Phase Gradient Metasurfaces","authors":"Yinchang Liao, Meng Xia, Yuefeng Wang, Yuhua Chen, Xingwang Zhang","doi":"10.1002/lpor.202500339","DOIUrl":"https://doi.org/10.1002/lpor.202500339","url":null,"abstract":"Phase gradient metasurfaces based on guided-mode resonances have emerged as a promising route to manipulate optical wavefronts with high resolutions in both spatial and spectral dimensions. However, optical responses in these resonant metasurfaces generally rely on the coherent interaction among many adjacent meta-atoms across an extended spatial region, so that the neighboring interaction varies with the geometric parameters of nearby meta-atoms, leading to distortion and low efficiency in the wavefront manipulation. In this work, the experimental demonstration is presented of dielectric phase gradient metasurfaces enabled by birefringent guided-mode resonances, which are utilized to realize 2D wavefront manipulations such as anomalous beam deflection, beam focusing, and vortex beam generation. In this configuration, the two-fold mirror symmetry of meta-atoms enables birefringent guided-mode resonances, giving rise to efficient cross-polarization conversion and complete 2<i>π</i> phase coverage via the geometric phase scheme with stable neighboring interactions. The results provide an effective strategy for realizing robust neighboring coupling effects, facilitating the development of resonant phase gradient metasurfaces.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"2 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144088089","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
Achieving Single‐Phased Full Visible Spectrum Broadband White Emission in Ag⁺, Bi3⁺, and Sb3⁺ Tri‐Doped Cs₂NaLuCl₆ Double Perovskite Phosphor 在Ag +、Bi3 +和Sb3 +三掺杂c2nalucl₆双钙钛矿荧光粉中实现单相全可见光谱宽带白光发射
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-05-19 DOI: 10.1002/lpor.202500728
Changheng Chen, Ruibo Gao, Jiwen Chang, Renze Chen, Jinmeng Xiang, Xianju Zhou, Chongfeng Guo
{"title":"Achieving Single‐Phased Full Visible Spectrum Broadband White Emission in Ag⁺, Bi3⁺, and Sb3⁺ Tri‐Doped Cs₂NaLuCl₆ Double Perovskite Phosphor","authors":"Changheng Chen, Ruibo Gao, Jiwen Chang, Renze Chen, Jinmeng Xiang, Xianju Zhou, Chongfeng Guo","doi":"10.1002/lpor.202500728","DOIUrl":"https://doi.org/10.1002/lpor.202500728","url":null,"abstract":"Single‐phased white‐light phosphors can overcome the issues of re‐absorption and color drift in phosphor‐converted white light‐emitting diodes, while achieving the high efficiency full‐spectrum white light phosphors remains an inescapability challenge toward the high‐quality illumination. Herein, the single‐phased full visible spectrum white phosphors are developed by doping Bi<jats:sup>3+</jats:sup> and Sb<jats:sup>3+</jats:sup> into Cs<jats:sub>2</jats:sub>NaLuCl<jats:sub>6</jats:sub>: Ag<jats:sup>+</jats:sup>. The Cs<jats:sub>2</jats:sub>NaLuCl<jats:sub>6</jats:sub>: 5%Ag<jats:sup>+</jats:sup>, 5%Bi<jats:sup>3+</jats:sup>, 1%Sb<jats:sup>3+</jats:sup> performs an ultra‐wide white emission covering the whole visible light region (400–800 nm) with about 305 nm full width at half maximum and 70% quantum yield, whose spectrum is consisted of blue band of Sb<jats:sup>3+</jats:sup> (<jats:sup>3</jats:sup><jats:italic>P</jats:italic><jats:sub>1</jats:sub> → <jats:sup>1</jats:sup><jats:italic>S</jats:italic><jats:sub>0</jats:sub>) at 455 nm and orange‐red band of Ag<jats:sup>+</jats:sup> (<jats:sup>3</jats:sup><jats:italic>D</jats:italic><jats:sub>1</jats:sub> → <jats:sup>1</jats:sup><jats:italic>S</jats:italic><jats:sub>0</jats:sub>) at 611 nm. The warm white LED with low color temperature (3656 K) and high color rending index (95) can be fabricated by the combination of 365 nm chip with the prepared phosphors. Meanwhile the electroluminescence spectrum of LED possesses high spectrum resemblance with absorption band of photosynthetic pigments. The prepared white light phosphors exhibit great application potential in white light and plant growth illumination fields.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"121 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144088092","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
Ag Doping Triggered Electronic Structural Engineering in Halide Quadruple Perovskite Toward Near-Unity Luminescence Quantum Yield 银掺杂引发卤化物四重钙钛矿接近统一发光量子产率的电子结构工程
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-05-19 DOI: 10.1002/lpor.202500645
Dengbang Zhao, Zhipeng Chen, Meng Wang, Mochen Jia, Jibin Zhang, Linyuan Lian, Yanbin Han, Xu Chen, Zhuangzhuang Ma, Ying Liu, Zhifeng Shi
{"title":"Ag Doping Triggered Electronic Structural Engineering in Halide Quadruple Perovskite Toward Near-Unity Luminescence Quantum Yield","authors":"Dengbang Zhao, Zhipeng Chen, Meng Wang, Mochen Jia, Jibin Zhang, Linyuan Lian, Yanbin Han, Xu Chen, Zhuangzhuang Ma, Ying Liu, Zhifeng Shi","doi":"10.1002/lpor.202500645","DOIUrl":"https://doi.org/10.1002/lpor.202500645","url":null,"abstract":"Ion doping is an effective strategy to regulate the optical performance in metal halide perovskites for desirable light emission manipulations. In this work, a Mn<sup>2+</sup> and Ag<sup>+</sup> co-doping strategy is utilized to improve the luminescence in Cs<sub>4</sub>CdBi<sub>2</sub>Cl<sub>12</sub> quadruple perovskite. Mn<sup>2+</sup> and Ag<sup>+</sup> ions are proven to be incorporated into Cs<sub>4</sub>CdBi<sub>2</sub>Cl<sub>12</sub> lattice. Mn<sup>2+</sup> ions occupy Cd<sup>2+</sup> sites and Ag<sup>+</sup> ions occupy Cd<sup>2+</sup> sites or vacancies. The alloyed Mn<sup>2+</sup> ions bring efficient orange-red luminescence attributed to the energy transfer process from the host to Mn<sup>2+</sup> ions. A small amount of Ag<sup>+</sup> doping can optimize the band structure and increase the exciton binding energy, thus promoting efficient radiative recombination from d–d transition of Mn<sup>2+</sup> ions and boosting the PLQY up to 94.6%. Furthermore, Cs<sub>4</sub>Cd<sub>0.75</sub>Mn<sub>0.25</sub>Bi<sub>2</sub>Cl<sub>12</sub>:1.5%Ag<sup>+</sup> show good phase and emission stability in ambient environment and is employed in white light-emitting diodes with commercial blue and green phosphors on a near-ultraviolet LED chip. This work provides insights for understanding the composition-structure-property relationship in vacancy-ordered quadruple perovskites and designing highly efficient luminescent lead-free metal halides for solid-state light emitting applications.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"58 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144088070","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
A Novel Yellow Phosphor(Ba3Sc2(BO3)4: Eu2+) Suitable for Full‐Spectrum Lighting, Featuring Tunable Photoluminescence and Enhanced Luminous Thermal Stability 一种适用于全光谱照明的新型黄色荧光粉(Ba3Sc2(BO3)4: Eu2+),具有可调谐的光致发光和增强的发光热稳定性
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-05-15 DOI: 10.1002/lpor.202402304
Pan Liang, Hongshu Zhang, Junfeng Wang, Yingyiing Xue, Saying Li, Xin Li, Ziyu Wan, Junxian Luo, Lianqing Li, Hongsheng Huang, Zhihong Liu
{"title":"A Novel Yellow Phosphor(Ba3Sc2(BO3)4: Eu2+) Suitable for Full‐Spectrum Lighting, Featuring Tunable Photoluminescence and Enhanced Luminous Thermal Stability","authors":"Pan Liang, Hongshu Zhang, Junfeng Wang, Yingyiing Xue, Saying Li, Xin Li, Ziyu Wan, Junxian Luo, Lianqing Li, Hongsheng Huang, Zhihong Liu","doi":"10.1002/lpor.202402304","DOIUrl":"https://doi.org/10.1002/lpor.202402304","url":null,"abstract":"Currently, the development of phosphors for full‐spectrum lighting is a prominent research area in the field of illumination. In this study, a novel and highly efficient yellow phosphor (Ba<jats:sub>3</jats:sub>Sc<jats:sub>2</jats:sub>(BO<jats:sub>3</jats:sub>)<jats:sub>4</jats:sub>: Eu<jats:sup>2+</jats:sup>, BSBO: Eu<jats:sup>2+</jats:sup>) is synthesized via the high‐temperature solid‐phase method for the first time. The excitation spectrum of this phosphor ranges from 225 to 480 nm, with a peak at 365 nm. The emission spectrum ranges from 450 to 720 nm, peaking at 555 nm, with a full width at half maximum (<jats:italic>FWHM</jats:italic>) of 113 nm. BSBO: Eu<jats:sup>2+</jats:sup> shows outstanding quantum efficiencies (IQE = 94.3%, EQE = 33.3%). The emission spectrum and luminescent color can be tuned through cation substitution. The thermal stability of BSBO: Eu<jats:sup>2+</jats:sup> is significantly enhanced by the partial replacement of Sc ions with smaller Al and Ga ions. To illustrate its practical application potential in full‐spectrum lighting, BSBO: Eu<jats:sup>2+</jats:sup> is combined with commercially available blue and red phosphors, resulting in a WLED warm light source with an outstanding color rendering index (<jats:italic>R</jats:italic>a) of 94.4% and a correlated color temperature (CCT) of 3865 K. These results highlight the substantial potential of BSBO: Eu<jats:sup>2+</jats:sup> in full‐spectrum lighting applications.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"32 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143979907","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
Photonic Floquet–Bloch Oscillations Dominated by Floquet Gauge 由Floquet规范控制的光子Floquet - bloch振荡
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-05-15 DOI: 10.1002/lpor.202402223
Yuan Li, Zhen Zhang, Juncheng Gong, Xuewen Shu, Xiankai Sun
{"title":"Photonic Floquet–Bloch Oscillations Dominated by Floquet Gauge","authors":"Yuan Li, Zhen Zhang, Juncheng Gong, Xuewen Shu, Xiankai Sun","doi":"10.1002/lpor.202402223","DOIUrl":"https://doi.org/10.1002/lpor.202402223","url":null,"abstract":"Bloch oscillations, a fundamental phenomenon of wave packet revival, are widely used as a powerful tool in precise measurement. The conventional Bloch oscillations exhibit symmetric transport with respect to their half period. Here, a new type of Bloch oscillations (namely, asymmetric Floquet–Bloch oscillations) whose evolution is biased along the evolution dimension is proposed and visually observed. Despite their asymmetric transport, the excited wave packets exhibit perfect revival after propagating over any integer multiples of the Floquet–Bloch oscillation period. This suggests a fundamentally new mechanism of wave packet revival under the half-period evolution of translational antisymmetry. The asymmetric Floquet–Bloch oscillations are experimentally confirmed with direct visualization of their biased light broadening. These findings offer new insights for wave packet revival and can be applied to many rapidly developing fields, including wave controlling, signal processing, and precision metrology.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"129 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144000647","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
Near‐Infrared Laser at Room Temperature Based on Tin Halide Perovskite from 3D to Quasi‐2D 基于卤化锡钙钛矿的室温近红外激光从三维到准二维
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-05-14 DOI: 10.1002/lpor.202500006
Shudi Lu, Jingteng Ma, Runkang Lin, Keqian Dong, Dong Hu, Jing Zhao, Xiaobao Li, Shizhong Yue, Kong Liu, Zhijie Wang, Shengchun Qu
{"title":"Near‐Infrared Laser at Room Temperature Based on Tin Halide Perovskite from 3D to Quasi‐2D","authors":"Shudi Lu, Jingteng Ma, Runkang Lin, Keqian Dong, Dong Hu, Jing Zhao, Xiaobao Li, Shizhong Yue, Kong Liu, Zhijie Wang, Shengchun Qu","doi":"10.1002/lpor.202500006","DOIUrl":"https://doi.org/10.1002/lpor.202500006","url":null,"abstract":"Metal halide perovskite materials have demonstrated considerable potential as gain media for laser diodes. However, current research on perovskite lasers predominantly focuses on the visible light region. The development of near‐infrared perovskite lasers with emission wavelengths beyond 850 nm remains a significant challenge. Herein, fully solution‐processed near‐infrared perovskite lasers with tunable emission wavelengths spanning from 872 to 948 nm are presented. By controlling the crystallization time of the FASnI<jats:sub>3</jats:sub> perovskite films, near‐infrared lasing at room temperature without external cavities is realized. Through modulating the dimensions of the perovskite films via the incorporation of a large cation PEA<jats:sup>+</jats:sup>, quasi‐2D perovskites with adjustable lasing wavelengths and enhanced stability are successfully developed. These findings provide a novel approach for the fabrication of near‐infrared lasers, which will facilitate the advancement of lead‐free perovskite lasers.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"27 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143945963","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
Exploiting Rigid Inorganic π-Conjugated Units and Deprotonatable Organic π-Conjugated Dimers for Enhanced Linear and Nonlinear Optical Properties 利用刚性无机π共轭单位和可去质子化有机π共轭二聚体增强线性和非线性光学性质
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-05-12 DOI: 10.1002/lpor.202500368
Yanqiu Zhang, Qingran Ding, Yanqiang Li, Xianyu Song, Weiqi Huang, Yang Zhou, Qingpeng Shao, Zhiyong Bai, Sangen Zhao, Junhua Luo
{"title":"Exploiting Rigid Inorganic π-Conjugated Units and Deprotonatable Organic π-Conjugated Dimers for Enhanced Linear and Nonlinear Optical Properties","authors":"Yanqiu Zhang, Qingran Ding, Yanqiang Li, Xianyu Song, Weiqi Huang, Yang Zhou, Qingpeng Shao, Zhiyong Bai, Sangen Zhao, Junhua Luo","doi":"10.1002/lpor.202500368","DOIUrl":"https://doi.org/10.1002/lpor.202500368","url":null,"abstract":"The design of nonlinear optical (NLO) crystals has captivated the interest of chemists, materials scientists, and physicists for many years. The organic–inorganic hybrid <i>π</i>–<i>π</i> stacking is an effective method to design high-performance NLO crystals. Herein, rigid inorganic π-conjugated units (CO<sub>3</sub> and NO<sub>3</sub>, the symbol is π) and organic π-conjugated dimers (biguanide group, the symbol is π^) are employed for stacking, resulting in the compounds of NH[C(NH<sub>2</sub>)<sub>2</sub>]<sub>2</sub>(NO<sub>3</sub>)<sub>2</sub> and {N[C(NH<sub>2</sub>)<sub>2</sub>]<sub>2</sub>}<sub>2</sub>CO<sub>3</sub> through <i>π-</i>-<i>π</i>^ interaction. Both compounds exhibit strong linear optical properties—transparency: 318 nm and birefringence: 0.122@550 nm for the former; transparency: 258 nm and birefringence: 0.232@550 nm for the latter—and NLO effects (3.5 × KH<sub>2</sub>PO<sub>4</sub> (KDP) and 5 × KDP, respectively). Theoretical calculations reveal that strong linear and NLO properties mainly derive from the interactions of multiple hydrogen bonding and <i>π-</i>-<i>π</i>^ stacking. Interestingly, deprotonatable N[C(NH<sub>2</sub>)<sub>2</sub>]<sub>2</sub> organic π-conjugated dimers demonstrate higher polarizability anisotropy and hyperpolarizability than their protonated NH[C(NH<sub>2</sub>)<sub>2</sub>]<sub>2</sub> counterparts, resulting in enhanced macroscopic linear and NLO performance. This offers an opportunity to understand <i>π</i>–<i>π</i> stacking and provides a new strategy for enhancing the linear and NLO properties of the material.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"2 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143933231","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 Wavefront Manipulations Based on Misalignment Resilient Cascaded Metasurfaces 基于错位弹性级联元表面的矢量波前处理
IF 11 1区 物理与天体物理
Laser & Photonics Reviews Pub Date : 2025-05-12 DOI: 10.1002/lpor.202500309
Shifei Zhang, Peijin Li, Xue Zhang, Qunshuo Wei, Xin Li, Bo Wang, Junjie Li, Yongtian Wang, Lingling Huang
{"title":"Vectorial Wavefront Manipulations Based on Misalignment Resilient Cascaded Metasurfaces","authors":"Shifei Zhang, Peijin Li, Xue Zhang, Qunshuo Wei, Xin Li, Bo Wang, Junjie Li, Yongtian Wang, Lingling Huang","doi":"10.1002/lpor.202500309","DOIUrl":"https://doi.org/10.1002/lpor.202500309","url":null,"abstract":"Due to spatial symmetry constraints, existing single-layer metasurface schemes suffer from reduced parallel control capabilities and information capacity in their Jones matrices. Recently, bilayer metasurface strategies have enabled significant enhancements in polarization and nonreciprocal modulations, facilitating applications in holographic display and optical communications. However, a more intuitive Jones matrix analysis is needed, and the current pixel-wise design of bilayer metasurfaces necessitates precise nanofabrication and alignment, leading to increased costs and technical challenges. In this paper, cascade metasurfaces design strategies for vectorial wavefront manipulations with misalignment robustness are investigated. First, an intuitive visualization method for the Jones matrix is established, based on the analysis of polarization eigenstates, polarization dichroism, and phase modulations. On this basis, a pixel-wise design approach of cascaded metasurfaces aimed at sophisticated vectorial spatial light modulation is proposed. This approach achieves assembly tolerances more than one order of magnitude higher than those of the control group, by employing a specialized spatial frequency optimization. Specifically, both the cascaded and individual metasurfaces are predesigned to serve distinct functions. Multichannel vectorial wavefront multiplexing and polarization encryption are all realized. It is believed that the work offers valuable insights into sophisticated polarization modulation techniques and the cost-effective design of multilayer metasurfaces.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"123 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143940280","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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