The robust excitonic effects in layered violet phosphorus (VP) render it an ideal platform for exploring photoluminescence (PL) at 2D nanoscale. However, limited research on its luminescent properties constrains understanding and hinders its potential future developments. Here, a detailed investigation into the thickness-dependent PL evolution in multilayer VP samples is conducted, where their thicknesses are precisely controlled through the oxygen plasma dry etching technique. The pronounced exciton-trion interaction determines the envelop of the PL spectra. And as etching time increases, leading to decreased sample's thickness, the spectra peak blue-shifts, and the exciton-trionic ratio changes. However, an unusual spectral oscillation in a small number (≈12%) of VP samples is discovered, despite the majority exhibiting the typical overall decaying tendency with decreasing thicknesses. Subsequent characterizations, especially through the cross-sectional high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM) images and the measurements of second harmonic generation (SHG), hint at the possible existence of an allotrope new-phase VP. First-principles calculations, in conjunction with energy band theory analysis, are employed to delve into and elucidate the spectral alterations resulting from carriers non-radiative/radiative recombination in the different materials. This work lays a foundation for understanding the luminescent properties of layered VPs.
{"title":"Thickness-Dependent Photoluminescence Oscillations in Layered Violet Phosphorus","authors":"Yuqing Liu, Shuaihao Tang, Xingang Zhao, Wei Xin, Yimeng Shi, Jiawei Jing, Weiheng Zhong, Yuanzheng Li, Yuwei Shan, Jinluo Cheng, Weizhen Liu, Haiyang Xu, Yichun Liu","doi":"10.1002/lpor.202401913","DOIUrl":"https://doi.org/10.1002/lpor.202401913","url":null,"abstract":"The robust excitonic effects in layered violet phosphorus (VP) render it an ideal platform for exploring photoluminescence (PL) at 2D nanoscale. However, limited research on its luminescent properties constrains understanding and hinders its potential future developments. Here, a detailed investigation into the thickness-dependent PL evolution in multilayer VP samples is conducted, where their thicknesses are precisely controlled through the oxygen plasma dry etching technique. The pronounced exciton-trion interaction determines the envelop of the PL spectra. And as etching time increases, leading to decreased sample's thickness, the spectra peak blue-shifts, and the exciton-trionic ratio changes. However, an unusual spectral oscillation in a small number (≈12%) of VP samples is discovered, despite the majority exhibiting the typical overall decaying tendency with decreasing thicknesses. Subsequent characterizations, especially through the cross-sectional high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM) images and the measurements of second harmonic generation (SHG), hint at the possible existence of an allotrope new-phase VP. First-principles calculations, in conjunction with energy band theory analysis, are employed to delve into and elucidate the spectral alterations resulting from carriers non-radiative/radiative recombination in the different materials. This work lays a foundation for understanding the luminescent properties of layered VPs.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"89 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143798306","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}
Xinyu Yang, Xiaotian Zhu, Caitlin Murray, Chawaphon Prayoonyong, Xingyuan Xu, Mengxi Tan, Roberto Morandotti, Brent E. Little, David J. Moss, Sai T. Chu, Bill Corcoran, Donglin Su
The deterministic generation of robust soliton combs is of great importance for the applications of optical frequency combs. As a novel form of microcomb, soliton crystals (SCs) have been shown to have advantages of easy generation, high conversion efficiency (CE), and thermal robustness. Here, the turnkey deterministic generation of a “palm-like” SC is reported with a free-running scheme. The robustness of turnkey SC generation is systematically examined in multiple aspects, including success rate, thermal robustness, and long-term stability. The experimental results reveal that our turnkey SC generation achieves nearly 100 success rate and power variations within 1.5 dB over 100 trials of 2 samples. Additionally, this state shows minimal sensitivity to thermal drifts and remains robust under environmental changes during a 4-hour laboratory test period.
{"title":"Turnkey Deterministic Soliton Crystal Generation","authors":"Xinyu Yang, Xiaotian Zhu, Caitlin Murray, Chawaphon Prayoonyong, Xingyuan Xu, Mengxi Tan, Roberto Morandotti, Brent E. Little, David J. Moss, Sai T. Chu, Bill Corcoran, Donglin Su","doi":"10.1002/lpor.202401687","DOIUrl":"https://doi.org/10.1002/lpor.202401687","url":null,"abstract":"The deterministic generation of robust soliton combs is of great importance for the applications of optical frequency combs. As a novel form of microcomb, soliton crystals (SCs) have been shown to have advantages of easy generation, high conversion efficiency (CE), and thermal robustness. Here, the turnkey deterministic generation of a “palm-like” SC is reported with a free-running scheme. The robustness of turnkey SC generation is systematically examined in multiple aspects, including success rate, thermal robustness, and long-term stability. The experimental results reveal that our turnkey SC generation achieves nearly 100<span data-altimg=\"/cms/asset/f157de3a-f97d-48a3-abbe-c59b0335cea9/lpor202401687-math-0001.png\"></span><mjx-container ctxtmenu_counter=\"2\" ctxtmenu_oldtabindex=\"1\" jax=\"CHTML\" role=\"application\" sre-explorer- style=\"font-size: 103%; position: relative;\" tabindex=\"0\"><mjx-math aria-hidden=\"true\" location=\"graphic/lpor202401687-math-0001.png\"><mjx-semantics><mjx-mo data-semantic- data-semantic-role=\"unknown\" data-semantic-speech=\"percent sign\" data-semantic-type=\"punctuation\"><mjx-c></mjx-c></mjx-mo></mjx-semantics></mjx-math><mjx-assistive-mml display=\"inline\" unselectable=\"on\"><math altimg=\"urn:x-wiley:18638880:media:lpor202401687:lpor202401687-math-0001\" display=\"inline\" location=\"graphic/lpor202401687-math-0001.png\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><semantics><mo data-semantic-=\"\" data-semantic-role=\"unknown\" data-semantic-speech=\"percent sign\" data-semantic-type=\"punctuation\">%</mo>$%$</annotation></semantics></math></mjx-assistive-mml></mjx-container> success rate and power variations within <span data-altimg=\"/cms/asset/3c374513-bf81-451c-8644-0b2192fda0db/lpor202401687-math-0002.png\"></span><mjx-container ctxtmenu_counter=\"3\" ctxtmenu_oldtabindex=\"1\" jax=\"CHTML\" role=\"application\" sre-explorer- style=\"font-size: 103%; position: relative;\" tabindex=\"0\"><mjx-math aria-hidden=\"true\" location=\"graphic/lpor202401687-math-0002.png\"><mjx-semantics><mjx-mo data-semantic- data-semantic-role=\"addition\" data-semantic-speech=\"plus or minus\" data-semantic-type=\"operator\"><mjx-c></mjx-c></mjx-mo></mjx-semantics></mjx-math><mjx-assistive-mml display=\"inline\" unselectable=\"on\"><math altimg=\"urn:x-wiley:18638880:media:lpor202401687:lpor202401687-math-0002\" display=\"inline\" location=\"graphic/lpor202401687-math-0002.png\" xmlns=\"http://www.w3.org/1998/Math/MathML\"><semantics><mo data-semantic-=\"\" data-semantic-role=\"addition\" data-semantic-speech=\"plus or minus\" data-semantic-type=\"operator\">±</mo>$pm$</annotation></semantics></math></mjx-assistive-mml></mjx-container>1.5 dB over 100 trials of 2 samples. Additionally, this state shows minimal sensitivity to thermal drifts and remains robust under environmental changes during a 4-hour laboratory test period.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"13 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143798381","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}
Jun Gou, Xiutao Yang, Hang Yu, He Yu, Yuchao Wei, Ziyi Fu, Laijiang Wei, Zexu Wang, Jiayue Han, Zhiming Wu, Yadong Jiang, Jun Wang
Conventional nm-scale Bi2O2Se-based near-infrared (NIR) photodetectors (PDs) exhibit commendable performance in terms of responsivity and response speed. Currently, the growing complexity of application scenarios requires NIR PDs to possess not only these fundamental functionalities but also the capability for NIR polarization detection and operation well under dim light conditions. Here, this study proposes the 2D ReS2/3D Bi2O2Se homo-heterojunction PD, which exhibits high photo-response speed, polarization-sensitive detection capabilities, and enhanced sensitivity in the NIR spectrum. In detail, a device constructed from µm-thick Bi2O2Se demonstrates polarization-sensitive photodetection at a wavelength of 850 nm, exhibiting a polarization ratio of 1.4 achieved by applied voltage modulation. Based on photogating effect and strong intrinsic absorption, the homo-heterojunction PD also can detect light power level of nW at 1310 nm, with a response speed of ≈10 µs and responsivity of 34.8 A W−1 at this wavelength. Additionally, this configuration exhibits an outstanding specific detectivity exceeding 1010 Jones within the wavelength range of 700 to 1310 nm. Even at a cut-off wavelength of 1550 nm, the device achieves a specific detectivity of ≈109 Jones. The ReS2/Bi2O2Se heterojunction NIR PD shows promise for advanced optoelectronic applications due to its high sensitivity and polarization-sensitive photodetection in NIR band.
{"title":"2D ReS2/3D Bi2O2Se Homo-Heterojunction Photodetector Toward Near-Infrared Polarization Sensitive Detection and High Sensitivity Communication","authors":"Jun Gou, Xiutao Yang, Hang Yu, He Yu, Yuchao Wei, Ziyi Fu, Laijiang Wei, Zexu Wang, Jiayue Han, Zhiming Wu, Yadong Jiang, Jun Wang","doi":"10.1002/lpor.202500577","DOIUrl":"https://doi.org/10.1002/lpor.202500577","url":null,"abstract":"Conventional nm-scale Bi<sub>2</sub>O<sub>2</sub>Se-based near-infrared (NIR) photodetectors (PDs) exhibit commendable performance in terms of responsivity and response speed. Currently, the growing complexity of application scenarios requires NIR PDs to possess not only these fundamental functionalities but also the capability for NIR polarization detection and operation well under dim light conditions. Here, this study proposes the 2D ReS<sub>2</sub>/3D Bi<sub>2</sub>O<sub>2</sub>Se homo-heterojunction PD, which exhibits high photo-response speed, polarization-sensitive detection capabilities, and enhanced sensitivity in the NIR spectrum. In detail, a device constructed from µm-thick Bi<sub>2</sub>O<sub>2</sub>Se demonstrates polarization-sensitive photodetection at a wavelength of 850 nm, exhibiting a polarization ratio of 1.4 achieved by applied voltage modulation. Based on photogating effect and strong intrinsic absorption, the homo-heterojunction PD also can detect light power level of nW at 1310 nm, with a response speed of ≈10 µs and responsivity of 34.8 A W<sup>−1</sup> at this wavelength. Additionally, this configuration exhibits an outstanding specific detectivity exceeding 10<sup>10</sup> Jones within the wavelength range of 700 to 1310 nm. Even at a cut-off wavelength of 1550 nm, the device achieves a specific detectivity of ≈10<sup>9</sup> Jones. The ReS<sub>2</sub>/Bi<sub>2</sub>O<sub>2</sub>Se heterojunction NIR PD shows promise for advanced optoelectronic applications due to its high sensitivity and polarization-sensitive photodetection in NIR band.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"32 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143806028","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}
Ze Wang, Kai Li, Chengxue Deng, Yu Zhang, Sur Lig, Hala Muji, Qixu Tian, Kefu Chao, Yu Wang, Dengfeng Peng
Mechanoluminescent (ML) materials are promising for applications in structural health monitoring, biomedicine, stress sensing, and stress distribution visualization due to their ability to emit light without external circuits. However, current ML materials face challenges, including limited luminescent colors, high raw material costs, toxicity, and lack of emissions in the invisible light spectrum. To overcome these challenges, Ca2P2O7 (CPO) is selected as the matrix material due to its excellent piezoelectric properties, low cost, and biocompatibility. CPO is doped with various luminescent ions (X, X = Ce3+, Eu2+/3+, Tb3+, Dy3+, Mn2+, Sm3+) to achieve the emission bands of CPO:X across a wide range of wavelengths including UV, blue, green, yellow and red. Unlike traditional trap-controlled ML materials, CPO:X does not require UV pre-irradiation and exhibits remarkable self-recovery properties. First-principles density functional theory (DFT) calculations confirmed that CPO is an ideal matrix for self-recovering ML materials. Based on these properties, several practical devices are designed, including a fencing competition scorekeeper, a wearable flexible skin, and a protective dental crown layer. These innovations offer new directions for the development and application of ML materials.
{"title":"Self-Recovering Multicolor Calcium Phosphate Mechanoluminescent Materials for Wearable Skin and Biomedical Applications","authors":"Ze Wang, Kai Li, Chengxue Deng, Yu Zhang, Sur Lig, Hala Muji, Qixu Tian, Kefu Chao, Yu Wang, Dengfeng Peng","doi":"10.1002/lpor.202500439","DOIUrl":"https://doi.org/10.1002/lpor.202500439","url":null,"abstract":"Mechanoluminescent (ML) materials are promising for applications in structural health monitoring, biomedicine, stress sensing, and stress distribution visualization due to their ability to emit light without external circuits. However, current ML materials face challenges, including limited luminescent colors, high raw material costs, toxicity, and lack of emissions in the invisible light spectrum. To overcome these challenges, Ca<sub>2</sub>P<sub>2</sub>O<sub>7</sub> (CPO) is selected as the matrix material due to its excellent piezoelectric properties, low cost, and biocompatibility. CPO is doped with various luminescent ions (X, X = Ce<sup>3+</sup>, Eu<sup>2+/3+</sup>, Tb<sup>3+</sup>, Dy<sup>3+</sup>, Mn<sup>2+</sup>, Sm<sup>3+</sup>) to achieve the emission bands of CPO:X across a wide range of wavelengths including UV, blue, green, yellow and red. Unlike traditional trap-controlled ML materials, CPO:X does not require UV pre-irradiation and exhibits remarkable self-recovery properties. First-principles density functional theory (DFT) calculations confirmed that CPO is an ideal matrix for self-recovering ML materials. Based on these properties, several practical devices are designed, including a fencing competition scorekeeper, a wearable flexible skin, and a protective dental crown layer. These innovations offer new directions for the development and application of ML materials.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"32 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143798305","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}
Chaoyu Xu, Jianxing Pan, Tianye Huang, Hongbo Zheng, Hong Dang, Jing Zhang, Zhichao Wu, Guodong Chen, Perry Ping Shum
Temporal cavity solitons, the temporal counterparts of Kerr frequency combs in the spectral domain, have found extensive applications over the past decade, ranging from integrated optical clocks to low‐noise microwave generation. These localized waveforms present as ultra‐narrow bright pulses in the anomalous dispersion regime and as dip‐embedded dark pulses in the normal dispersion regime, which are conventionally considered mutually exclusive within the same cavity. However, recent studies have demonstrated that near‐zero‐dispersion Kerr resonators can support the coexistence of these contrasting states. While the properties of a single soliton are extensively explored, the interaction between two solitons forming a soliton molecule remains inadequately understood. This study focuses on the coexistence of bright and dark soliton molecules in the presence of third‐order dispersion. Beginning with the fundamental element known as the switching wave, the bifurcation structures and eigenvalue distributions of both strong‐ and weak‐binding soliton molecules are systematically investigated. Furthermore, the latter can be viewed as the linear superposition of two independent solitons, where one provides alternating stable and unstable trapping spots for the other. This binding behavior can be theoretically anticipated through internal perturbation analysis.
{"title":"Near‐Zero‐Dispersion Kerr Soliton Molecules with Coexisting Dark and Bright States","authors":"Chaoyu Xu, Jianxing Pan, Tianye Huang, Hongbo Zheng, Hong Dang, Jing Zhang, Zhichao Wu, Guodong Chen, Perry Ping Shum","doi":"10.1002/lpor.202402153","DOIUrl":"https://doi.org/10.1002/lpor.202402153","url":null,"abstract":"Temporal cavity solitons, the temporal counterparts of Kerr frequency combs in the spectral domain, have found extensive applications over the past decade, ranging from integrated optical clocks to low‐noise microwave generation. These localized waveforms present as ultra‐narrow bright pulses in the anomalous dispersion regime and as dip‐embedded dark pulses in the normal dispersion regime, which are conventionally considered mutually exclusive within the same cavity. However, recent studies have demonstrated that near‐zero‐dispersion Kerr resonators can support the coexistence of these contrasting states. While the properties of a single soliton are extensively explored, the interaction between two solitons forming a soliton molecule remains inadequately understood. This study focuses on the coexistence of bright and dark soliton molecules in the presence of third‐order dispersion. Beginning with the fundamental element known as the switching wave, the bifurcation structures and eigenvalue distributions of both strong‐ and weak‐binding soliton molecules are systematically investigated. Furthermore, the latter can be viewed as the linear superposition of two independent solitons, where one provides alternating stable and unstable trapping spots for the other. This binding behavior can be theoretically anticipated through internal perturbation analysis.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"20 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143789992","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}
Ruiyang Qin, Kun Huang, Min Peng, Jianan Fang, Ben Sun, Zhengru Guo, Heping Zeng
High-speed mid-infrared (MIR) videography constitutes an enabling tool to monitor and analyze various dynamics in scientific research and industrial applications, such as combustion diagnostics, explosion reactions, photosynthetic tracking, and thermal surveillance. However, the frame rate of conventional MIR imagers is typically limited by readout electronics and detection sensitivity, especially for large spatial formats with massive pixels. Here, a high-speed MIR upconversion imaging system based on time-multiplexed nonlinear structured pumping is devised and implemented. Specifically, the dynamic infrared scene is optically gated by a sequence of spatially periodical pump patterns in a nonlinear crystal, which facilitates both rapid temporal encryption and sensitive upconversion detection. Then, the upconverted frames are superimposed onto a silicon camera within a single exposure, thus resulting in a multiplexed snapshot in the spatial-frequency domain. Finally, the sub-exposure images, corresponding to distinct transient events, can be computationally deciphered and reconstructed by the frequency recognition algorithm based on band-pass filtering and Fourier transform operations. The achieved frame rate is tenfold boosted to 10 000 frames per second without compromising the megapixel spatial format, which allows continuous real-time MIR videography at high speed and high definition. The presented approach can be readily extended to far-infrared or terahertz spectral regions, with an aim of performing high-throughput and high-sensitivity observation of transient phenomena with high temporal complexity.
{"title":"High-Speed Mid-Infrared Imaging via Nonlinear Multiplexed Detection","authors":"Ruiyang Qin, Kun Huang, Min Peng, Jianan Fang, Ben Sun, Zhengru Guo, Heping Zeng","doi":"10.1002/lpor.202500308","DOIUrl":"https://doi.org/10.1002/lpor.202500308","url":null,"abstract":"High-speed mid-infrared (MIR) videography constitutes an enabling tool to monitor and analyze various dynamics in scientific research and industrial applications, such as combustion diagnostics, explosion reactions, photosynthetic tracking, and thermal surveillance. However, the frame rate of conventional MIR imagers is typically limited by readout electronics and detection sensitivity, especially for large spatial formats with massive pixels. Here, a high-speed MIR upconversion imaging system based on time-multiplexed nonlinear structured pumping is devised and implemented. Specifically, the dynamic infrared scene is optically gated by a sequence of spatially periodical pump patterns in a nonlinear crystal, which facilitates both rapid temporal encryption and sensitive upconversion detection. Then, the upconverted frames are superimposed onto a silicon camera within a single exposure, thus resulting in a multiplexed snapshot in the spatial-frequency domain. Finally, the sub-exposure images, corresponding to distinct transient events, can be computationally deciphered and reconstructed by the frequency recognition algorithm based on band-pass filtering and Fourier transform operations. The achieved frame rate is tenfold boosted to 10 000 frames per second without compromising the megapixel spatial format, which allows continuous real-time MIR videography at high speed and high definition. The presented approach can be readily extended to far-infrared or terahertz spectral regions, with an aim of performing high-throughput and high-sensitivity observation of transient phenomena with high temporal complexity.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"59 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143798311","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}
Information security and temperature sensing play vital roles in various areas such as financial transactions, product authentication, and privacy protection. However, integrating precise control in information security technologies with highly sensitive temperature sensing remains a significant challenge. Here, a multilayer core–shell upconversion nanoparticle (UCNP) system is presented that enables dynamic dual‐color emission switching and highly sensitive temperature sensing through controlled energy transfer mechanisms. By tuning the excitation wavelength, power density, and pulse width, the system exhibits a green‐to‐blue emission transition with multimodal tunability. Using fluorescence intensity ratio techniques, maximum relative sensitivity of 1.85% K−1, demonstrating superior temperature detection performance is achieved. Furthermore, the tunable multicolor emission properties of UCNPs enable diverse applications in information security, including dynamic pattern recognition, Morse code encryption, and quick response code‐based anti‐counterfeiting. This research not only broadens the application scope of UCNPs in security and environmental monitoring but also offers perspectives on the design of multifunctional optical materials.
{"title":"Multilayer Core–Shell Upconversion Nanoparticles for Dynamic Dual‐Color Emission Switching and High‐Sensitivity Temperature Sensing in Information Security","authors":"Longchi Li, Zewen Su, Wenbin Zhang, Yinyan Li, Denghao Li, Gongxun Bai, Liang Chen","doi":"10.1002/lpor.202500346","DOIUrl":"https://doi.org/10.1002/lpor.202500346","url":null,"abstract":"Information security and temperature sensing play vital roles in various areas such as financial transactions, product authentication, and privacy protection. However, integrating precise control in information security technologies with highly sensitive temperature sensing remains a significant challenge. Here, a multilayer core–shell upconversion nanoparticle (UCNP) system is presented that enables dynamic dual‐color emission switching and highly sensitive temperature sensing through controlled energy transfer mechanisms. By tuning the excitation wavelength, power density, and pulse width, the system exhibits a green‐to‐blue emission transition with multimodal tunability. Using fluorescence intensity ratio techniques, maximum relative sensitivity of 1.85% K<jats:sup>−1</jats:sup>, demonstrating superior temperature detection performance is achieved. Furthermore, the tunable multicolor emission properties of UCNPs enable diverse applications in information security, including dynamic pattern recognition, Morse code encryption, and quick response code‐based anti‐counterfeiting. This research not only broadens the application scope of UCNPs in security and environmental monitoring but also offers perspectives on the design of multifunctional optical materials.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"4 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143789693","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}
By fully exploiting the rich parameter dimensions of the light wave including time, wavelength, transverse space, or mode, photonic integrated circuits potentially offer low‐latency, high‐throughput, and energy‐efficient solutions for acceleration of multimodal linear data processing in artificial intelligence‐related computational tasks. However, many existing schemes tailor specific parameter dimensions and construct specific architectures to suit specific computational operations and, therefore not making full use of optical resources and lacking versatility in adapting to different operations. Their scale is often linked to that of the operands, therefore lack flexibility when dealing with variable data sizes. A novel multi‐dimensional minimalist photonic processor (MD‐MPP) architecture is demonstrated, capable of simultaneously and scalably utilizing time, wavelength, and space multiplexing to achieve high throughput, versatile operations, and flexible data adaption, performing all‐optical multiply‐and‐accumulate (MAC) operations for vector dot‐products, matrix‐vector‐multiplication, single‐/multi‐kernel convolution in time‐recursive, wavelength‐parallel and spatial‐parallel fashions. As a verification, a processor chip fabricated in thin‐film lithium niobate (TFLN) experimentally implements single‐/multi‐kernel and multi‐wavelength convolution in optoelectronic convolutional neural networks with up to 36.7 billion MAC operations per second (or 73.4 GOPS) per device per wavelength, underscoring its potential to be a promising candidate for flexible optical computing at high data volumes with lower energy consumption.
{"title":"Minimalist Photonic Processor for High‐Volume and Versatile Linear Computation","authors":"Zhenhua Li, Zhaoang Deng, Jie Liu, Chuyao Bian, Jiaqing Li, Ziliang Ruan, Ranfeng Gan, Zihao Chen, Kaixuan Chen, Changjian Guo, Liu Liu, Siyuan Yu","doi":"10.1002/lpor.202402016","DOIUrl":"https://doi.org/10.1002/lpor.202402016","url":null,"abstract":"By fully exploiting the rich parameter dimensions of the light wave including time, wavelength, transverse space, or mode, photonic integrated circuits potentially offer low‐latency, high‐throughput, and energy‐efficient solutions for acceleration of multimodal linear data processing in artificial intelligence‐related computational tasks. However, many existing schemes tailor specific parameter dimensions and construct specific architectures to suit specific computational operations and, therefore not making full use of optical resources and lacking versatility in adapting to different operations. Their scale is often linked to that of the operands, therefore lack flexibility when dealing with variable data sizes. A novel multi‐dimensional minimalist photonic processor (MD‐MPP) architecture is demonstrated, capable of simultaneously and scalably utilizing time, wavelength, and space multiplexing to achieve high throughput, versatile operations, and flexible data adaption, performing all‐optical multiply‐and‐accumulate (MAC) operations for vector dot‐products, matrix‐vector‐multiplication, single‐/multi‐kernel convolution in time‐recursive, wavelength‐parallel and spatial‐parallel fashions. As a verification, a processor chip fabricated in thin‐film lithium niobate (TFLN) experimentally implements single‐/multi‐kernel and multi‐wavelength convolution in optoelectronic convolutional neural networks with up to 36.7 billion MAC operations per second (or 73.4 GOPS) per device per wavelength, underscoring its potential to be a promising candidate for flexible optical computing at high data volumes with lower energy consumption.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"1 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2025-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143782628","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}
Marcin Muszyński, Przemysław Oliwa, Pavel Kokhanchik, Piotr Kapuściński, Eva Oton, Rafał Mazur, Przemysław Morawiak, Wiktor Piecek, Przemysław Kula, Witold Bardyszewski, Barbara Piętka, Daniil Bobylev, Dmitry Solnyshkov, Guillaume Malpuech, Jacek Szczytko
Photonic Crystals with Polarization Dependence
The cover image illustrates an optical microcavity filled with molecules of a liquid crystal in the uniform lying helix phase, which was studied by Guillaume Malpuech, Jacek Szczytko and co-workers. The sinusoidal plane in the center schematically represents the periodic photonic potential formed inside the cavity, while the purple, blue, and red shapes located at its minima depict bound states arising within this potential. Additionally, green lasing dye molecules are shown inside the cavity. See article 2400794 for more details. Image designed by Marcin Muszy?ski.
{"title":"Electrically Tunable Spin-Orbit Coupled Photonic Lattice in a Liquid Crystal Microcavity (Laser Photonics Rev. 19(7)/2025)","authors":"Marcin Muszyński, Przemysław Oliwa, Pavel Kokhanchik, Piotr Kapuściński, Eva Oton, Rafał Mazur, Przemysław Morawiak, Wiktor Piecek, Przemysław Kula, Witold Bardyszewski, Barbara Piętka, Daniil Bobylev, Dmitry Solnyshkov, Guillaume Malpuech, Jacek Szczytko","doi":"10.1002/lpor.202570027","DOIUrl":"https://doi.org/10.1002/lpor.202570027","url":null,"abstract":"<p><b>Photonic Crystals with Polarization Dependence</b></p><p>The cover image illustrates an optical microcavity filled with molecules of a liquid crystal in the uniform lying helix phase, which was studied by Guillaume Malpuech, Jacek Szczytko and co-workers. The sinusoidal plane in the center schematically represents the periodic photonic potential formed inside the cavity, while the purple, blue, and red shapes located at its minima depict bound states arising within this potential. Additionally, green lasing dye molecules are shown inside the cavity. See article 2400794 for more details. Image designed by Marcin Muszy?ski.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"19 7","pages":""},"PeriodicalIF":9.8,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lpor.202570027","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143770183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhanhong Zhou, Ziwei Li, Wei Zhou, Nan Chi, Junwen Zhang, Qionghai Dai
Binary Optical Computing
The front cover shows a novel binary-weighted optical computing engine with spatial multiplexing and aggregation that achieves high-efficiency and noise robust image sensing. See article 2400936 by Ziwei Li, Qionghai Da and co-workers for more details.
{"title":"Resource-Saving and High-Robustness Image Sensing Based on Binary Optical Computing (Laser Photonics Rev. 19(7)/2025)","authors":"Zhanhong Zhou, Ziwei Li, Wei Zhou, Nan Chi, Junwen Zhang, Qionghai Dai","doi":"10.1002/lpor.202570025","DOIUrl":"https://doi.org/10.1002/lpor.202570025","url":null,"abstract":"<p><b>Binary Optical Computing</b></p><p>The front cover shows a novel binary-weighted optical computing engine with spatial multiplexing and aggregation that achieves high-efficiency and noise robust image sensing. See article 2400936 by Ziwei Li, Qionghai Da and co-workers for more details.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"19 7","pages":""},"PeriodicalIF":9.8,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/lpor.202570025","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143770180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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