Zixun Zeng, Yingsheng Wang, Dongjie Liu, Guodong Zhang, Min zhang, Pingan Ma, Zhiyao Hou, Long Tian, Hongzhou lian, Jun Lin
The pursuit of photoluminescence quantum yield (PLQY) in the near‐infrared‐II (NIR–II) emission of Er 3+ has been a profoundly challenging goal, primarily due to the inherent inefficiency of Er 3+ emitters caused by parity‐forbidden transitions. In this work, we overcome this fundamental limitation with a Ce 3+ /Er 3+ co‐doped Cs 2 NaYCl 6 double perovskites that simultaneously achieve an absorption efficiency of 63% and an unprecedented NIR PLQY of 96%. We attribute this performance to a dual strategy. Here, Ce 3+ ions efficiently harvest excitation energy via their strongly allowed 4f–5d transitions. The harvested energy is then transferred to Er 3+ through a highly effective Förster resonance energy transfer (FRET) process. Concurrently, a network of cross‐relaxation (CR) processes between Er 3+ –Er 3+ and Ce 3+ –Er 3+ works synergistically to multiply the photon output and populate the 4 I 13/2 emitting state. Additionally, the material exhibits outstanding thermal stability, retaining over 80% of its NIR intensity at 410 K. Due to the excellent properties of Ce 3+ /Er 3+ co‐doped Cs 2 NaYCl 6 , we demonstrate its application potential in NIR–II bioimaging, high‐sensitivity optical thermometry, and X‐ray activated persistent luminescence. This work not only presents an outstanding material candidate for NIR optical application, but also establishes a promising strategy for improving the performance of future rare‐earth‐based optical materials.
{"title":"Near‐Unity Quantum Yield and Thermally Stable NIR–II Emission in Ce 3+ /Er 3+ Co‐Doped Cs 2 NaYCl 6 Double Perovskites via Synergistic Energy Manipulation","authors":"Zixun Zeng, Yingsheng Wang, Dongjie Liu, Guodong Zhang, Min zhang, Pingan Ma, Zhiyao Hou, Long Tian, Hongzhou lian, Jun Lin","doi":"10.1002/lpor.71122","DOIUrl":"https://doi.org/10.1002/lpor.71122","url":null,"abstract":"The pursuit of photoluminescence quantum yield (PLQY) in the near‐infrared‐II (NIR–II) emission of Er <jats:sup>3+</jats:sup> has been a profoundly challenging goal, primarily due to the inherent inefficiency of Er <jats:sup>3+</jats:sup> emitters caused by parity‐forbidden transitions. In this work, we overcome this fundamental limitation with a Ce <jats:sup>3+</jats:sup> /Er <jats:sup>3+</jats:sup> co‐doped Cs <jats:sub>2</jats:sub> NaYCl <jats:sub>6</jats:sub> double perovskites that simultaneously achieve an absorption efficiency of 63% and an unprecedented NIR PLQY of 96%. We attribute this performance to a dual strategy. Here, Ce <jats:sup>3+</jats:sup> ions efficiently harvest excitation energy via their strongly allowed 4f–5d transitions. The harvested energy is then transferred to Er <jats:sup>3+</jats:sup> through a highly effective Förster resonance energy transfer (FRET) process. Concurrently, a network of cross‐relaxation (CR) processes between Er <jats:sup>3+</jats:sup> –Er <jats:sup>3+</jats:sup> and Ce <jats:sup>3+</jats:sup> –Er <jats:sup>3+</jats:sup> works synergistically to multiply the photon output and populate the <jats:sup>4</jats:sup> I <jats:sub>13/2</jats:sub> emitting state. Additionally, the material exhibits outstanding thermal stability, retaining over 80% of its NIR intensity at 410 K. Due to the excellent properties of Ce <jats:sup>3+</jats:sup> /Er <jats:sup>3+</jats:sup> co‐doped Cs <jats:sub>2</jats:sub> NaYCl <jats:sub>6</jats:sub> , we demonstrate its application potential in NIR–II bioimaging, high‐sensitivity optical thermometry, and X‐ray activated persistent luminescence. This work not only presents an outstanding material candidate for NIR optical application, but also establishes a promising strategy for improving the performance of future rare‐earth‐based optical materials.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"85 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2026-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147492521","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}
Yaru Shi, Xingyu Zhao, Yu Du, Mingxiu Liu, Chunlu Chang, Huaiyu Xiang, Fan Tan, Zhilin Liu, Nan Zhang, Liujian Qi, Yuting Zou, Dabing Li, Shaojuan Li
With the emergent demand for secure communication technologies, photodetectors that integrate high‐performance broadband detection with encryption functionalities are vital to address the escalating cybersecurity challenges. Here, we present a device‐level embedded encryption approach via dynamically engineering the energy barrier at the van der Waals heterointerface through quantum dots (QDs) integration. Incorporating PbSe QDs into the MoTe 2 /MoSe 2 heterostructure introduces a bias‐reconfigurable interfacial barrier, enabling multiple photoresponse states under dual‐voltage (drain‐source, Vds , and gate‐source, Vgs ) modulations. Driven by dual‐voltage‐controlled band bending, the device exhibits encrypted photocurrents with well‐distinguished states, thereby enabling the implementation of a physical‐layer cryptographic protocol. This synergy supports the device's real‐time encryption key generation through voltage‐driven carrier dynamics. The dual‐channel encryption capability allows independent data streams to be securely transmitted via Vds and Vgs encoding with an ultralow estimated theoretical bit error rate, where eavesdropping is inherently thwarted by nonlinear photocurrent‐state dependencies. Additionally, the integration of PbSe QDs into the heterostructure simultaneously delivers enhanced broadband photodetection performance from 532 to 2200 nm, achieving a notable responsivity of 80 A W −1 at 1550 nm. Our work bridges high‐performance photodetection with data encryption, offering an innovative route for future advancements in optoelectronics and secure communication systems.
随着对安全通信技术的迫切需求，集成高性能宽带检测和加密功能的光电探测器对于解决不断升级的网络安全挑战至关重要。在这里，我们提出了一种设备级嵌入式加密方法，通过量子点（QDs）集成动态设计范德华异质界面的能量势垒。将PbSe量子点整合到MoTe 2 /MoSe 2异质结构中，引入了一个偏置可重构的界面势垒，在双电压（漏极源，V ds和栅极源，V gs）调制下实现了多种光响应状态。在双电压控制的带弯曲驱动下，该器件显示出具有良好区分状态的加密光电流，从而实现物理层加密协议。这种协同作用通过电压驱动的载波动态支持器件的实时加密密钥生成。双通道加密功能允许独立的数据流通过vds和vgs编码安全地传输，具有超低的估计理论误码率，其中窃听本身就受到非线性光电流状态依赖关系的阻碍。此外，将PbSe量子点集成到异质结构中同时增强了532至2200 nm的宽带光探测性能，在1550 nm处实现了80 a W−1的显着响应率。我们的工作将高性能光电探测与数据加密相结合，为光电子和安全通信系统的未来发展提供了创新途径。
{"title":"Dynamically Hardware‐Level Encryption Based on PbSe Quantum Dots‐Modulated 2D Heterostructure Photodetector","authors":"Yaru Shi, Xingyu Zhao, Yu Du, Mingxiu Liu, Chunlu Chang, Huaiyu Xiang, Fan Tan, Zhilin Liu, Nan Zhang, Liujian Qi, Yuting Zou, Dabing Li, Shaojuan Li","doi":"10.1002/lpor.202503198","DOIUrl":"https://doi.org/10.1002/lpor.202503198","url":null,"abstract":"With the emergent demand for secure communication technologies, photodetectors that integrate high‐performance broadband detection with encryption functionalities are vital to address the escalating cybersecurity challenges. Here, we present a device‐level embedded encryption approach via dynamically engineering the energy barrier at the van der Waals heterointerface through quantum dots (QDs) integration. Incorporating PbSe QDs into the MoTe <jats:sub>2</jats:sub> /MoSe <jats:sub>2</jats:sub> heterostructure introduces a bias‐reconfigurable interfacial barrier, enabling multiple photoresponse states under dual‐voltage (drain‐source, <jats:italic>V</jats:italic> <jats:sub>ds</jats:sub> , and gate‐source, <jats:italic>V</jats:italic> <jats:sub>gs</jats:sub> ) modulations. Driven by dual‐voltage‐controlled band bending, the device exhibits encrypted photocurrents with well‐distinguished states, thereby enabling the implementation of a physical‐layer cryptographic protocol. This synergy supports the device's real‐time encryption key generation through voltage‐driven carrier dynamics. The dual‐channel encryption capability allows independent data streams to be securely transmitted via <jats:italic>V</jats:italic> <jats:sub>ds</jats:sub> and <jats:italic>V</jats:italic> <jats:sub>gs</jats:sub> encoding with an ultralow estimated theoretical bit error rate, where eavesdropping is inherently thwarted by nonlinear photocurrent‐state dependencies. Additionally, the integration of PbSe QDs into the heterostructure simultaneously delivers enhanced broadband photodetection performance from 532 to 2200 nm, achieving a notable responsivity of 80 A W <jats:sup>−1</jats:sup> at 1550 nm. Our work bridges high‐performance photodetection with data encryption, offering an innovative route for future advancements in optoelectronics and secure communication systems.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"10 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2026-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147478361","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}
Kun Huang, Shuo Ma, Guancheng Huang, Ziyang Li, Longhui Fu, Ming Sun, Yong Shuai, Shutian Liu, Zhengjun Liu, Yutong Li
High‐performance benchtop microscopes are traditionally tethered to costly and cumbersome hardware, with complex illumination and multi‐lens optics, limiting applications beyond laboratories, especially in resource‐limited or field settings, thereby motivating portable alternatives. A handheld smartphone microscope is presented, featuring a compact, single‐lens system that integrates a sparse multi‐annular illumination strategy based on Kramers‐Kronig relations (sAIKK). This computational framework efficiently achieves fourfold synthetic‐aperture quantitative phase imaging (QPI), facilitated by matched illumination implemented on the smartphone without mechanical hardware, thereby harnessing their complementary strengths. Imaging performance is validated on the resolution target, achieving a resolution of 691 nm from four images and reaching an enhanced resolution of 345 nm (synthetic NA of 0.92) by incorporating two sparse annular illumination. The diagnostic and research capabilities are demonstrated by performing QPI on an unstained cross‐section of the gastric fundus, conducting morphometric analysis and screening of malaria‐infected blood smears, and generating a color image of a pine stem. Leveraging the synergy of modular hardware and computational framework, this do‐it‐yourself, cost‐effective platform provides an accessible alternative to high‐end microscopes and holds significant potential for rapid on‐site diagnostics and scientific education.
{"title":"Handheld Smartscope for High‐Throughput Quantitative Phase Imaging via Sparse Multi‐Annular Illumination and Kramers‐Kronig Relations","authors":"Kun Huang, Shuo Ma, Guancheng Huang, Ziyang Li, Longhui Fu, Ming Sun, Yong Shuai, Shutian Liu, Zhengjun Liu, Yutong Li","doi":"10.1002/lpor.71115","DOIUrl":"https://doi.org/10.1002/lpor.71115","url":null,"abstract":"High‐performance benchtop microscopes are traditionally tethered to costly and cumbersome hardware, with complex illumination and multi‐lens optics, limiting applications beyond laboratories, especially in resource‐limited or field settings, thereby motivating portable alternatives. A handheld smartphone microscope is presented, featuring a compact, single‐lens system that integrates a sparse multi‐annular illumination strategy based on Kramers‐Kronig relations (sAIKK). This computational framework efficiently achieves fourfold synthetic‐aperture quantitative phase imaging (QPI), facilitated by matched illumination implemented on the smartphone without mechanical hardware, thereby harnessing their complementary strengths. Imaging performance is validated on the resolution target, achieving a resolution of 691 nm from four images and reaching an enhanced resolution of 345 nm (synthetic NA of 0.92) by incorporating two sparse annular illumination. The diagnostic and research capabilities are demonstrated by performing QPI on an unstained cross‐section of the gastric fundus, conducting morphometric analysis and screening of malaria‐infected blood smears, and generating a color image of a pine stem. Leveraging the synergy of modular hardware and computational framework, this do‐it‐yourself, cost‐effective platform provides an accessible alternative to high‐end microscopes and holds significant potential for rapid on‐site diagnostics and scientific education.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"28 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2026-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147478386","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}
Topological photonic crystals (TPCs) provide a robust platform for terahertz (THz) applications demanding precise manipulation of topological band structures. This study demonstrates a planar valley TPC operating in the THz regime, facilitating tunable coupling between adjacent edge states. When two domain walls supporting different topological edge modes are positioned in close proximity, the spatial overlap of their evanescent wavefunction tails induces mode coupling, resulting in the emergence of a bandgap within the edge‐state continuum. A semi‐analytical model, inspired by frameworks in quantum mechanics and condensed matter physics, quantitatively correlates the induced bandgap width with the modal decay constants and spatial separation of the edge states. Full‐wave simulations of diverse supercell architectures, including those incorporating Dirac photonic crystals (DPCs), corroborate the theoretical predictions. Exploiting this coupling mechanism, an on‐chip THz topological duplexer is designed and experimentally realized, demonstrating low insertion loss, high isolation, and strong immunity to fabrication imperfections, withstanding geometric deviations of up to approximately 20% without performance degradation. These findings establish a unified framework for bandgap engineering via edge‐state interactions and open a new avenue toward high‐performance, frequency‐selective, and integration‐compatible topological photonic devices in the THz regime.
{"title":"Coupled Edge‐state Modes for Bandgap Engineering and Terahertz Topological Duplexer Integration","authors":"Haolong Wang, Hongyu Shi, Zhihao Lan, Wei E. I. Sha, Fei Gao, Zixin Liu, Cheng Guo, Jianjia Yi, Xiaoming Chen, Anxue Zhang","doi":"10.1002/lpor.202503173","DOIUrl":"https://doi.org/10.1002/lpor.202503173","url":null,"abstract":"Topological photonic crystals (TPCs) provide a robust platform for terahertz (THz) applications demanding precise manipulation of topological band structures. This study demonstrates a planar valley TPC operating in the THz regime, facilitating tunable coupling between adjacent edge states. When two domain walls supporting different topological edge modes are positioned in close proximity, the spatial overlap of their evanescent wavefunction tails induces mode coupling, resulting in the emergence of a bandgap within the edge‐state continuum. A semi‐analytical model, inspired by frameworks in quantum mechanics and condensed matter physics, quantitatively correlates the induced bandgap width with the modal decay constants and spatial separation of the edge states. Full‐wave simulations of diverse supercell architectures, including those incorporating Dirac photonic crystals (DPCs), corroborate the theoretical predictions. Exploiting this coupling mechanism, an on‐chip THz topological duplexer is designed and experimentally realized, demonstrating low insertion loss, high isolation, and strong immunity to fabrication imperfections, withstanding geometric deviations of up to approximately 20% without performance degradation. These findings establish a unified framework for bandgap engineering via edge‐state interactions and open a new avenue toward high‐performance, frequency‐selective, and integration‐compatible topological photonic devices in the THz regime.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"9 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2026-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147478360","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}
Yupei Liang, Dingfu Zhang, Genhong Guo, Hao Zhang, Muyan Gao, Yunjiang Rao, Chee Wei Wong, Teng Tan, Baicheng Yao
The advancement of soliton microcombs has significantly impacted information science, yet their generation in passive microcavities poses limitations due to the need of a high intrinsic quality ( Q) factor. Conversely, creating laser solitons in active microresonators is hindered by restricted doping volume, gain bandwidth, and opto‐thermal effects. Here, we demonstrate precise and large‐scale optical control over intracavity loss factor ( κin ) and coupling loss factor ( κex ) in active microcavities by embedding erbium ions (Er 3+ ) on the cavity surface. This approach enables low‐threshold operation, broad comb spans, and enhanced intracavity power without needing external pumping‐amplification for the generation of dissipative Kerr solitons. It offers noise‐suppressed characteristics from amplified spontaneous emission while facilitating dynamic soliton manipulation, allowing deterministic single‐soliton generation even in low‐ Q microcavities. Our findings introduce a paradigm for active microcavity solitons (AMCSs) that merge the benefits of coherent and incoherent pumping in compact photonic systems, paving a way for versatile microcomb‐based photonic applications.
{"title":"Dissipative Kerr Solitons in an Active Microcavity","authors":"Yupei Liang, Dingfu Zhang, Genhong Guo, Hao Zhang, Muyan Gao, Yunjiang Rao, Chee Wei Wong, Teng Tan, Baicheng Yao","doi":"10.1002/lpor.202502552","DOIUrl":"https://doi.org/10.1002/lpor.202502552","url":null,"abstract":"The advancement of soliton microcombs has significantly impacted information science, yet their generation in passive microcavities poses limitations due to the need of a high intrinsic quality ( <jats:italic>Q)</jats:italic> factor. Conversely, creating laser solitons in active microresonators is hindered by restricted doping volume, gain bandwidth, and opto‐thermal effects. Here, we demonstrate precise and large‐scale optical control over intracavity loss factor ( <jats:italic>κ</jats:italic> <jats:sub>in</jats:sub> ) and coupling loss factor ( <jats:italic>κ</jats:italic> <jats:sub>ex</jats:sub> ) in active microcavities by embedding erbium ions (Er <jats:sup>3+</jats:sup> ) on the cavity surface. This approach enables low‐threshold operation, broad comb spans, and enhanced intracavity power without needing external pumping‐amplification for the generation of dissipative Kerr solitons. It offers noise‐suppressed characteristics from amplified spontaneous emission while facilitating dynamic soliton manipulation, allowing deterministic single‐soliton generation even in low‐ <jats:italic>Q</jats:italic> microcavities. Our findings introduce a paradigm for active microcavity solitons (AMCSs) that merge the benefits of coherent and incoherent pumping in compact photonic systems, paving a way for versatile microcomb‐based photonic applications.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"44 1 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2026-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147478387","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}
Dale Xie, Chenqi Yi, Shishuo Li, Kai Li, Jiubin Jue, Zongsong Gan
Femtosecond laser in situ generation of photoluminescent nanocrystals enables rapid fabrication and tunable fluorescence, but the resulting crystals often exhibit poor quality and low quantum efficiency. Additionally, the high pulse energy required tends to induce hollow structures, hindering the formation of high‐quality fluorescent data points. In this study, bright and stable CdSeZnS nanocrystals were directly synthesized in situ within an organic medium at room temperature using a femtosecond laser. A record‐high equivalent fluorescence quantum yield of 36.4% was achieved. This is the highest efficiency ever attained for this technique. Adjusting the laser parameters allows tuning of the emission wavelength of the nanocrystals from green to red, enabling the successful realization of both 2‐ and 3D patterning. The formation mechanism of laser‐induced nanocrystals and their alloying process were systematically investigated. The key challenge of hollow structure formation during laser‐induced crystal growth was successfully addressed by employing a strategy of low‐power nucleation and subsequently heating growth. These laser‐generated nanocrystals demonstrate flexibility and stability, retaining fluorescence after 7 days of solution storage. Furthermore, patterning can be achieved with ultra‐low pulse energy (as low as 5 nJ) and submicron resolution (minimum dot spacing of 700 nm). This work highlights the significant potential of laser‐synthesized alloy nanocrystals for advanced photonics applications, including optical storage and anti‐counterfeiting
{"title":"Laser‐Driven Synthesis of Bright and Stable CdSeZnS Alloy Nanocrystals in Organic Media","authors":"Dale Xie, Chenqi Yi, Shishuo Li, Kai Li, Jiubin Jue, Zongsong Gan","doi":"10.1002/lpor.202503234","DOIUrl":"https://doi.org/10.1002/lpor.202503234","url":null,"abstract":"Femtosecond laser in situ generation of photoluminescent nanocrystals enables rapid fabrication and tunable fluorescence, but the resulting crystals often exhibit poor quality and low quantum efficiency. Additionally, the high pulse energy required tends to induce hollow structures, hindering the formation of high‐quality fluorescent data points. In this study, bright and stable CdSeZnS nanocrystals were directly synthesized in situ within an organic medium at room temperature using a femtosecond laser. A record‐high equivalent fluorescence quantum yield of 36.4% was achieved. This is the highest efficiency ever attained for this technique. Adjusting the laser parameters allows tuning of the emission wavelength of the nanocrystals from green to red, enabling the successful realization of both 2‐ and 3D patterning. The formation mechanism of laser‐induced nanocrystals and their alloying process were systematically investigated. The key challenge of hollow structure formation during laser‐induced crystal growth was successfully addressed by employing a strategy of low‐power nucleation and subsequently heating growth. These laser‐generated nanocrystals demonstrate flexibility and stability, retaining fluorescence after 7 days of solution storage. Furthermore, patterning can be achieved with ultra‐low pulse energy (as low as 5 nJ) and submicron resolution (minimum dot spacing of 700 nm). This work highlights the significant potential of laser‐synthesized alloy nanocrystals for advanced photonics applications, including optical storage and anti‐counterfeiting","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"6 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2026-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147478388","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}
Jingxuan Zhang, Jiaren Du, Tongxin Liu, Zetian Yang, Hengwei Lin
Photochromic materials exhibiting specific coloration responses are in high demand for spectrally‐selective radiation dosimetry, while it remains a challenge for existing materials. Herein, this study introduces a new approach to modulating the dosimetric characteristics of BaMgSiO 4 by leveraging the synergistic interplay between compositional regulation (cobalt ion doping) and synthesis process optimization. The synthesized material demonstrates a broad spectrum of photochromic hue variations—ranging from pink, yellow, gray, to gray‐green—contingent upon their composition and the atmosphere conditions of synthesis. Analyses utilizing thermoluminescence and electron paramagnetic resonance substantiate that the observed chromatic variations are attributable to the introduction of novel trap states via cobalt doping, which modifies the characteristics of F‐centers. The BMSO:Co‐Air sample exhibits a pronounced selective reactivity to high‐energy electromagnetic radiation, specifically in the UVC and X‐ray. This selective energy response can be ascribed to the dynamics of trap modulation and the processes involved in trap occupation. The practical utility of BMSO:Co‐based materials is demonstrated through the fabrication of multichromatic patterns, wearable photochromic fabrics, and prototype colorimetric dosimeters. This work not only provides an advanced photochromic dosimeter for spectrally‐selective UV dosimetry but also offers guidance for the development of photochromic materials with specific coloration behaviors.
{"title":"Designing Photochromic Materials With Specific Coloration Responses for Spectrally‐Selective Radiation Dosimetry","authors":"Jingxuan Zhang, Jiaren Du, Tongxin Liu, Zetian Yang, Hengwei Lin","doi":"10.1002/lpor.202502500","DOIUrl":"https://doi.org/10.1002/lpor.202502500","url":null,"abstract":"Photochromic materials exhibiting specific coloration responses are in high demand for spectrally‐selective radiation dosimetry, while it remains a challenge for existing materials. Herein, this study introduces a new approach to modulating the dosimetric characteristics of BaMgSiO <jats:sub>4</jats:sub> by leveraging the synergistic interplay between compositional regulation (cobalt ion doping) and synthesis process optimization. The synthesized material demonstrates a broad spectrum of photochromic hue variations—ranging from pink, yellow, gray, to gray‐green—contingent upon their composition and the atmosphere conditions of synthesis. Analyses utilizing thermoluminescence and electron paramagnetic resonance substantiate that the observed chromatic variations are attributable to the introduction of novel trap states via cobalt doping, which modifies the characteristics of F‐centers. The BMSO:Co‐Air sample exhibits a pronounced selective reactivity to high‐energy electromagnetic radiation, specifically in the UVC and X‐ray. This selective energy response can be ascribed to the dynamics of trap modulation and the processes involved in trap occupation. The practical utility of BMSO:Co‐based materials is demonstrated through the fabrication of multichromatic patterns, wearable photochromic fabrics, and prototype colorimetric dosimeters. This work not only provides an advanced photochromic dosimeter for spectrally‐selective UV dosimetry but also offers guidance for the development of photochromic materials with specific coloration behaviors.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"12 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2026-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147478389","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}
The ever‐growing demand for artificial intelligence (AI) acceleration has motivated research on novel photonic neuromorphic computation architectures, aiming for breakthroughs in computation speed and energy efficiency. Reservoir computing (RC), a hardware‐friendly and training‐efficient paradigm, has emerged as a compelling candidate. However, existing photonic RC systems, whether in time‐multiplexed single‐node implementations or passive parallel interconnections, suffer from fixed reservoir connections, which significantly constrain their adaptability and computational versatility across tasks. Here, we propose a reconfigurable optoelectronic RC system featuring a multi‐physical node architecture, constructed on a large‐scale programmable silicon photonic arithmetic computing engine. By integrating 64 physical nodes with tunable interconnect topology and connection density, the system allows flexible configuration of the reservoir layer tailored to specific computational demands. We further present a scalable deep RC architecture that expands the effective reservoir dimensionality to over 600 reservoir nodes. Operating at 1 GHz with 3 ns latency, the platform delivers 8.19 TOPS and excels across diverse applications. Experiments demonstrate state‐of‐the‐art results: 99.8% accuracy in modulation‐format identification over distorted channels, a 0.61 dB improvement in signal quality via nonlinear equalization, and 96.7% accuracy in image classification. This work provides a scalable, task‐adaptive solution for high‐speed neuromorphic computing, advancing the practical deployment of photonic intelligence.
{"title":"Reconfigurable Large‐Scale Optoelectronic Reservoir Computing on Programmable Silicon Photonic Processor","authors":"Dengfei Tang, Fangchen Hu, Shiyue Hua, Shanshan Yu, Zhiteng Luo, Junwen Zhang, Jianyang Shi, Wei Chu, Nan Chi, Haibin Zhao, Ziwei Li","doi":"10.1002/lpor.202502753","DOIUrl":"https://doi.org/10.1002/lpor.202502753","url":null,"abstract":"The ever‐growing demand for artificial intelligence (AI) acceleration has motivated research on novel photonic neuromorphic computation architectures, aiming for breakthroughs in computation speed and energy efficiency. Reservoir computing (RC), a hardware‐friendly and training‐efficient paradigm, has emerged as a compelling candidate. However, existing photonic RC systems, whether in time‐multiplexed single‐node implementations or passive parallel interconnections, suffer from fixed reservoir connections, which significantly constrain their adaptability and computational versatility across tasks. Here, we propose a reconfigurable optoelectronic RC system featuring a multi‐physical node architecture, constructed on a large‐scale programmable silicon photonic arithmetic computing engine. By integrating 64 physical nodes with tunable interconnect topology and connection density, the system allows flexible configuration of the reservoir layer tailored to specific computational demands. We further present a scalable deep RC architecture that expands the effective reservoir dimensionality to over 600 reservoir nodes. Operating at 1 GHz with 3 ns latency, the platform delivers 8.19 TOPS and excels across diverse applications. Experiments demonstrate state‐of‐the‐art results: 99.8% accuracy in modulation‐format identification over distorted channels, a 0.61 dB improvement in signal quality via nonlinear equalization, and 96.7% accuracy in image classification. This work provides a scalable, task‐adaptive solution for high‐speed neuromorphic computing, advancing the practical deployment of photonic intelligence.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":"44 1","pages":""},"PeriodicalIF":11.0,"publicationDate":"2026-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147478385","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：