Optics letters最新文献_第4页

Optimizing multi-cycle THz generation in PPLN: the role of central frequency and temperature. 优化PPLN中多周太赫兹产生：中心频率和温度的作用。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.571669

Umit Demirbas, Alexandre Trisorio, Carlo Vicario

引用次数: 0

111 W picosecond Ho:YAG amplifier and its application to 10 μm mid-infrared generation. 111 W皮秒Ho:YAG放大器及其在10 μm中红外生成中的应用。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.574416

Jinwen Tang, Xiaoxiao Hua, Minglang Wu, Wenhao Cheng, Zhitai Zhou, Baoquan Yao, Tongyu Dai, Xiaoming Duan

引用次数: 0

Yb³⁺-optimized core-shell structured luminescent material for dual-mode encryption and deep learning fluorescence imaging. 用于双模加密和深度学习荧光成像的Yb3+优化核壳结构发光材料。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.569475

Dongdong Li, Qianqian Zhang, Qi Fan, Tongju Zheng, Zhiyu Zhang, Jiangbo She

{"title":"Yb3+-optimized core-shell structured luminescent material for dual-mode encryption and deep learning fluorescence imaging.","authors":"Dongdong Li, Qianqian Zhang, Qi Fan, Tongju Zheng, Zhiyu Zhang, Jiangbo She","doi":"10.1364/OL.569475","DOIUrl":"https://doi.org/10.1364/OL.569475","url":null,"abstract":"NaYF4:Yb3+, Nd3+Ln3+ (Er3+, Tm3+)@NaYF4:Yb3+ core-shell upconversion luminescent (UCL) materials were prepared by combining the hydrothermal and epitaxial growth methods. Under the excitation of 980 nm laser, the prepared NaYF4:Yb3+, Nd3+, Er3+@NaYF4:Yb3+ UCL materials can emit green light, and NaYF4:Yb3+, Nd3+, Tm3+@NaYF4:Yb3+ UCL materials can emit blue light, respectively. Under the optimized Yb3+ doping concentration, the luminescence intensity was enhanced by 16.54 and 17.56 times compared to the nucleus, respectively. Anti-counterfeiting ink was made using the resulting UCL materials as its source ingredient. First, through precise screen-printing techniques, we fabricated QR code patterns that demonstrated the unique luminescent characteristics of the core-shell UCL materials. Also, we implemented a Morse code-based dot-line combination pattern to demonstrate the practical application. Multi-level security features integrating structural (Morse code patterns) and information (QR codes) encryption were developed, significantly enhancing information protection reliability. Furthermore, a snowflake-patterned categorization recognition model was constructed through a residual neural network developed on PyCharm platform. This recognition system achieved 96.55% classification accuracy, demonstrating substantial technical advantages for advanced anti-counterfeiting authentication applications.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"5969-5972"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Light extraction efficiency enhancement of deep ultraviolet light-emitting diodes using wafer-scale SiO₂-based patterned dielectric nanostructures. 利用晶圆级二氧化硅图像化电介质纳米结构增强深紫外发光二极管的光提取效率。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.574551

Yufan Wei, Maocheng Shan, Zhiwei Gao, Yongming Zhao, Zhencheng Li, Zhenyu Chen, Yuhui Zeng, Zhengang Liang, Xiantai Tian, Yang Peng, Feng Wu, Changqing Chen, Hao-Chung Kuo, Jiangnan Dai

{"title":"Light extraction efficiency enhancement of deep ultraviolet light-emitting diodes using wafer-scale SiO2-based patterned dielectric nanostructures.","authors":"Yufan Wei, Maocheng Shan, Zhiwei Gao, Yongming Zhao, Zhencheng Li, Zhenyu Chen, Yuhui Zeng, Zhengang Liang, Xiantai Tian, Yang Peng, Feng Wu, Changqing Chen, Hao-Chung Kuo, Jiangnan Dai","doi":"10.1364/OL.574551","DOIUrl":"https://doi.org/10.1364/OL.574551","url":null,"abstract":"The progress of AlGaN-based deep ultraviolet light-emitting diodes is significantly limited by their unideal light extraction efficiency. In this work, a cost-efficient nanosphere lithography technique is utilized to fabricate wafer-scale SiO2-based patterned dielectric nanostructures on the backside of sapphire substrates. Mapping results and statistical analyses demonstrate a uniform optical power enhancement across the entire chip, and the average power can be increased by 16.7% with almost identical peak wavelength and slightly enhanced operating voltage. The light output power of the LEDs with the patterned film exhibits a substantial enhancement of 34.0% compared to conventional LEDs at an injected current of 330 mA, accompanied by a 1.34-fold increase in light extraction efficiency. Finite-difference time-domain simulations indicate that the nanostructures on the patterned film effectively weakened total internal reflection at the sapphire/air interface. The above results validate the scalability of this method for industrial mass production of high-power DUV LEDs.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"6133-6136"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Improved finite-size analysis for measurement-device-independent quantum digital signatures. 改进了与测量设备无关的量子数字签名的有限尺寸分析。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.569676

Jia-Li Zhu, Chun-Hui Zhang, Qin Wang

引用次数: 0

Effect of optical anisotropy of bismuth active centers on polarization properties of fiber laser at 1.46 µm. 铋活性中心光学各向异性对1.46µm光纤激光器偏振特性的影响。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.572426

A V Elopov, K E Riumkin, S V Alyshev, A V Kharakhordin, A M Khegai, A N Denisov, E G Firstova, F V Afanasiev, A N Abramov, D S Lipatov, S V Firstov, M A Melkumov

引用次数: 0

Multipole mixing in spin polarization of Auger electrons following single-photon ionization of boronlike ions. 类硼离子单光子电离后俄歇电子自旋极化中的多极混合。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.572571

Yi Li, Juqiang Wang, Zhongwen Wu

{"title":"Multipole mixing in spin polarization of Auger electrons following single-photon ionization of boronlike ions.","authors":"Yi Li, Juqiang Wang, Zhongwen Wu","doi":"10.1364/OL.572571","DOIUrl":"https://doi.org/10.1364/OL.572571","url":null,"abstract":"Spin polarization of Auger electrons emitted in the nonradiative decay following 1s single-photon ionization of boronlike ions is studied using the density-matrix theory. Special attention is paid to the multipole mixing effect of the ionizing field on the spin polarization. It is found that the effect significantly weakens the spin polarization for heavy ions, which becomes more pronounced for heavier ions. Such a depolarization effect is analogous to but stronger than that observed in linear polarization of x-ray photons [Phys. Rev. Lett.105, 243002 (2010)10.1103/PhysRevLett.105.040403]. It provides evidence of depolarization in the spin polarization of Auger electrons. The obtained spin polarization and multipole mixing contribution are sufficiently large to be observed using a Mott polarimeter combined with an advanced light source, which could provide novel insights into electron-photon interaction in the presence of strong Coulomb fields. Beyond the fundamental significance, the finding holds potential applications in surface and material science due to the close connection between the spin polarization of Auger electrons and the magnetic properties of matter.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"6209-6212"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Dual polarization-independent quasi-BICs enabled by out-of-plane symmetry breaking in nanodisk tetramer metasurface. 利用面外对称破缺实现纳米盘四聚体超表面的双偏振无关准bic。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.564621

Jie Wang, Yedong Niu, Mingxi Zhang, Haotian Wu, Jing Chen

{"title":"Dual polarization-independent quasi-BICs enabled by out-of-plane symmetry breaking in nanodisk tetramer metasurface.","authors":"Jie Wang, Yedong Niu, Mingxi Zhang, Haotian Wu, Jing Chen","doi":"10.1364/OL.564621","DOIUrl":"https://doi.org/10.1364/OL.564621","url":null,"abstract":"Polarization-independent quasi-bound states in the continuum (quasi-BICs) based on asymmetric all-dielectric metasurfaces have attracted significant attention due to their insensitivity to the polarization state of incident light. However, the conventional paradigm of in-plane symmetry breaking overlooks vertical design space, fundamentally limiting integration density and practical deployment in photonic systems. In this Letter, we present dual polarization-independent quasi-BIC resonances in a rotationally symmetric all-dielectric nanodisk tetramer metasurface. By introducing height perturbations in nanodisks along one diagonal, the out-of-plane symmetry breaking excites dual quasi-BIC resonances while enhancing structural compactness. We demonstrate that these resonant modes in the near-infrared exhibit flexible tunability through modulation of the asymmetry parameter. It is also found that the dual quasi-BIC resonances are polarization-independent through transmission spectra analysis. Multipole decomposition and near-field analysis reveal the formation mechanism of the dual quasi-BIC resonances. Additionally, the proposed metasurface exhibits remarkable sensing sensitivity of 311 nm/RIU and a figure of merit (FOM) of 1777.14 RIU-1. Our work holds significant promise for high-performance label-free sensing applications.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"5933-5936"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Ptychographic Mueller matrix imaging: in-situ system calibration and evaluation. 平面穆勒矩阵成像：原位系统校准和评估。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.574821

Ming Gong, Li Liu, Nanxi Li, Qihang Zhang, Jiamin Liu, Honggang Gu, Shiyuan Liu

{"title":"Ptychographic Mueller matrix imaging: in-situ system calibration and evaluation.","authors":"Ming Gong, Li Liu, Nanxi Li, Qihang Zhang, Jiamin Liu, Honggang Gu, Shiyuan Liu","doi":"10.1364/OL.574821","DOIUrl":"https://doi.org/10.1364/OL.574821","url":null,"abstract":"Calibration is crucial for accurate polarimetric systems. In this Letter, we propose a hybrid strategy to in-situ calibrate the ptychographic Mueller matrix imaging (PMMI) system [Opt. Lett.49, 6409 (2024)10.1364/OL.539100], extending our previous work. The proposed approach combines the eigenvalue calibration method to determine the polarimetric matrix of the polarization state generator, followed by a model-based calibration procedure to determine the polarimetric properties of the polarization state analyzer. With this strategy, the PMMI system can be in-situ calibrated within the actual operational configuration, which can effectively compensate the imperfections in polarization components and mounting errors. Experiments were conducted on a home-built PMMI prototype, and an isotropic USAF-1951 resolution target with theoretical identity Mueller matrix is tested to quantitatively evaluate the system performances. Experimental results indicate that after calibration, the measurement accuracy and precision of the imaging Mueller matrix are 0.01 and 0.005, respectively, and the measurement repeatability is 0.005. The proposed in-situ calibration technique and comprehensive system evaluation render the PMMI a powerful and quantitative tool for the characterization of nanomaterials and nanostructures.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"6137-6140"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

200-km multi-user fully connected quantum entanglement distribution network in noisy environments. 噪声环境下200公里多用户全连接量子纠缠配电网。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.569922

Yunlong Hou, Yilin Yang, Zhantong Qi, Hao Li, Yuanhua Li, Jia Lin, Yuanlin Zheng, Xianfeng Chen

引用次数: 0