Optics letters最新文献

Ring-cavity-dumped single-frequency Nd:YVO₄ laser. 环形腔倾倒单频Nd:YVO4激光器。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2026-09-01 DOI: 10.1364/OL.613766

Zeqi Yang, Bo Chen, Jingchong Wang, Zhenhua Cong, Zhigang Zhao, Zhaojun Liu

引用次数: 0

Dual-mode fiber-optic refractive-index gas thermometry with primary anchoring and continuous temperature tracking. 双模光纤折射率气体测温仪，具有主锚定和连续温度跟踪。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2026-09-01 DOI: 10.1364/OL.609964

Musaddeque Syed, Ming Han

{"title":"Dual-mode fiber-optic refractive-index gas thermometry with primary anchoring and continuous temperature tracking.","authors":"Musaddeque Syed, Ming Han","doi":"10.1364/OL.609964","DOIUrl":"https://doi.org/10.1364/OL.609964","url":null,"abstract":"Extending fiber-optic refractive-index gas thermometry beyond primary-only operation, we report a dual-mode argon-filled Fabry-Perot thermometer in which the same cavity first establishes a primary temperature anchor and then performs continuous secondary-mode tracking. The primary anchor is obtained from two-pressure fringe shifts using a virial-coefficient refractivity model. During secondary operation, pressure cycling is stopped, and temperature is recovered from the monitored fringe wavelength and gas pressure using a model that includes argon refractivity, pressure-induced cavity strain, and fused-silica thermal expansion. From 310 to 1013 K, secondary-mode temperatures agreed with a reference thermocouple with 0.21 K RMSE and 0.47 K maximum error; 45-min natural furnace cooldowns were also tracked from nearby anchors with close agreement. The dual-mode method retains the empirical-calibration-free primary measurement as an in-situ reference while enabling simpler continuous tracking between anchors, addressing a practical limitation of primary-only fiber-optic refractive-index gas thermometry for high-temperature applications.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"51 17","pages":"4956-4959"},"PeriodicalIF":3.3,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148875407","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

Broadband chaos generation using enhanced optical frequency comb injection. 利用增强光频梳注入产生宽带混沌。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2026-09-01 DOI: 10.1364/OL.609363

Haokai Xiong, Enxian Zhao, Qiang Cai, Yujun Liufu, Ye Fan, Pu Li, Yuwen Qin, Yuncai Wang

引用次数: 0

Yb³⁺ sensitized Mo³⁺ spin-flip luminescence through downconversion and upconversion in halide perovskites. Yb3+在卤化物钙钛矿中通过下转换和上转换致敏Mo3+自旋翻转发光。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2026-09-01 DOI: 10.1364/OL.611887

Boxiang Yang, Jia-Kai Chen, Wenfeng Xue, Hong-Tao Sun, Biao Dong

{"title":"Yb3+ sensitized Mo3+ spin-flip luminescence through downconversion and upconversion in halide perovskites.","authors":"Boxiang Yang, Jia-Kai Chen, Wenfeng Xue, Hong-Tao Sun, Biao Dong","doi":"10.1364/OL.611887","DOIUrl":"https://doi.org/10.1364/OL.611887","url":null,"abstract":"Mo3+-activated halide perovskites can exhibit narrowband spin-flip luminescence through downconversion and upconversion. However, because Mo3+ absorbs weakly in the near-infrared (NIR) region, NIR excitation generally produces only weak room-temperature Mo3+ downconversion emission and Mo3+ upconversion emission only at low temperatures. Here, we demonstrate that Yb3+ effectively sensitizes Mo3+ in Cs2NaInCl6 double perovskites. Under 920-nm excitation, Yb3+ → Mo3+ energy transfer markedly enhances the 1095-nm Mo3+ spin-flip emission. This sensitization also enables, to the best of our knowledge, the first room-temperature observations of both 1850-nm NIR emission arising from the 2T2g → 2Eg/2T1g inter-excited-state transition and 700-nm Mo3+ upconversion emission. Our work establishes Yb3+ sensitization as an effective strategy for accessing NIR-excited, room-temperature Mo3+-centered emission bands in halide perovskites.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"51 17","pages":"4936-4939"},"PeriodicalIF":3.3,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148875454","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

Wavelength stabilization of high-power blue laser diodes using large-area femtosecond fiber Bragg gratings. 利用大面积飞秒光纤光栅实现高功率蓝色激光二极管的波长稳定。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2026-09-01 DOI: 10.1364/OL.606253

Ludovic de Repentigny, François Trépanier, Martin Bernier

引用次数: 0

Image-free inference for 3D object classification via multi-view single-pixel detection. 基于多视图单像素检测的无图像推理3D目标分类。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2026-09-01 DOI: 10.1364/OL.608794

Siyuan Wang, Muyuan Liu, Jinghao Xu, Shengyi Li, Huiqin Gao, Jinzhou Bai, An Pan

{"title":"Image-free inference for 3D object classification via multi-view single-pixel detection.","authors":"Siyuan Wang, Muyuan Liu, Jinghao Xu, Shengyi Li, Huiqin Gao, Jinzhou Bai, An Pan","doi":"10.1364/OL.608794","DOIUrl":"https://doi.org/10.1364/OL.608794","url":null,"abstract":"Image-free classification enables direct target recognition from single-pixel measurements without image reconstruction during inference, offering high sensing efficiency and low computational cost. However, existing approaches mainly rely on single-view observations and therefore cannot fully exploit the intrinsic three-dimensional (3D) structural information of real-world objects. Here, we propose a multi-view single-pixel detection framework for image-free inference of 3D object classes. By leveraging optical reciprocity, synchronized detectors acquire complementary view-dependent responses under identical spatial modulation patterns, enabling efficient extraction and fusion of stereoscopic features. A hybrid optical-neural architecture is developed, in which convolution kernels learned offline are converted into binary modulation patterns. A multi-view aircraft dataset containing five categories of 3D targets was established using a synchronized three-detector single-pixel imaging system. Experiments on the dataset demonstrate that multi-view fusion consistently outperforms single-view baselines. Statistical evaluation over 25 independent training runs shows that the proposed framework achieves 99.97% ± 0.06% with seven patterns. This work provides an effective route toward high-speed image-free 3D object perception in resource-constrained sensing applications.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"51 17","pages":"4769-4772"},"PeriodicalIF":3.3,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148875537","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

Metafibers for highly sensitive carbon dioxide sensing. 用于高灵敏度二氧化碳传感的超纤材料。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2026-09-01 DOI: 10.1364/OL.607837

Rujun Zhou, Mengyu Shi, Zuxi Ouyang, Peishuai Wang, Wei Wang, Yunlian Ding, Delin You, Qiang Ling, Zhangwei Yu, Xinyu Sun, Ding Zhao, Min Qiu, Daru Chen, Si Luo

{"title":"Metafibers for highly sensitive carbon dioxide sensing.","authors":"Rujun Zhou, Mengyu Shi, Zuxi Ouyang, Peishuai Wang, Wei Wang, Yunlian Ding, Delin You, Qiang Ling, Zhangwei Yu, Xinyu Sun, Ding Zhao, Min Qiu, Daru Chen, Si Luo","doi":"10.1364/OL.607837","DOIUrl":"https://doi.org/10.1364/OL.607837","url":null,"abstract":"Despite the urgent need for high-sensitivity, fast-response, ambient-temperature CO2 sensing in environmental, industrial, and biomedical applications, conventional optical platforms suffer from weak light-matter interactions and poor signal contrast. Here, we propose and demonstrate a highly sensitive CO2 gas sensor based on a metafiber platform integrated with a functional polymer thin film. The sensor consists of a gold nanohole array fabricated on the core of a single-mode fiber jumper using physical vapor deposition and focused ion beam milling, followed by dip-coating of a polyhexamethylene biguanide (PHMB) layer as the CO2-sensitive material. Finite-element simulations reveal pronounced electric field enhancement at the nanohole edges and a refractive-index sensitivity of ∼600 nm/RIU. Experimental characterizations show a CO2 sensitivity of 5.77 pm/ppm in the concentration range of 200-600 ppm, with response and recovery times of about 4.5 min and 7 min, respectively. The sensor also exhibits good repeatability and stability over consecutive sensing cycles. This metafiber-based architecture provides a promising and scalable strategy for developing miniaturized, high-performance optical fiber gas sensors.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"51 17","pages":"4924-4927"},"PeriodicalIF":3.3,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148875635","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

Scalable compact on-chip multimode circulator with low loss and broad bandwidth. 具有低损耗和宽带宽的可扩展紧凑片上多模环行器。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2026-09-01 DOI: 10.1364/OL.607582

Manzhuo Wang, Peiyu Li, Yu Xin, Xiaoqiang Sun, Songyue Liu, Lu Sun, Daming Zhang

引用次数: 0

721 W narrow-linewidth Er/Yb co-doped fiber amplifier enabled by dual-wavelength pumping. 采用双波长泵浦实现的721w窄线宽Er/Yb共掺光纤放大器。

IF 3.3 2区物理与天体物理

Optics letters Pub Date : 2026-09-01 DOI: 10.1364/OL.609159

Guanzhong Li, Yuexuan Cai, Guohao Fu, Pei Li, Qirong Xiao, Dan Li, Ping Yan

引用次数: 0

Canonical basis for structured light. 结构光的规范基础。