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Robust terahertz polarization analysis based on a unit-scale polarization-multiplexed metasurface. 基于单位尺度偏振复用超表面的鲁棒太赫兹偏振分析。
IF 3.3 2区 物理与天体物理
Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.572982
Yu Wang, Jierong Cheng, Fei Fan, Shengjiang Chang
{"title":"Robust terahertz polarization analysis based on a unit-scale polarization-multiplexed metasurface.","authors":"Yu Wang, Jierong Cheng, Fei Fan, Shengjiang Chang","doi":"10.1364/OL.572982","DOIUrl":"https://doi.org/10.1364/OL.572982","url":null,"abstract":"<p><p>In the terahertz band corresponding to molecular vibration-rotation transitions, polarization encodes rich material information, rendering polarization analysis crucial for sensing and imaging. To overcome limitations of existing methods, including reliance on multiple components, susceptibility to non-uniformity, and complex polarization information extraction processes, we propose a new method, to the best of our knowledge, for polarization analysis through a single polarization-multiplexed metasurface. By independently focusing <i>x</i>-, <i>y</i>-, 45-, and left-handed circular polarization into four spots, a linear mapping between the spot intensities and Stokes parameters is established via a calibrated measurement matrix. Leveraging precise Jones matrix engineering and wavelength-scale meta-atom polarization multiplexing, arbitrary polarization states are accurately reconstructed with resilience to illumination non-uniformity. This method holds significant promise for terahertz polarization analysis and imaging applications.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"6193-6196"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207163","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
Angle-independent topological interface states in one-dimensional photonic crystal heterostructures containing hyperbolic metamaterials: erratum. 含双曲型超材料的一维光子晶体异质结构中的不依赖角度的拓扑界面态：勘误。
IF 3.3 2区 物理与天体物理
Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.571521
Qian Wei, Dayu Bi, Xin Qi, Mina Ren, Feng Wu
{"title":"Angle-independent topological interface states in one-dimensional photonic crystal heterostructures containing hyperbolic metamaterials: erratum.","authors":"Qian Wei, Dayu Bi, Xin Qi, Mina Ren, Feng Wu","doi":"10.1364/OL.571521","DOIUrl":"https://doi.org/10.1364/OL.571521","url":null,"abstract":"<p><p>This erratum corrects the typing errors of the structural formulas of PC1, PC2, and the heterostructure in the original paper, Opt. Lett.50, 451 (2025)10.1364/OL.549425. The correction does not affect the results of the original paper.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"5997"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207166","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
Ultra-low-complexity weight-sharing trigonometric nonlinear equalizer for beyond net-200-Gb/s/λ short-reach optical interconnects: publisher's note. 超net- 200gb /s/λ短距离光互连的超低复杂度权重共享三角非线性均衡器：发布者说明。
IF 3.3 2区 物理与天体物理
Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.575482
Junwei Zhang, Heyun Tan, Fan Li, Alan Pak Tao Lau, Zhaohui Li, Chao Lu
{"title":"Ultra-low-complexity weight-sharing trigonometric nonlinear equalizer for beyond net-200-Gb/s/λ short-reach optical interconnects: publisher's note.","authors":"Junwei Zhang, Heyun Tan, Fan Li, Alan Pak Tao Lau, Zhaohui Li, Chao Lu","doi":"10.1364/OL.575482","DOIUrl":"https://doi.org/10.1364/OL.575482","url":null,"abstract":"<p><p>This publisher's note contains a correction to Opt. Lett.49, 5937 (2024)10.1364/OL.535047.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"6002"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207209","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
Fast multispectral imaging via hybrid-encoded LED illumination and a lightweight deep-learning model. 通过混合编码LED照明和轻量级深度学习模型实现快速多光谱成像。
IF 3.3 2区 物理与天体物理
Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.572715
Yijia Zeng, Xin Wang, Lihong Jiang, Jian-Wu Qi, Zijian Lin, Tingbiao Guo, Sailing He
{"title":"Fast multispectral imaging via hybrid-encoded LED illumination and a lightweight deep-learning model.","authors":"Yijia Zeng, Xin Wang, Lihong Jiang, Jian-Wu Qi, Zijian Lin, Tingbiao Guo, Sailing He","doi":"10.1364/OL.572715","DOIUrl":"https://doi.org/10.1364/OL.572715","url":null,"abstract":"<p><p>Active LED-based spectral imaging systems provide flexibility and cost-efficiency but suffer from poor temporal resolution due to the need to individually activate LEDs with different light-emitting wavelengths. This work presents a fast spectral imaging scheme leveraging hybrid-encoded LED illumination and a lightweight deep-learning model, LiteSpectralNet (LSNet). It simultaneously activates multiple LEDs in each measurement, significantly enhancing the encoding efficiency compared to traditional sequential methods. LSNet, a one-dimensional convolutional neural network, effectively reconstructs spectra from these compressed measurements. Experimental results demonstrate an 8.2-fold reduction in total exposure time and a 54% reduction in data storage. This method offers 180.5-fold acceleration in reconstruction speed over traditional approaches, with comparable spectral imaging performance, providing an efficient solution for active multispectral imaging.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"6177-6180"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207226","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
Half-cycle light pulse generation via femtosecond laser-induced plasma mirror. 利用飞秒激光诱导等离子体反射镜产生半周期光脉冲。
IF 3.3 2区 物理与天体物理
Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.574342
Rostislav Arkhipov, Anton Pakhomov, Olga Diachkova, Mikhail Arkhipov, Nikolay Rosanov
{"title":"Half-cycle light pulse generation via femtosecond laser-induced plasma mirror.","authors":"Rostislav Arkhipov, Anton Pakhomov, Olga Diachkova, Mikhail Arkhipov, Nikolay Rosanov","doi":"10.1364/OL.574342","DOIUrl":"https://doi.org/10.1364/OL.574342","url":null,"abstract":"<p><p>We demonstrate a novel, to the best of our knowledge, mechanism for generating half-cycle unipolar light pulses through reflection of an intense single-cycle femtosecond laser pulse from a transient plasma layer. The leading pulse edge ionizes a thin medium layer, while the trailing edge reflects from the plasma boundary, producing subcycle unipolar waveforms. Our 1D Maxwell-plasma model reveals universal scaling laws for pulse shape versus plasma density and thickness, showing how thin layers yield isolated half-cycle pulses, while thicker layers produce rectangular waveforms. This all-optical approach enables attosecond field synthesis without complex phase-matching requirements, bridging classical electrodynamics and ultrafast optics for quantum control applications.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"6181-6184"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207273","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
Low-complexity cluster-assisting look-up-table-based Volterra decision-feedback equalizer for IM/DD systems: publisher's note. 用于IM/DD系统的基于Volterra决策反馈均衡器的低复杂度集群辅助查找表：发布者注释。
IF 3.3 2区 物理与天体物理
Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.575484
Junwei Zhang, Heyun Tan, Alan Pak Tao Lau, Zhaohui Li, Chao Lu
{"title":"Low-complexity cluster-assisting look-up-table-based Volterra decision-feedback equalizer for IM/DD systems: publisher's note.","authors":"Junwei Zhang, Heyun Tan, Alan Pak Tao Lau, Zhaohui Li, Chao Lu","doi":"10.1364/OL.575484","DOIUrl":"https://doi.org/10.1364/OL.575484","url":null,"abstract":"<p><p>This publisher's note contains a correction to Opt. Lett.50, 992 (2025)10.1364/OL.551003.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"6003"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207275","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
Orbital angular momentum entanglement experiment bounding the predictive power of physical theories. 轨道角动量纠缠实验束缚了物理理论的预测能力。
IF 3.3 2区 物理与天体物理
Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.568058
Jianqi Sheng, Dongkai Zhang, Lixiang Chen
{"title":"Orbital angular momentum entanglement experiment bounding the predictive power of physical theories.","authors":"Jianqi Sheng, Dongkai Zhang, Lixiang Chen","doi":"10.1364/OL.568058","DOIUrl":"https://doi.org/10.1364/OL.568058","url":null,"abstract":"<p><p>Whether quantum mechanics is predictively complete remains a fundamental question in its foundations. While most investigations have concentrated on two-dimensional systems, high-dimensional systems are more general and hold broader applicability. Extending the non-extensibility theorem by Colbeck and Renner [Nat. Commun.2, 411 (2011)10.1038/ncomms1416], we demonstrate that no alternative theory can enhance the predictive power of quantum mechanics in arbitrary dimensions. By linking the maximal predictive power achievable to experimentally observable correlations, we establish optimal experimental bounds exploiting orbital angular momentum entangled photon pairs. These results impose strict constraints and rule out a broad class of hidden-variable models, including Bell-type and Leggett-type theories, thereby reinforcing the completeness of quantum theory and advancing high-dimensional quantum cryptography.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"5985-5988"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207100","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 coherent Raman spectroscopy based on single-pulse spectral-domain ghost imaging. 基于单脉冲谱域鬼影成像的宽带相干拉曼光谱。
IF 3.3 2区 物理与天体物理
Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.573954
Jing Hu, Tianjian Lv, Zhaoyang Wen, Wending Huang, Ming Yan, Heping Zeng
{"title":"Broadband coherent Raman spectroscopy based on single-pulse spectral-domain ghost imaging.","authors":"Jing Hu, Tianjian Lv, Zhaoyang Wen, Wending Huang, Ming Yan, Heping Zeng","doi":"10.1364/OL.573954","DOIUrl":"https://doi.org/10.1364/OL.573954","url":null,"abstract":"<p><p>Broadband coherent anti-Stokes Raman scattering (CARS) spectroscopy plays a vital role in chemical sensing and label-free vibrational imaging, yet conventional methods suffer from limited acquisition speeds and complex detection schemes. Here, we demonstrate high-speed broadband CARS enabled by nonlinear spectral ghost imaging combined with time-stretch dispersive Fourier-transform (TS-DFT) spectroscopy. We exploit modulation instability to generate a stochastic supercontinuum as the Stokes source and a synchronized narrowband pulse as the pump. Reference Stokes spectra are captured at 60.5 MHz via TS-DFT, while anti-Stokes signals are detected using a single non-spectrally resolving photodetector. Correlating these signals enables broadband CARS spectral reconstruction across the fingerprint (600-1600 cm<sup>-1</sup>) and C-H stretching (2600-3400 cm<sup>-1</sup>) regions with 13 cm<sup>-1</sup> resolution and microsecond-scale acquisition times. Our method enables robust signal recovery without the need for spectral resolution in the detection path, facilitating measurements in complex biological and chemical environments.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"6201-6204"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207164","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
Speckle pattern analysis using differential dynamic matrix. 基于差分动态矩阵的散斑模式分析。
IF 3.3 2区 物理与天体物理
Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.564582
Mahsa Asghari, Elaheh Nazari, Mehdi Shafiei Aporvari, Vahideh Farzam Rad, Ali-Reza Moradi
{"title":"Speckle pattern analysis using differential dynamic matrix.","authors":"Mahsa Asghari, Elaheh Nazari, Mehdi Shafiei Aporvari, Vahideh Farzam Rad, Ali-Reza Moradi","doi":"10.1364/OL.564582","DOIUrl":"https://doi.org/10.1364/OL.564582","url":null,"abstract":"<p><p>Dynamic laser speckle analysis (LSA) is a sensitive, noninvasive, and remote technique that has been applied to study different phases of matter in various phenomena in life science and industry. On the other hand, differential dynamic microscopy (DDM) is an efficient method for the collective and quantitative analysis of microscopic particle suspensions. DDM uses successive recorded microscopy images to extract information about the diffusion and scattering functions. However, in several applications, the microscopy images include additional noises caused by turbulent dynamics of the sample, contaminations, or aberrations in the imaging system. Here, we extend DDM to LSA, which is like considering the extreme case of noisy images for DDM analysis. We show that DDM can provide additional analysis parameters for LSA, and, more importantly, the speckle patterns can be directly analyzed using DDM. To validate the proposed DDM-LSA technique, we apply it to the analysis of drying paint.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"5961-5964"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207208","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
High-accuracy eye tracking ( <0.5°) method via 1D rotational MEMS mirror scanning. 基于1D旋转MEMS反射镜扫描的高精度眼动追踪（<0.5°）方法。
IF 3.3 2区 物理与天体物理
Optics letters Pub Date : 2025-10-01 DOI: 10.1364/OL.573235
Tianxiang Liang, Haoyu Tan, Ziqi Zhao, Yuan Liu, Tong Wu, Xiaoming Huang, Cao Xia, Minqiang Li, Hong Wei, Wenchuang Walter Hu, Yuanlin Xia, Zhuqing Wang
{"title":"High-accuracy eye tracking ( <0.5°) method via 1D rotational MEMS mirror scanning.","authors":"Tianxiang Liang, Haoyu Tan, Ziqi Zhao, Yuan Liu, Tong Wu, Xiaoming Huang, Cao Xia, Minqiang Li, Hong Wei, Wenchuang Walter Hu, Yuanlin Xia, Zhuqing Wang","doi":"10.1364/OL.573235","DOIUrl":"https://doi.org/10.1364/OL.573235","url":null,"abstract":"<p><p>Eye tracking technology has shown a wide range of applications, while conventional camera-based systems face an inherent trade-off between power consumption and accuracy. In this work, we proposed what we believe to be a novel eye tracking method that utilizes an 8 kHz-driven MEMS mirror to achieve one-dimensional (1D) rotational scanning. By modulating the duty cycle and phase of the drive signal, the laser beam is precisely scanned to the cornea surface of the eye. Gaze direction is then estimated by analyzing the peak time interval of the reflected signal, thereby minimizing computational load and reducing power consumption. Experimental results show that the system achieves high accuracy of less than 0.5° and remains stable during simulated saccade while ensuring low latency. This work offers a viable pathway toward highly integrated next-generation eye tracking systems.</p>","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 19","pages":"6197-6200"},"PeriodicalIF":3.3,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145207258","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
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