Optics letters最新文献_第9页

Direct monocular vision algorithm based on deep constraints of point and line features fusion. 基于深度约束的点与线特征融合的直接单目视觉算法。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.552010

Keqiang Bai, Xiuhong Li, Yalan Zhu, Feiyan Wang

{"title":"Direct monocular vision algorithm based on deep constraints of point and line features fusion.","authors":"Keqiang Bai, Xiuhong Li, Yalan Zhu, Feiyan Wang","doi":"10.1364/OL.552010","DOIUrl":"https://doi.org/10.1364/OL.552010","url":null,"abstract":"The development of technology and the rapid increase of computing power have enabled the wide application of simultaneous localization and mapping (SLAM) in smart devices. Nevertheless, visual odometry based on the direct method exhibits inaccurate pose estimation in structured environments, because it ignores diverse line segment information, constraints of associated points, and estimated position information.Objective: This study aimed to address the issue of inaccurate pose estimation in structured environments for direct method-based visual odometry by proposing a direct monocular vision algorithm based on deep constraints of point and line features (DMVA-PLF), with the goal of improving pose estimation accuracy.Methods: The algorithm integrated line features from the environment into visual odometry through colinear and deep constraints, combined with historical pose information, to more effectively utilize image features and optimize the pose estimation process.Achievements: Experimental results demonstrated that the DMVA-PLF significantly improved pose estimation accuracy by efficiently leveraging image features, outperforming traditional methods in structured environments.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"3804-3807"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289507","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

Free-space creation of multipole high-order non-integer Bessel beams. 多极高阶非整数贝塞尔梁的自由空间创建。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.566000

Zhenhua Yang, Yao Yan, Huinan Yang, Mingxu Su, Junshan Ma, Ning Wang, Zhengxiang Shen, Guanxue Wang, Songlin Zhuang

引用次数: 0

High-resolution visible light OCT of the human retina with combined superluminescent diodes. 结合超发光二极管的人视网膜高分辨率可见光OCT。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.560148

Alok K Gupta, Ruoyu Meng, Marcus Duelk, Kenneth Wald, Vivek J Srinivasan

{"title":"High-resolution visible light OCT of the human retina with combined superluminescent diodes.","authors":"Alok K Gupta, Ruoyu Meng, Marcus Duelk, Kenneth Wald, Vivek J Srinivasan","doi":"10.1364/OL.560148","DOIUrl":"https://doi.org/10.1364/OL.560148","url":null,"abstract":"High-resolution optical coherence tomography (OCT) requires broadband, spatially coherent light sources. Today, the source of choice for visible light OCT, the supercontinuum (SC), is bulky, expensive, and prone to excess noise. Here we demonstrate high-resolution visible light OCT of the human retina with a combined superluminescent diode (SLD) source. The source is longer in wavelength than the high blue light hazard range but shorter in wavelength than the high photopic efficiency range, ensuring subject safety and comfort. We report an axial resolution of 3.2 µm in the retina. We find that Bruch's membrane is well-delineated in subjects without ocular pathology, even though the axial resolution is ∼3× coarser than SC visible light OCT. Imaging of intermediate age-related macular degeneration is also shown. Within the cyan-green wavelength range of the SLD, optical density spectra resemble those of macular pigments. While the combined SLD approach does not achieve the micrometer-scale resolution of the SC, it potentially reduces the cost and complexity of visible light OCT while providing novel disease-relevant biomarkers, to the best of our knowledge, in human retina.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 12","pages":"4070-4073"},"PeriodicalIF":3.1,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144289546","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

Tensile-strained GeSn/Ge rolled-up nanomembrane with enhanced photoluminescence. 具有增强光致发光性能的拉伸应变GeSn/Ge卷曲纳米膜。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.560771

You Jin Kim, Yu-Cheng Yeh, Po-Rei Huang, Guo-En Chang, Munho Kim

引用次数: 0

Topological Tamm edge states. 拓扑Tamm边态。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-15 DOI: 10.1364/OL.565242

Chuxin Dai, Tian Sang, Guofeng Yang, Yueke Wang

引用次数: 0

Coherent Smith-Purcell radiation of a hollow electron beam from a metasurface. 来自超表面的空心电子束的相干史密斯-珀塞尔辐射。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-01 DOI: 10.1364/OL.563589

D Yu Sergeeva, D V Karlovets, A A Tishchenko

引用次数: 0

Compact snapshot multispectral-depth imaging system with shared-modal multi-bandpass lenslet array (SMLA). 基于共享模态多带通透镜阵列的紧凑快照多光谱深度成像系统。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-01 DOI: 10.1364/OL.563215

Zhiwei Deng, Zhan Shi, Chenglong Huang, Shiqiao Li, Xun Cao

引用次数: 0

Kalman filter based spatial-compensated 3D microscopy. 基于卡尔曼滤波的空间补偿三维显微镜。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-01 DOI: 10.1364/OL.561790

Yian Huang, Huazhen Liu, Lin Li, Jiamiao Yang

{"title":"Kalman filter based spatial-compensated 3D microscopy.","authors":"Yian Huang, Huazhen Liu, Lin Li, Jiamiao Yang","doi":"10.1364/OL.561790","DOIUrl":"https://doi.org/10.1364/OL.561790","url":null,"abstract":"Extended depth of field (EDOF) achieves high-resolution 3D microscopic measurement by multi-focus imaging and is widely applied in industrial inspection and biomedical research. However, the inherent trade-off between depth of field and lateral resolution of the microscope lens results in EDOF's axial resolution being significantly lower than its lateral resolution, limiting its axial recognition sensitivity. To address this, we propose a Kalman filter based spatial-compensated 3D microscopy measurement method. It introduces the multi-view measurement strategy and capitalizes on the anisotropic resolution characteristics of the single-view EDOF. By employing a Kalman filter to fuse multi-view measurement data, the proposed method achieves compensation from higher lateral resolution to lower axial. While expanding the spatial resolution field-of-view, we significantly enhance axial resolution. Experimental results demonstrate that, compared to conventional EDOF, the proposed method improves the axial resolution of the original single-view by approximately 75%. It effectively reduces the anisotropy of resolution and offers a novel, to the best of our knowledge, approach for more comprehensively characterizing the 3D morphology of complex surfaces.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 11","pages":"3592-3595"},"PeriodicalIF":3.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144187505","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

Learnable fractional Fourier transform for high-quality computer-generated holography. 可学习的分数傅立叶变换用于高质量的计算机生成全息。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-01 DOI: 10.1364/OL.561347

Qingwei Liu, Jing Chen, Leshan Wang, Bingsen Qiu, Yongtian Wang

{"title":"Learnable fractional Fourier transform for high-quality computer-generated holography.","authors":"Qingwei Liu, Jing Chen, Leshan Wang, Bingsen Qiu, Yongtian Wang","doi":"10.1364/OL.561347","DOIUrl":"https://doi.org/10.1364/OL.561347","url":null,"abstract":"Deep learning-based computer-generated holography is a promising method for achieving high-quality holographic displays. However, most existing methods are restricted to extracting features from fixed spatial or frequency domains for generating phase-only holograms (POHs), resulting in the loss of finer details in holographic imaging. To overcome this limitation, we propose a complex-valued fractional Fourier network (CFrFNet) that integrates the fractional Fourier transform (FrFT) within a unified spatial-frequency framework to produce high-fidelity POHs. A fractional Fourier neural module (FrFNM) is designed to access arbitrary fractional domains between the spatial and frequency domains after a FrFT. To accommodate the characteristics of the fractional domain, a multiscale feature extraction block (MFEB) is proposed to extract rich spatial-frequency joint features. We also introduced a learnable strategy to adaptively optimize the fractional order of the FrFT during the training process. Both simulations and experiments validate the effectiveness of our approach, highlighting its potential to significantly enhance the quality of holographic imaging.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 11","pages":"3752-3755"},"PeriodicalIF":3.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144187508","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 field manipulation using micrometer-scale diffractive surfaces fabricated by two-photon nanolithography. 利用双光子纳米光刻技术制备微米级衍射面进行光场操纵。

IF 3.1 2区物理与天体物理

Optics letters Pub Date : 2025-06-01 DOI: 10.1364/OL.560665

Yuting Guo, Chao Meng, Jiayue Zhang, Wei Xin, Simone Lamon, Qiming Zhang, Min Gu, Haoyi Yu

{"title":"Light field manipulation using micrometer-scale diffractive surfaces fabricated by two-photon nanolithography.","authors":"Yuting Guo, Chao Meng, Jiayue Zhang, Wei Xin, Simone Lamon, Qiming Zhang, Min Gu, Haoyi Yu","doi":"10.1364/OL.560665","DOIUrl":"https://doi.org/10.1364/OL.560665","url":null,"abstract":"The manipulation of light at the micrometer scale has been the core technology for the recent development of diffractive optics, especially for optical displays and diffractive neural networks (NNs). However, the factors that influence the diffraction efficiency of the diffractive surfaces have not been well understood. Taking advantage of a simplified physics-driven neural network model and two-photon nanolithography (TPN) technology, we theoretically and experimentally investigated the factors that influence the diffraction efficiency of the diffractive surfaces, such as diffraction propagation distances and a variety of diffraction patterns with different geometrical features, the result of which enables the generation of two-dimensional images with high diffraction efficiencies through the diffractive surfaces with a thickness of less than 1 μm and a size of 100 μm by 100 μm. The demonstrated results are of great significance for optical light manipulation in optical display and computational imaging using free-space diffractive optical elements.","PeriodicalId":19540,"journal":{"name":"Optics letters","volume":"50 11","pages":"3748-3751"},"PeriodicalIF":3.1,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144187509","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