Optics express最新文献_第4页

Depolarization characteristics of scattered light from metal surfaces based on near-infrared polarized supercontinuum. 基于近红外偏振超连续谱的金属表面散射光去极化特性。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2026-04-20 DOI: 10.1364/OE.595626

Youpeng Xu, Sen Guo, Li Jiang, Bo Li, Yiming Fu, Shengping Chen

{"title":"Depolarization characteristics of scattered light from metal surfaces based on near-infrared polarized supercontinuum.","authors":"Youpeng Xu, Sen Guo, Li Jiang, Bo Li, Yiming Fu, Shengping Chen","doi":"10.1364/OE.595626","DOIUrl":"https://doi.org/10.1364/OE.595626","url":null,"abstract":"Traditional polarization detection techniques are constrained by the limited dimensionality of single-wavelength information or their dependence on sunlight in passive remote sensing. To overcome these limitations, this study first employed the linearly polarized supercontinuum (SC) in the active metal surfaces polarization detection. By developing a polarized SC source with a polarization extinction ratio (PER) exceeding 25 dB in the near-infrared wavelength range of 1020-1200 nm and employing a spectral subtraction calculation method, we achieved efficient full-band measurement of the PER. The results indicated that the PER decays exponentially with increasing surface roughness when the roughness is much smaller than the incident wavelength, while an anomalous enhancement of PER occurs in specific bands when the roughness approaches the wavelength scale. It means that the SC has higher accuracy in measuring sample roughness compared to the single-wavelength laser. Furthermore, the measured PER exhibits a non-monotonic dependence on the incident angle, initially increasing to a peak value and then decreasing. Notably, the angle corresponding to the maximum PER shifts toward smaller values with increasing surface roughness. A physical model based on Kirchhoff approximation and microfacet theory was established, providing a consistent explanation for the experimental observations. The study also indicates that the wavelength dependence of the complex refractive index enables the use of linearly polarized SC for metal samples identification, providing both the \"spectral fingerprint\" and \"polarization fingerprint\" of the sample in a single step, significantly improving the differentiation ability between metals compared with the single-wavelength polarized laser. This work offers what believe to be a new paradigm for polarization remote sensing and industrial surface inspection.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"34 8","pages":"14362-14377"},"PeriodicalIF":3.3,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147818855","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

Demonstration of partially transparent thick metallic sodium in the vacuum ultraviolet spectral range: comment. 部分透明厚金属钠在真空紫外光谱范围内的演示：评论。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2026-04-20 DOI: 10.1364/OE.560729

Jacob A Gottfried, Chen Shen, Dane Morgan, Mark H Anderson, Scott T Sanders

引用次数: 0

Direct in-fiber mode excitation enabled by on-chip spatial field engineering. 通过片上空间场工程实现直接光纤模式激励。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2026-04-20 DOI: 10.1364/OE.587654

Zhuoxuan Song, Jingze Liu, Yuxuan Xiong, Xinyang Yu, Jun Gao, Siqi Yan, Ming Tang

{"title":"Direct in-fiber mode excitation enabled by on-chip spatial field engineering.","authors":"Zhuoxuan Song, Jingze Liu, Yuxuan Xiong, Xinyang Yu, Jun Gao, Siqi Yan, Ming Tang","doi":"10.1364/OE.587654","DOIUrl":"https://doi.org/10.1364/OE.587654","url":null,"abstract":"We introduce an interface-level field-mapping mechanism for direct excitation of higher-order fiber modes by engineering the spatial distribution of optical fields at the chip-fiber interface. Rather than relying on a separate on-chip mode-conversion stage followed by fiber coupling, the proposed approach establishes a correspondence between the on-chip phase-polarization distribution and the target fiber eigenmode at the fiber facet, thereby enabling selective mode generation without post-fiber conversion. Theoretical analysis identifies the field conditions required for specific target modes and predicts an idealized modal-overlap upper bound up to 97.8% under optimized emitter geometry and coupling conditions. To validate the concept, we implement the mechanism on a silicon-on-insulator platform using a grating-emitter array with programmable phase and polarization control. Experimental near-field measurements confirm selective excitation of LP12 and LP21 modes around 1550 nm, in qualitative agreement with the theoretical mode-selection behavior. Although the present proof-of-concept device does not yet reach the idealized overlap limit, the results verify the underlying field-mapping mechanism and provide a compact route toward chip-to-fiber spatial-mode manipulation for integrated mode-division-multiplexing interfaces.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"34 8","pages":"14673-14685"},"PeriodicalIF":3.3,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147818899","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

Trajectory control of a gimbaled prism for hemispherical pointing in CubeSat optical communications. 立方体卫星光通信中半球面指向框架棱镜的轨迹控制。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2026-04-20 DOI: 10.1364/OE.580830

René Rüddenklau, Lukas Rupert Rodeck, Hannes Zeihsel

{"title":"Trajectory control of a gimbaled prism for hemispherical pointing in CubeSat optical communications.","authors":"René Rüddenklau, Lukas Rupert Rodeck, Hannes Zeihsel","doi":"10.1364/OE.580830","DOIUrl":"https://doi.org/10.1364/OE.580830","url":null,"abstract":"Free-space optical communications on CubeSats require precise pointing mechanisms to maintain stable links. State-of-the-art CubeSat-sized laser communication terminals rely on satellite body pointing, which imposes constraints on system flexibility. This paper presents the proposed control strategy of a gimbaled-prism-based coarse pointing assembly for hemispherical pointing in CubeSat optical communications. The gimbal design employs a compact mechanical structure with direct-drive actuation for azimuth and elevation control. A hierarchical control strategy is implemented, combining a cascaded servo control loop with an s-curve profiler for ephemeris-based pointing and a second-order trajectory controller for fine pointing assembly offloading. Therefore, the dynamics of the low-level controller can be decoupled from the trajectory control design. The performed experimental validation includes hardware characterization, system response identification, and closed-loop performance analysis, demonstrating the capability to achieve accurate and stable pointing of the developed coarse pointing assembly. Results confirm that the proposed approach meets stringent dynamics and stability requirements while maintaining a pointing accuracy suitable for CubeSat optical communication applications.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"34 8","pages":"13803-13814"},"PeriodicalIF":3.3,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147818930","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

Tunable all-optical comb generation via harmonic locking of cascaded period-one dynamics. 通过级联周期一动力学的谐波锁定产生可调谐全光梳状。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2026-04-20 DOI: 10.1364/OE.591837

Mohammad AlMulla

{"title":"Tunable all-optical comb generation via harmonic locking of cascaded period-one dynamics.","authors":"Mohammad AlMulla","doi":"10.1364/OE.591837","DOIUrl":"https://doi.org/10.1364/OE.591837","url":null,"abstract":"This work examines frequency comb generation in a cascaded arrangement of optically injected semiconductor lasers operating within the P1 dynamic regime. The system comprises two injection stages, where the first-stage laser is driven by a continuous-wave master laser, and its output is used to inject a second slave laser. By varying the injection strength and frequency detuning at each stage, frequency-locked comb states emerge, characterized by rational winding numbers that follow a Farey tree structure. These combs result from nonlinear interactions between the P1 oscillation frequencies of the two stages and exhibit tunable comb spacing without reliance on external modulators or high-frequency RF sources. The locked bands form Arnold tongues in the injection parameter space, within which period-doubling bifurcations lead to fractional comb spacing, indicating transitions to denser frequency comb states. The results reveal that the intrinsic P1 dynamics are responsible for the optical and microwave comb formation, enabling broadly tunable spacing beyond fractional harmonics of the free-running slave laser's relaxation resonance frequency. This highlights the potential of cascaded optical injection as a compact and versatile platform for all-optical frequency comb generation in semiconductor laser systems.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"34 8","pages":"14288-14302"},"PeriodicalIF":3.3,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147818980","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

Dynamic speckle imaging reconstruction via optical-flow-guided network. 基于光流引导网络的动态散斑成像重建。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2026-04-20 DOI: 10.1364/OE.591608

Shenle Tan, Guannan He, Zhi Luo, Bo Huang

{"title":"Dynamic speckle imaging reconstruction via optical-flow-guided network.","authors":"Shenle Tan, Guannan He, Zhi Luo, Bo Huang","doi":"10.1364/OE.591608","DOIUrl":"https://doi.org/10.1364/OE.591608","url":null,"abstract":"Scattering imaging aims to recover object images from complex scattered light fields and holds significant value in fields such as biological tissue imaging and non-line-of-sight (NLOS) detection. Although numerous methods have been developed for static object scattering imaging, moving objects induce additional temporal variations in speckle patterns, presenting significant challenges for high-quality imaging under dynamic conditions. To address this issue, this paper proposes a dynamic scattering imaging reconstruction method based on optical flow constraints. This method utilizes an optical flow network to extract motion information between consecutive speckle frames, treating it as an equivalent representation of the object's motion. Consequently, relying on the reconstruction of a single speckle frame, temporal prediction is achieved through optical flow warping. The optical flow network learns the motion field from speckle sequences in an unsupervised manner, eliminating the need for ground truth optical flow labels. Compared to frame-by-frame reconstruction methods, the proposed approach significantly enhances temporal consistency while maintaining high reconstruction accuracy. Experimental results demonstrate that the proposed method achieves high-quality dynamic reconstruction in practical motion scenarios, providing a novel approach for efficient imaging in complex scattering environments.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"34 8","pages":"14534-14548"},"PeriodicalIF":3.3,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147819008","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 camera calibration for underwater binocular laser scanner via virtual-imaging. 水下双目激光扫描仪的虚拟成像高精度摄像机标定。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2026-04-20 DOI: 10.1364/OE.589181

Jinhua Zhang, Wenpan Li, Rui Chen, Qiang Shen, Chao Gao, Wei Xu, Tao Liu, Wenlong Li

{"title":"High-accuracy camera calibration for underwater binocular laser scanner via virtual-imaging.","authors":"Jinhua Zhang, Wenpan Li, Rui Chen, Qiang Shen, Chao Gao, Wei Xu, Tao Liu, Wenlong Li","doi":"10.1364/OE.589181","DOIUrl":"https://doi.org/10.1364/OE.589181","url":null,"abstract":"Accurate 3-D reconstruction of underwater objects is increasingly important for many applications, and a binocular laser scanner is a common way to achieve an underwater point cloud. However, the perspective-based binocular camera calibration method developed for in-air imaging often causes large errors in underwater 3-D reconstruction because the camera rays are refracted at the water-glass-air interfaces. To improve the accuracy of the underwater binocular laser scanner, this study establishes a binocular camera calibration method based on virtual imaging by considering multilayer refraction, which determines the refractive parameters and camera pose efficiently and accurately. The principles of the binocular laser scanning system are extended to the refractive geometry. The virtual point distribution constraint (VPDC) is employed for closed solution in binocular camera calibration, which estimates the axis, distance, and camera pose for accurate step-by-step initialization. The virtual optical center error (VOCE) is adopted for nonlinear optimization, achieving higher efficiency than forward projection without loss of accuracy. The camera calibration experiments demonstrate that the proposed method yields a more accurate closed solution (about five times and twice improvements for two configurations) and more efficient optimization (above ten times improvement) compared with existing methods. The 3-D reconstruction experiments also show improved accuracy with the proposed binocular camera calibration method.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"34 8","pages":"15305-15325"},"PeriodicalIF":3.3,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147819026","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

Nearest neighbors phase control for optical phased array communications. 光学相控阵通信的最近邻相位控制。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2026-04-20 DOI: 10.1364/OE.582535

Juan Montoya, Robert C Word, Matthew O'Donnell, Lily Wood, Tyler Hashimoto, Zachary Manning, Denise Garcia, Andrew Maxwell, Vahid Riasati, W Daniel Mack, Kevin Gaab

引用次数: 0

Optomechanical topology optimization for mirrors with wavefront aberration control: an efficient decoupled approach with application to a Cassegrain telescope. 波前像差控制反射镜的光力学拓扑优化：一种有效的解耦方法，并应用于卡塞格伦望远镜。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2026-04-20 DOI: 10.1364/OE.591551

Chong Wang, Qiangwei Zhao, Qianglong Wang, En Sun, Zhenyu Liu

{"title":"Optomechanical topology optimization for mirrors with wavefront aberration control: an efficient decoupled approach with application to a Cassegrain telescope.","authors":"Chong Wang, Qiangwei Zhao, Qianglong Wang, En Sun, Zhenyu Liu","doi":"10.1364/OE.591551","DOIUrl":"https://doi.org/10.1364/OE.591551","url":null,"abstract":"We present an efficient optomechanical topology optimization framework for lightweight, high-precision mirrors with explicit control of wavefront aberration. To reduce the dimensionality of the optomechanical interface, the mirror surface deformation is represented by a filtering basis of orthogonal surface eigenmodes. Sensitivities are decoupled through a hybrid strategy: structural sensitivities are obtained by an adjoint method, while the Jacobian from modal coefficients to Zernike aberrations is evaluated via finite differences at the current deformed configuration and periodically refreshed every 20 iterations, reducing the per-iteration optical evaluation to a single constraint call, with ray-tracing invoked only periodically to refresh the Jacobian rather than at every gradient evaluation. Reusing the factorized stiffness matrix for multiple adjoint right-hand sides further reduces computational cost. A Cassegrain primary-mirror example demonstrates effective suppression of selected Zernike terms with only a modest overhead over compliance minimization, while also revealing that simultaneous suppression of all aberration modes under multi-load conditions is physically constrained by conflicting deformation patterns.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"34 8","pages":"15361-15375"},"PeriodicalIF":3.3,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147819120","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

Off-axis varifocal augmented reality near-eye display with holographic astigmatism compensation. 离轴变焦增强现实近眼显示与全息散光补偿。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2026-04-20 DOI: 10.1364/OE.588865

Do-Hun Baek, Seong-Hyeon Cho, Woo June Choi, Young-Wan Choi

{"title":"Off-axis varifocal augmented reality near-eye display with holographic astigmatism compensation.","authors":"Do-Hun Baek, Seong-Hyeon Cho, Woo June Choi, Young-Wan Choi","doi":"10.1364/OE.588865","DOIUrl":"https://doi.org/10.1364/OE.588865","url":null,"abstract":"Volume holographic grating (VHG)-based off-axis optical combiners supersede conventional macro-optics with thin flat optics. However, VHG-based optics suffers from holographic astigmatism, leading to astigmatism aberration. This issue becomes markedly more severe in varifocal optics implemented under the off-Bragg conditions. Nevertheless, holographic astigmatism can be alleviated by the asymmetric grating vector in VHGs. We propose the off-axis varifocal-based AR-NED with transmission- and reflection-type holographic lenses. These holographic lenses are designed to compensate for holographic astigmatism by counteracting the asymmetric grating vector. This scheme is analyzed by the k-vector diagram and lens equation of both holographic lenses. The proposed off-axis varifocal optics is validated by the AR demonstration using the focus tunable lens. Ultimately, across a depth range of 0 to 3.3 diopters, the experimental results maintain a modulation transfer function of 0.5 around 9 lp/mm and an average laser speckle contrast of 6.3%, without significant degradation in image quality during dynamic focal plane shifts, and with improved astigmatism correction.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"34 8","pages":"14931-14942"},"PeriodicalIF":3.3,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147819197","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