Optics express最新文献_第3页

Second-harmonic chiroptical scattering spectroscopy from plasmonic nanohelices. 等离子体纳米螺旋的二次谐波散射光谱。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2026-04-20 DOI: 10.1364/OE.582687

Ben J Olohan, Hoyeon Choi, Hyunah Kwon, Ruidong Ji, Bradleigh Kerrigan, Oliver R J Nedderman, G Dan Pantoș, Peer Fischer, Ventsislav K Valev

{"title":"Second-harmonic chiroptical scattering spectroscopy from plasmonic nanohelices.","authors":"Ben J Olohan, Hoyeon Choi, Hyunah Kwon, Ruidong Ji, Bradleigh Kerrigan, Oliver R J Nedderman, G Dan Pantoș, Peer Fischer, Ventsislav K Valev","doi":"10.1364/OE.582687","DOIUrl":"https://doi.org/10.1364/OE.582687","url":null,"abstract":"Chiral harmonic scattering has emerged as a powerful nonlinear optical tool for characterizing chiral nanostructures in solution, yet its applicability has been limited by narrow spectral coverage and a lack of comparative insight with linear chiroptical effects. Here, we demonstrate broadband second-harmonic (SH) chiroptical scattering using gold and silver plasmonic nanohelices, spanning a 150 nm fundamental wavelength range (710-860 nm). By resolving nonlinear ellipticity spectra at ten discrete wavelengths, we uncover spectral trends that differ between materials. Notably, we observe correspondences between the circular dichroism (CD) spectra in the linear optical regime and SH ellipticity spectra. This correspondence is consistent with an intuitive, minimal model of hyper-Rayleigh scattering. Furthermore, we compare right-angled and forward scattering geometries, revealing a geometry-dependent contrast again consistent with the hyper-Rayleigh scattering regime in both materials. This work establishes the feasibility of spectrally-resolved nonlinear chiroptical analysis and provides insights into the physical processes linking linear and nonlinear optical activity in plasmonic nanostructures.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"34 8","pages":"14662-14672"},"PeriodicalIF":3.3,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147818879","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

Electro-optic tunable racetrack resonator based on periodically poled lithium niobate on insulator. 基于周期性极化铌酸锂绝缘体的电光可调谐赛道谐振器。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2026-04-20 DOI: 10.1364/OE.591070

Xuejing Cui, Xiaopeng Hu, Kaihong Luo, Yong Zhang

{"title":"Electro-optic tunable racetrack resonator based on periodically poled lithium niobate on insulator.","authors":"Xuejing Cui, Xiaopeng Hu, Kaihong Luo, Yong Zhang","doi":"10.1364/OE.591070","DOIUrl":"https://doi.org/10.1364/OE.591070","url":null,"abstract":"High-performance integrated photonic devices based on micro-ring resonators have been proposed successively owing to their multifunctional properties. However, their practical applications are often limited by the lack of fast modulation capability at a predefined resonant wavelength. In this work, we propose an all-pass lithium niobate on insulator (LNOI) racetrack resonator with an integrated periodically poled lithium niobate (PPLN) structure. The internal PPLN structure works as an electro-optically (EO) tunable Bragg reflector, enabling controllable coupling between the two circulating modes of the resonator at a fixed resonant wavelength. Consequently, the output reflectivity and transmittivity of the device can be dynamically modulated over almost the full range (0-1), and their corresponding full width at half maximum (FWHM) can be tuned up to 1.1 nm. The proposed scheme operates free of free spectral range (FSR) limitations. Moreover, the device enables a functional transfer from a single-wavelength filter to a tunable dual-wavelength filter. The proposed device has potential applications in laser engineering, EO modulators and switches, filters, and sensors for optical computing, communications, and networks.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"34 8","pages":"14508-14517"},"PeriodicalIF":3.3,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147818948","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

Multi-dipole weighted method for accurate light extraction simulation of micro-LEDs. 微型led精确光提取仿真的多偶极子加权法。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2026-04-20 DOI: 10.1364/OE.592562

Lewei Lyu, Zhimin Zhu, Xianshen Zeng, Yujia Gong, Shulin Chen, Ziyang Ge, Shuming Zhang, Ze Yuan, Jiahao Kang

{"title":"Multi-dipole weighted method for accurate light extraction simulation of micro-LEDs.","authors":"Lewei Lyu, Zhimin Zhu, Xianshen Zeng, Yujia Gong, Shulin Chen, Ziyang Ge, Shuming Zhang, Ze Yuan, Jiahao Kang","doi":"10.1364/OE.592562","DOIUrl":"https://doi.org/10.1364/OE.592562","url":null,"abstract":"Accurate evaluation of the light-extraction efficiency (LEE) is critical for inorganic micro-light-emitting diodes (micro-LEDs), providing a reliable basis for device optimization and performance benchmarking toward high-brightness, energy-efficient augmented/extended reality (AR/XR) microdisplays. However, in most LEE studies, the LEE is calculated from a single dipole or averaged over a few dipoles in the multiple quantum wells (MQWs), which cannot represent the incoherent, spatially distributed emission in practical devices and may lead to inaccurate optimization. Here, we propose a multi-dipole weighted (MDW) method, in which the total LEE is obtained by a weighted summation of dipole LEEs using TCAD-derived radiative recombination fractions as their weights. The method is implemented and evaluated within a simulation framework based on both electrical and optical solvers. The MDW method is systematically compared with the single-dipole (SD) method and the multi-dipole averaging (MDA) method over different structural parameters. The results reveal the limitations of the conventional approximations and provide practical guidance for reliable optical simulation and structural design of micro-LEDs for AR/XR applications.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"34 8","pages":"14611-14622"},"PeriodicalIF":3.3,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147819050","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

HERALDS: a flexible, high-resolution volumetric endoscopy-design, calibration, and performance evaluation. 先驱：一个灵活的，高分辨率的体积内窥镜-设计，校准和性能评估。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2026-04-20 DOI: 10.1364/OE.586749

Deer Su, Chen Hu, Guanying Liang, Junyu Zhao, Zhenqian Han, Zhipeng Ma, Liang Li, Changliang Guo, Weida Gao, Liying Qu, Guanyu Shang, Bo Qu, Xiangyan Ding, Haoyu Li, Weisong Zhao, Wenhao Liu

{"title":"HERALDS: a flexible, high-resolution volumetric endoscopy-design, calibration, and performance evaluation.","authors":"Deer Su, Chen Hu, Guanying Liang, Junyu Zhao, Zhenqian Han, Zhipeng Ma, Liang Li, Changliang Guo, Weida Gao, Liying Qu, Guanyu Shang, Bo Qu, Xiangyan Ding, Haoyu Li, Weisong Zhao, Wenhao Liu","doi":"10.1364/OE.586749","DOIUrl":"https://doi.org/10.1364/OE.586749","url":null,"abstract":"Quantitative 3D imaging technology is crucial for the identification, diagnosis, and assessment of treatment for gastrointestinal lesions, particularly in early-stage screening for polyps, which can prevent carcinogenesis. High-resolution Endoscopy with Resolved spatio-Angular disparity for Layered Depth Sensing (HERALDS), a flexible, high-resolution volumetric imaging tool, has been developed by our team for gastrointestinal lesion analysis. While its functionality has been established, its design principles and calibration methods have not been systematically discussed. Here, we introduce a systematic design strategy based on optimal spatial arrangement and information maximization to enhance imaging throughput, a comprehensive calibration framework to mitigate distortions and integration errors, and an efficient point spread function acquisition method to ensure reliable reconstruction. Further, we evaluate the system's resolution and the reconstructed algorithm via numerical simulations and verify the system's quantitative imaging performance through repeated measurements of a high-precision standard. This work not only supports the implementation and replication of the HERALDS system but also provides valuable insights into the design, calibration, and performance evaluation of multi-view 3D imaging systems, advancing the application of quantitative 3D imaging for the early detection and treatment of gastrointestinal diseases.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"34 8","pages":"15664-15682"},"PeriodicalIF":3.3,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147819086","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

Validated radiative transfer modeling reveals exceptional subsurface light enhancement in coccolithophore blooms. 经过验证的辐射传输模型揭示了球石藻华中异常的地下光增强。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2026-04-20 DOI: 10.1364/OE.584528

Børge Hamre, Elinor Tessin, Daniel Koestner, Håkon Sandven, Shea Cheatham, Yi-Chun Chen, Arne S Kristoffersen

引用次数: 0

Phase-interval differential spatial coding for reliable fringe-order determination using a 3 + 1 pattern scheme. 相位间隔差分空间编码可靠的条纹顺序确定使用3 + 1模式方案。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2026-04-20 DOI: 10.1364/OE.593050

Yusheng Jin, Kunpeng Yang, Jianjun Ding, Zhenyi Wang, Qingze He, Haowei Cao, Lin Sun, Jie Wang, Genyuan Liu

{"title":"Phase-interval differential spatial coding for reliable fringe-order determination using a 3 + 1 pattern scheme.","authors":"Yusheng Jin, Kunpeng Yang, Jianjun Ding, Zhenyi Wang, Qingze He, Haowei Cao, Lin Sun, Jie Wang, Genyuan Liu","doi":"10.1364/OE.593050","DOIUrl":"https://doi.org/10.1364/OE.593050","url":null,"abstract":"Reliable fringe-order determination with a minimal number of projected patterns is essential for dynamic fringe projection profilometry (FPP), especially when measuring objects containing discontinuities and abrupt geometric variations. We present a phase-interval differential spatial-coding framework for absolute-phase retrieval using a 3 + 1 acquisition scheme. Three-step phase shifting retrieves the wrapped phase and estimates the background and modulation terms, which are further reused to demodulate the phase of a single high-frequency coded pattern. Codewords are constructed by phase-staircase quantization and decoded within two complementary wrapped-phase intervals, (-π,0] and (0,π]: the right-interval code provides the low-order component, while the left-right difference encodes the high-order component, thereby expanding the code space within one fringe period. This differential design enables reliable fringe-order recovery even when one subregion is locally missing due to occlusion or depth discontinuities. Overlap-guided connected-domain fusion and iterative constraint propagation are further introduced to correct locally isolated segments. Experiments on edge-rich targets demonstrate accurate absolute-phase reconstruction using only four projected patterns and improved reliability over representative two-frequency, phase-coding, and Gray-code baselines under identical settings.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"34 8","pages":"14632-14649"},"PeriodicalIF":3.3,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147819178","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-robustness underwater vortex beam recognition using conjugate superimposed OAM modes and a deep residual network. 基于共轭叠加OAM模式和深度残差网络的高鲁棒水下涡旋波束识别。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2026-04-20 DOI: 10.1364/OE.595671

Yuan Feng, Zhengyu Li, Kangping Hou, Chunchen Hu, Tong Li, Hanxu Zhang, Yu Lei, Xutao Mo, Junbao Hu

{"title":"High-robustness underwater vortex beam recognition using conjugate superimposed OAM modes and a deep residual network.","authors":"Yuan Feng, Zhengyu Li, Kangping Hou, Chunchen Hu, Tong Li, Hanxu Zhang, Yu Lei, Xutao Mo, Junbao Hu","doi":"10.1364/OE.595671","DOIUrl":"https://doi.org/10.1364/OE.595671","url":null,"abstract":"Underwater optical vortex communication faces critical challenges from scattering, turbulence, and transient occlusions, which severely distort orbital angular momentum (OAM) modes. We propose and experimentally demonstrate a robust mode recognition scheme that combines conjugate superimposed OAM beams with a deep residual network (ResNet-50). Nine distinct underwater disturbance environments are quantitatively emulated by independently tuning kaolin concentration, water pump power, and introducing random rectangular occlusions. The petal-like intensity patterns of conjugate superimposed beams preserve discriminative structural information even under strong combined perturbations. Using power-law transformed images as input, ResNet-50 achieves ∼100% classification accuracy for 16 OAM modes across all tested disturbance levels and maintains reliable recognition when occlusions cover up to half of the beam cross-section. The inherent spatial redundancy of conjugate superposition, together with the residual network's feature preservation capability, enables near-perfect generalization without overfitting to experimental artifacts. This work provides a practical, intelligent demodulation framework for deploying highly robust underwater OAM communication systems in real-sea scenarios.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"34 8","pages":"14650-14661"},"PeriodicalIF":3.3,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147818332","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

Strategy for achieving spectral flatness of low crystal symmetry nanoparticles doped polymer based optical waveguide amplifier by constructing a heterogeneous core-shell structure. 构建非均相核壳结构实现低晶对称纳米掺杂聚合物光波导放大器的光谱平坦度策略。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2026-04-20 DOI: 10.1364/OE.590853

Jing Yin, Zhixu Jia, Changlong Li, Guanlin Li, Shuang Wu, Hao Cui, Fei Wang, Dan Zhao, Weiping Qin

{"title":"Strategy for achieving spectral flatness of low crystal symmetry nanoparticles doped polymer based optical waveguide amplifier by constructing a heterogeneous core-shell structure.","authors":"Jing Yin, Zhixu Jia, Changlong Li, Guanlin Li, Shuang Wu, Hao Cui, Fei Wang, Dan Zhao, Weiping Qin","doi":"10.1364/OE.590853","DOIUrl":"https://doi.org/10.1364/OE.590853","url":null,"abstract":"Due to the low crystal symmetry of LiYF4:Yb,Er nanocrystals (NCs), polymer-based optical waveguide amplifiers (OWAs) doped with these NCs can amplify signals across most of the S-band and the entire C+L band. This broadband amplification arises from the splitting of Er3+ energy levels (4I13/2 and 4I15/2) induced by the crystal field in low-symmetry LiYF4. However, the strong splitting also leads to poor spectral flatness, causing gain dip in the C+L band. To achieve broadband amplification with flat gain, we propose a heterogeneous core-shell structure, coating a low-symmetry tetragonal LiYF4 core with a high-symmetry hexagonal NaYF4 shell. Er3+ ions in the core broaden the operating band through level splitting, while those in the shell contribute narrowband, flat emission around 1.5 µm due to reduced splitting. An OWA was fabricated using SU-8 doped with LiYF4:Yb,Er@NaYF4:Yb,Er nanoparticles as the gain medium. Under 980 nm excitation at 300 mW, the device provided a relative gain of 3.68-8.58 dB over 1500-1625 nm, covering part of the S-band and the full C+L band. This approach enhances the applicability of low-symmetry NCs in OWAs and offers a strategy for fabricating broadband polymer OWAs with flat gain.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"34 8","pages":"14434-14444"},"PeriodicalIF":3.3,"publicationDate":"2026-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147818814","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

Intensity correlation technique for mode detection and information encoding with structured-light superpositions. 结构光叠加模式检测与信息编码的强度相关技术。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2026-04-20 DOI: 10.1364/OE.591525

Nazifa Rumman, Manon P Bart, Ryan T Glasser, Thomas A Searles

引用次数: 0

Computer-generated holography using hybrid planar-spherical wave primitives. 使用混合平面-球面波基元的计算机生成全息。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2026-04-20 DOI: 10.1364/OE.582706

Jani Mäkinen, Ugur Gudelek, Lauri Varjo, Erdem Sahin, Atanas Gotchev

引用次数: 0