Optics express最新文献_第8页

Multistate and dispersion-controlled symmetric/asymmetric photonic spin-orbit interactions via Ge₂Sb₂Te₅ phase-change metasurfaces for double convolution vector holography. 双卷积矢量全息中Ge2Sb2Te5相变超表面的多态和色散控制的对称/非对称光子自旋轨道相互作用。

IF 3.4 2区物理与天体物理

Optics express Pub Date : 2026-10-05 DOI: 10.1364/OE.613649

Jixiang Cai, Xingyu Tong, Xuanhao Cui, Chengyu Hu, Gensen Yang, Fuzhong Bai, Shiming Gan, Xiuzhuang Mei

{"title":"Multistate and dispersion-controlled symmetric/asymmetric photonic spin-orbit interactions via Ge2Sb2Te5 phase-change metasurfaces for double convolution vector holography.","authors":"Jixiang Cai, Xingyu Tong, Xuanhao Cui, Chengyu Hu, Gensen Yang, Fuzhong Bai, Shiming Gan, Xiuzhuang Mei","doi":"10.1364/OE.613649","DOIUrl":"https://doi.org/10.1364/OE.613649","url":null,"abstract":"Metasurfaces enable flexible manipulation of the polarization, phase, and amplitude of light by engineering subwavelength structures, providing a pivotal platform for exploring photonic spin-orbit interactions (PSOIs). Nevertheless, it commonly suffers from limited design degrees of freedom, i.e., supporting either symmetric PSOIs (SPSOIs) or asymmetric PSOIs (APSOIs) independently for one metasurface. Herein, we propose a reconfigurable phase-change metasurface with Ge2Sb2Te5 (GST) that achieves multistate and dispersion-switchable SPSOI/APSOI dual-mode manipulation. By tuning the 3 crystallization fractions of GST (i.e., amorphous, semicrystalline, and crystalline), such a metasurface can co-generate or switch between SPSOIs and APSOIs at 4 wavelengths. As conceptual demonstrations, a dual-channel orbital angular momentum (OAM) vortex beam generator and a dynamic hologram metadevice are designed and characterized, which verifies that the superposition of OAM states can be modulated via wavevector engineering by adjusting GST crystallization states, operating wavelength, and incident circular polarization. This proposed phase-change metasurface architecture provides a versatile route toward reconfigurable dynamic holographic displays, high-dimensional high-capacity optical information storage, and integrated multifunctional photonic devices.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"34 20","pages":"38271-38283"},"PeriodicalIF":3.4,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149112786","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 resonant optical gyroscope using dual acousto-optic frequency modulation and closed-loop interrogation. 采用双声光调频和闭环讯问的宽带谐振光学陀螺仪。

IF 3.4 2区物理与天体物理

Optics express Pub Date : 2026-10-05 DOI: 10.1364/OE.610900

Fan Wu, Jun Li, Yang Du

{"title":"Broadband resonant optical gyroscope using dual acousto-optic frequency modulation and closed-loop interrogation.","authors":"Fan Wu, Jun Li, Yang Du","doi":"10.1364/OE.610900","DOIUrl":"https://doi.org/10.1364/OE.610900","url":null,"abstract":"Broadband-source-driven resonant fiber-optic gyroscopes provide a promising route to suppress coherence-related parasitic effects while retaining a resonator-based differential-frequency discriminator. However, existing interrogation schemes still rely heavily on phase-modulator-based frequency shifting, which can introduce reset transients, half-wave-voltage drift, residual intensity modulation and harmonic distortion. Here, we demonstrate a broadband resonant optical gyroscope based on dual acousto-optic frequency modulation and closed-loop resonance interrogation. A broadband ASE source interrogates a fiber ring resonator, while two acousto-optic modulators independently control the counter-propagating optical frequencies. One AOM applies dual-frequency frequency-shift modulation to sample the resonator response on both sides of the resonance, converting the symmetric resonance envelope into an antisymmetric error signal. The second AOM applies an RF-defined feedback frequency that compensates the Sagnac-induced frequency detuning, allowing the angular rate to be recovered directly from the closed-loop feedback signal. With a 500 m fiber ring resonator, a 70 mm mean diameter and a 30 nm-bandwidth ASE source centered near 1550 nm, the system shows stable closed-loop operation under zero-rate conditions. A 5 h continuous data segment selected from a continuous acquisition gives an angle-random-walk estimate of 0.00163∘/h from the one-second Allan-deviation level and a minimum Allan deviation of 0.00172∘/h. The results establish dual-AOM frequency control as a flexible interrogation strategy for broadband resonant optical gyroscopes and provide a practical route to reducing phase-modulator-induced errors in low-coherence resonant inertial sensing.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"34 20","pages":"37803-37816"},"PeriodicalIF":3.4,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149112839","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

Super-resolution microscopy via fluctuation-enhanced spatial mode demultiplexing. 通过波动增强空间模式解复用的超分辨率显微镜。

IF 3.4 2区物理与天体物理

Optics express Pub Date : 2026-10-05 DOI: 10.1364/OE.605623

Stanisław Kurdziałek

引用次数: 0

Dyad of equivalence theorems of partially coherent beams on scattering from different types of media. 不同介质散射下部分相干光束的等效定理。

IF 3.4 2区物理与天体物理

Optics express Pub Date : 2026-10-05 DOI: 10.1364/OE.611478

Yi Ding

{"title":"Dyad of equivalence theorems of partially coherent beams on scattering from different types of media.","authors":"Yi Ding","doi":"10.1364/OE.611478","DOIUrl":"https://doi.org/10.1364/OE.611478","url":null,"abstract":"Although the equivalence theorem (ET) concerning partially coherent beams on scattering has recently emerged as an advancement in potential scattering theory, the current analysis remains confined to scatterers belonging to the same category, i.e., continuous scatterers. Here, we generalize the ET to a more general and practical situation where partially coherent beams are scattered by different types of media, i.e., the continuous medium and the discrete particulate medium. We find that the normalized far-zone spectral densities produced by Gaussian Schell-model (GSM) beams on scattering from different types of media can be identical if the structural characteristics of both the incident beam and the scattering medium obey certain constraints. Based on this, we identify two ETs for the normalized far-zone spectral density: medium-driven equivalence and source-medium joint equivalence, which are referred to here collectively as a dyad. As an example, we analyze the scattering of GSM beams by a Gaussian-correlated quasihomogeneous continuous medium and by a system of deterministic Gaussian soft-edge particles distributed with a GSM position correlation profile, and derive the explicit analytical constraints for the structural parameters of both the incident beam and the scattering medium to achieve identical normalized spectral densities. These findings reveal structural ambiguities in inverse scattering, offering insights for improving reconstruction accuracy in optical remote sensing, laser plasma diagnostics, and biomedical imaging.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"34 20","pages":"37201-37213"},"PeriodicalIF":3.4,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149113247","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

Enhancing the imaging performance of single-photon array detection through freeform-surface-based light field modulation. 自由曲面光场调制提高单光子阵列探测成像性能。

IF 3.4 2区物理与天体物理

Optics express Pub Date : 2026-10-05 DOI: 10.1364/OE.606003

Weihao Shen, Zhiyuan Zhao, Haotong Ma, Shengyu Liu, Wuqiang Xu, Yingben Song, Yanda Gu, Hu Yang

{"title":"Enhancing the imaging performance of single-photon array detection through freeform-surface-based light field modulation.","authors":"Weihao Shen, Zhiyuan Zhao, Haotong Ma, Shengyu Liu, Wuqiang Xu, Yingben Song, Yanda Gu, Hu Yang","doi":"10.1364/OE.606003","DOIUrl":"https://doi.org/10.1364/OE.606003","url":null,"abstract":"To address the bottlenecks of low optical efficiency and uneven illumination inherent to single-photon array LiDAR systems, this paper proposes a joint imaging framework combining freeform light field shaping via an orthogonal bidirectional iterative algorithm and total-variation (TV) regularized image reconstruction. The core optical contribution lies in a freeform lens design strategy based on orthogonal bidirectional iteration, which establishes a precise energy mapping between incident Gaussian beams and uniform lattice light fields matching GM-APD pixel layouts. This refractive reshaping converts raw Gaussian radiation into flat-top spot arrays with homogenized energy distribution. Numerical simulations verify that the proposed freeform modulation achieves an optical energy utilization of 89.1% and a light uniformity of 96.5%, fundamentally resolving the tradeoff between central pixel saturation and peripheral detection blind zones in array receivers. For photon-sparse, noise-contaminated raw echo data, a reconstruction workflow integrating maximum likelihood estimation (MLE) and conventional TV regularization is adopted to suppress stochastic noise while preserving sharp object geometric edges. Nighttime field experiments targeting a scene at 22.4 m demonstrate that the mean absolute error (MAE) of depth reconstruction is reduced from 2.2373 m under unoptimized flood illumination to 0.3176 m with our freeform lattice illumination. The presented scheme fulfills the large field-of-view (FOV) requirement of array-based single-photon detection and yields remarkable imaging improvements under constraints of limited laser output power and compact optical packaging. This work delivers a feasible optical route for high-efficiency, long-range single-photon 3D imaging LiDAR.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"34 20","pages":"37320-37339"},"PeriodicalIF":3.4,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149113250","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

Defect management via compositional design for superior photobleaching efficiency in Yb-doped fibers after low-dose gamma radiation. 低剂量伽玛辐射后掺镱光纤优越光漂白效率的成分设计缺陷管理。

IF 3.4 2区物理与天体物理

Optics express Pub Date : 2026-10-05 DOI: 10.1364/OE.613872

Jiangbin Zhang, Guangbiao Xiang, Zhenxin Zhu, Jinpeng Li, Chunxiao Zhao, Zhiping Yan, Zhiyong Pan, Xiaolin Wang, Weihong Hua, Jinbao Chen

{"title":"Defect management via compositional design for superior photobleaching efficiency in Yb-doped fibers after low-dose gamma radiation.","authors":"Jiangbin Zhang, Guangbiao Xiang, Zhenxin Zhu, Jinpeng Li, Chunxiao Zhao, Zhiping Yan, Zhiyong Pan, Xiaolin Wang, Weihong Hua, Jinbao Chen","doi":"10.1364/OE.613872","DOIUrl":"https://doi.org/10.1364/OE.613872","url":null,"abstract":"Rare-earth-doped fiber lasers are widely used in radiation environments such as space and nuclear facilities, where ionizing radiation induces defects in the gain fiber and causes performance degradation. In this study, we investigate the role of the P/Al ratio on the photobleaching performance of Yb-doped fibers. An online photobleaching platform was constructed to assess the bleaching efficiency at two wavelengths (450 nm and 638 nm) by measuring the radiation-induced absorption spectra of fibers with different P/Al ratios. Gaussian fitting of the spectra reveals that Al-rich fibers are dominated by Al-OHC and Yb2+ defects, while fibers with higher P/Al ratios exhibit P-related defects such as l-POHC and r-POHC. Regardless of the P/Al ratio, 450 nm bleaching light consistently provides higher bleaching efficiency than 638 nm, and the sample with a P/Al ratio near 1 showed the greatest photobleaching efficacy. These findings clarify how fiber composition and photobleaching wavelength jointly govern radiation recovery and provide guidance for designing radiation-resistant fiber lasers.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"34 20","pages":"38072-38082"},"PeriodicalIF":3.4,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149113263","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

Spectral-augmented learning for viable bio-speckle reconstruction. 可行生物斑点重建的光谱增强学习。

IF 3.4 2区物理与天体物理

Optics express Pub Date : 2026-10-05 DOI: 10.1364/OE.612049

Linhao Li, Xia Wang, Yifan Deng, Peiyang Xing

{"title":"Spectral-augmented learning for viable bio-speckle reconstruction.","authors":"Linhao Li, Xia Wang, Yifan Deng, Peiyang Xing","doi":"10.1364/OE.612049","DOIUrl":"https://doi.org/10.1364/OE.612049","url":null,"abstract":"Speckle correlation imaging (SCI) shows extensive application potential in imaging through biological media, and deep learning methods have achieved high performance in imaging scenarios through homogeneous media. However, the insufficient volume of real biological speckle data, coupled with the non-ideal intensity noise inherent in these speckles, has impeded the practical implementation and further advancement of SCI technology. To address these challenges, a dataset of speckles from viable biological media was constructed and made publicly available. The properties of biological speckles were characterized, and their autocorrelation constraints as well as the characteristics of the Fourier magnitude spectrum were modeled and validated. Leveraging a dual-path architecture with a dedicated frequency-domain input branch, the spatial-frequency hybrid reconstruction neural network (SFHRnet) was proposed. Benefiting from its rational architecture, it exhibits superior performance compared to previous approaches in reconstruction accuracy, notably in recovering complex vessel targets. This method is expected to advance the practical biological applications of speckle imaging and provide valuable references for scattering imaging scenarios.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"34 20","pages":"37554-37575"},"PeriodicalIF":3.4,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149113265","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

Integrated diffuse reflection spectroscopy and iterative multi-plane optical properties extraction framework for optical property extraction across scattering regimes. 跨散射区光学特性提取的集成漫反射光谱和迭代多平面光学特性提取框架。

IF 3.4 2区物理与天体物理

Optics express Pub Date : 2026-10-05 DOI: 10.1364/OE.608266

Yuval Haibi, Channa Shapira, Chaim Guter, Hamootal Duadi, Dror Fixler

{"title":"Integrated diffuse reflection spectroscopy and iterative multi-plane optical properties extraction framework for optical property extraction across scattering regimes.","authors":"Yuval Haibi, Channa Shapira, Chaim Guter, Hamootal Duadi, Dror Fixler","doi":"10.1364/OE.608266","DOIUrl":"https://doi.org/10.1364/OE.608266","url":null,"abstract":"Accurate optical-property extraction in turbid media requires reliable sensing across both near- and far-field scattering regimes, where classical diffuse reflection spectroscopy (DRS) is not equally valid. We present an integrated DRS and iterative multi-plane optical properties extraction (IMOPE) framework for characterizing turbid media across scattering regimes. Seven-plane phase retrieval enabled IMOPE analysis, while camera-based DRS provided an objective method for phase-image segmentation. Experiments were performed using tissue-like phantoms with reduced scattering coefficients of 0.35 - 0.75 mm-1 at 632.8 nm. In the transformed DRS profiles, the geometric correction factor m determined the linearization regime. For m = 0.5, squared-slope coefficients obtained from the standard DRS and the integrated system were 0.20 ± 0.009 and 0.19 ± 0.004, respectively, demonstrating good agreement between systems. In contrast, the m = 1 coefficient was 0.09 ± 0.003, confirming the predicted twofold difference between regimes. These results support an effective-pathlength extension beyond classical diffusion theory and establish a unified framework for quantitative optical-property extraction across scattering regimes.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"34 20","pages":"37710-37727"},"PeriodicalIF":3.4,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149113316","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

Near-infrared metasurface full-stokes polarization detector with double-layer gratings. 双层光栅近红外超表面全斯托克斯偏振探测器。

IF 3.4 2区物理与天体物理

Optics express Pub Date : 2026-10-05 DOI: 10.1364/OE.595675

Mengxue Yang, Yuxin Zhu, Yi Yang, Jing Wang, Meizhang Wu, Hang Dong, Yanlin He

引用次数: 0

Photobleaching of silicon-related bismuth active centers originating from pseudo-Jahn-Teller effect-driven structural distortion. 伪jann - teller效应驱动的结构畸变引起的硅相关铋活性中心的光漂白。

IF 3.4 2区物理与天体物理

Optics express Pub Date : 2026-10-05 DOI: 10.1364/OE.609730

Qi Yang, Yuqin Zhang, Bowen Zhang, Yushi Chu, Gang-Ding Peng, Jianzhong Zhang

引用次数: 0