Applied optics最新文献

Phase-edge imaging using q-plate shifts for faster and simpler microscopy. 相位边缘成像使用q板移位更快，更简单的显微镜。

Applied optics Pub Date : 2026-10-10 Epub Date: 2026-09-17 DOI: 10.1364/AO.608559

Jigme Zangpo, Hirokazu Kobayashi, Ryo Yasuhara

引用次数: 0

Physics-guided unsupervised network demodulation technique for a snapshot spatially modulated full-linear polarization imaging. 快照空间调制全线偏振成像的物理引导无监督网络解调技术。

Applied optics Pub Date : 2026-10-10 Epub Date: 2026-09-17 DOI: 10.1364/AO.610993

Zhancheng Song, Chenling Jia, Yilin Zhang, An Pan, Jianxuan Feng, Jing Zhang, Qizhi Cao, Huahua Wang, Dongxin Fan, Deng Ting

{"title":"Physics-guided unsupervised network demodulation technique for a snapshot spatially modulated full-linear polarization imaging.","authors":"Zhancheng Song, Chenling Jia, Yilin Zhang, An Pan, Jianxuan Feng, Jing Zhang, Qizhi Cao, Huahua Wang, Dongxin Fan, Deng Ting","doi":"10.1364/AO.610993","DOIUrl":"https://doi.org/10.1364/AO.610993","url":null,"abstract":"Spatially modulated snapshot imaging polarimeters (SMSIPs) exhibit substantial potential for dynamic-scene detection; however, accurately demodulating Stokes parameters from a single interferogram is an inherently underdetermined and ill-posed inverse problem. Traditional demodulation algorithms suffer from resolution loss and inter-channel crosstalk, whereas purely data-driven deep learning methods require costly labeled datasets and are susceptible to nonphysical phase-amplitude crosstalk. To address these challenges, a spatially modulated full-linear polarization imaging system incorporating modified Savart polariscopes is constructed to efficiently encode the first three Stokes parameters of the target. Furthermore, a physics-guided unsupervised cascaded neural network (PGUCN) framework is proposed for high-accuracy demodulation. The method embeds the forward interferometric physical mechanism as a prior constraint into the network, progressively narrows the feasible solution space through three-stage cascaded optimization, and suppresses nonphysical phase-amplitude crosstalk without paired ground-truth data. Simulations and optical experiments show that, compared with representative existing methods, PGUCN reduces the reliance on complex hardware parameter calibration and improves native spatial-resolution preservation, noise robustness, and orthogonal decoupling accuracy. This study provides a physics-guided paradigm for calibration-free, accurate snapshot polarimetric detection in complex environments.","PeriodicalId":101299,"journal":{"name":"Applied optics","volume":"65 29","pages":"10185-10196"},"PeriodicalIF":0.0,"publicationDate":"2026-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149229583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Parallelism measurement of spatially separated optical axes using a quadriwave lateral shearing interferometer. 用四波横向剪切干涉仪测量空间分离光轴的平行度。

Applied optics Pub Date : 2026-10-10 Epub Date: 2026-09-18 DOI: 10.1364/AO.611382

Bing-Jie Wang, Xing-He Li, Xue-Yuan Li, Qing-Lan Wang, Qi Liu

引用次数: 0

Design and validation of a high-efficiency RF amplifier for acousto-optic spectrometers. 声光光谱仪用高效射频放大器的设计与验证。

Applied optics Pub Date : 2026-10-10 Epub Date: 2026-09-22 DOI: 10.1364/AO.610160

Pallab Kr Gogoi, Mehmet Şevket Uludağ, Jurgen Vanhamel, Jérôme Loicq

引用次数: 0

Dual-beamline electro-optic continuous focal zooming for KrF laser drivers. KrF激光驱动器的双光束线电光连续变焦。

Applied optics Pub Date : 2026-10-10 Epub Date: 2026-08-25 DOI: 10.1364/AO.609961

Qijun Chen, WenYa Chen, Bin Zhang, Zheqiang Zhong

引用次数: 0

Frequency-domain-guided deep Wiener deconvolution for optical sparse aperture image restoration. 频域引导下的光学稀疏孔径图像深度维纳反卷积恢复。

Applied optics Pub Date : 2026-10-10 Epub Date: 2026-09-16 DOI: 10.1364/AO.605333

Ruoqi Wang, Wenrui Wang, Hong Chen, Cheng Lv, Xueqian Bai, Siyu Zhu, Mengyao Chen, Kexin Chen, Lingyun Ye, Kaichen Song

{"title":"Frequency-domain-guided deep Wiener deconvolution for optical sparse aperture image restoration.","authors":"Ruoqi Wang, Wenrui Wang, Hong Chen, Cheng Lv, Xueqian Bai, Siyu Zhu, Mengyao Chen, Kexin Chen, Lingyun Ye, Kaichen Song","doi":"10.1364/AO.605333","DOIUrl":"https://doi.org/10.1364/AO.605333","url":null,"abstract":"Optical sparse aperture (OSA) imaging systems synthesize a large effective aperture with reduced volume and weight, but their sparse pupil configurations attenuate the mid-frequency modulation transfer function and degrade image quality. Existing learning-based restoration methods mainly optimize spatial-domain reconstruction and provide limited explicit supervision for the frequency-dependent degradation characteristics of OSA systems. To address this issue, we propose a frequency-domain-guided deep Wiener deconvolution network (FDWDN), which incorporates the point spread function as an explicit physical prior and introduces complex-spectrum supervision into the reconstruction objective. This formulation enables the restoration process to be directly constrained in the frequency domain and naturally supports frequency-selective weighting. At an SNR of 40 dB, FDWDN improves PSNR from 25.16 to 33.43 dB, SSIM from 0.6381 to 0.8767, and mean mid-band Fourier ring correlation from 0.5376 to 0.7375. FDWDN also achieves better overall restoration performance than conventional methods and representative deep restoration networks. These results demonstrate that FDWDN provides accurate spatial reconstruction and improved mid-frequency spectral consistency for OSA image restoration.","PeriodicalId":101299,"journal":{"name":"Applied optics","volume":"65 29","pages":"10168-10177"},"PeriodicalIF":0.0,"publicationDate":"2026-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149229724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-precision measurement method of liquid concentration based on differential laser self-mixing interferometry. 基于差分激光自混合干涉法的液体浓度高精度测量方法。

Applied optics Pub Date : 2026-10-10 Epub Date: 2026-09-16 DOI: 10.1364/AO.608568

Yan Zhao, Xinnan Liu, Yanlong Liu, Daming Dong, Hui Zhao, Chunling Tu

{"title":"High-precision measurement method of liquid concentration based on differential laser self-mixing interferometry.","authors":"Yan Zhao, Xinnan Liu, Yanlong Liu, Daming Dong, Hui Zhao, Chunling Tu","doi":"10.1364/AO.608568","DOIUrl":"https://doi.org/10.1364/AO.608568","url":null,"abstract":"This paper proposes a method for measuring liquid concentration based on differential laser self-mixing interference. It measures changes in the liquid's refractive index and uses the refractive index-concentration calibration relationship to determine the concentration. By using a differential detection setup, two self-mixing interference signals with a 180° phase difference are obtained. A translation stage moves a triangular cuvette, introducing a controllable optical path difference, converting changes in the liquid's refractive index into interference fringe changes. Combining SVMD adaptive decomposition, correlation coefficient mode selection, peak extraction, and square wave edge detection algorithms, the interference fringes can be stably extracted and accurately counted, establishing a quantitative relationship between refractive index and concentration. We tested with NaCl solution and glucose solution, and under the experimental conditions, the maximum relative errors in measuring the concentrations of NaCl solution and glucose solution were 2.57% and 4.17%, respectively, which proved that this method can measure concentrations under these specific experimental conditions. This approach is compact, low-cost, robust against interference, and highly accurate, offering what is believed to be a new technical solution for online liquid concentration detection.","PeriodicalId":101299,"journal":{"name":"Applied optics","volume":"65 29","pages":"10057-10064"},"PeriodicalIF":0.0,"publicationDate":"2026-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149229420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Physics-enhanced deep learning for dual-branch single-pixel vision via highly scattering media. 基于高散射介质的双分支单像素视觉物理增强深度学习。

Applied optics Pub Date : 2026-10-10 Epub Date: 2026-09-22 DOI: 10.1364/AO.609208

Ziming Ye, Zhiyue Yin, Lihang Liu, H Y Fu

{"title":"Physics-enhanced deep learning for dual-branch single-pixel vision via highly scattering media.","authors":"Ziming Ye, Zhiyue Yin, Lihang Liu, H Y Fu","doi":"10.1364/AO.609208","DOIUrl":"https://doi.org/10.1364/AO.609208","url":null,"abstract":"Single-pixel imaging (SPI) offers sensitivity for optical sensing, but dynamic scattering media severely degrade the captured 1D bucket signals, causing traditional image reconstruction algorithms to fail and hindering target recognition. To overcome the resulting sim-to-real gap, we propose a physics-enhanced dual-branch digital twin framework for single-pixel vision in highly scattering environments. By algorithmically embedding physical channel degradations-including optical blooming, spatial misalignment, and dynamic turbulence scintillation-into the synthetic training pipeline, the network learns to extract robust, noise-invariant features directly from heavily corrupted measurements. The architecture utilizes a shared encoder that simultaneously drives a semantic classification branch for rapid target recognition and a parallel spatial reconstruction branch for visual validation. Experimental validations in a dynamically turbid underwater testbed demonstrate that the proposed dual-branch model significantly outperforms conventional mathematical methods, e.g., differential ghost imaging and total variation, in structural fidelity and noise suppression. Furthermore, the framework exhibits exceptional compressive sensing efficiency, achieving a peak classification accuracy of 81.2% at a highly compressed sampling ratio of just 19.53%. The system maintains robust semantic recognition even under extreme physical turbulence, where conventionally reconstructed targets are rendered completely unrecognizable. This physics-enhanced deep learning approach provides a highly efficient solution for real-time optical sensing and target identification in dynamically challenging macroscopic channels.","PeriodicalId":101299,"journal":{"name":"Applied optics","volume":"65 29","pages":"10285-10295"},"PeriodicalIF":0.0,"publicationDate":"2026-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149229595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Beam control method of a liquid crystal spatial light modulator based on fractional-order active disturbance rejection control. 基于分数阶自抗扰控制的液晶空间光调制器光束控制方法。

Applied optics Pub Date : 2026-10-10 Epub Date: 2026-09-21 DOI: 10.1364/AO.612093

Chunyang Wang, Wenliang Feng, Xuelian Liu, Jinyang Yu, Xiaoning Yu, Da Xie

引用次数: 0

Tunable topological interface states in a one-dimensional photonic crystal heterostructure with metallic nanoparticle inclusions. 含金属纳米颗粒的一维光子晶体异质结构的可调谐拓扑界面态。

Applied optics Pub Date : 2026-10-10 Epub Date: 2026-09-15 DOI: 10.1364/AO.609083

Murtadha Jawad, Samad Roshan Entezar

{"title":"Tunable topological interface states in a one-dimensional photonic crystal heterostructure with metallic nanoparticle inclusions.","authors":"Murtadha Jawad, Samad Roshan Entezar","doi":"10.1364/AO.609083","DOIUrl":"https://doi.org/10.1364/AO.609083","url":null,"abstract":"We investigate the optical properties of a one-dimensional topological photonic crystal heterostructure in which one constituent layer is doped with silver nanoparticles. The structure comprises two photonic crystals with identical photonic band gaps but distinct topological characteristics, enabling the formation of localized interface states. Using the transfer matrix method and effective-medium theory, we analyze the effects of metallic (silver-nanoparticle) inclusions, on the photonic band structure, reflection phase, transmission spectrum, and absorption. The results show that topologically protected interface states emerge within photonic band gaps exhibiting a topological mismatch and persist despite metallic losses. Metallic inclusions provide a tunable mechanism for controlling the resonant wavelength, linewidth, and transmission of these states. Increasing the filling fraction induces a redshift and resonance broadening due to an enhanced effective refractive index and increased absorption, while variations in nanoparticle size primarily affect damping and transmission efficiency. Despite these changes, the spatial localization profile of the interface state remains robust, confirming its topological nature. The angular response exhibits strong polarization dependence, with TM states showing greater resilience to loss under oblique incidence. These findings demonstrate the interplay between effective-medium response of metallic inclusions and topological protection and provide practical guidance for designing tunable, robust photonic devices based on hybrid metallic-nanoparticle-topological structures.","PeriodicalId":101299,"journal":{"name":"Applied optics","volume":"65 29","pages":"10006-10015"},"PeriodicalIF":0.0,"publicationDate":"2026-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149229730","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0