Optics express最新文献_第8页

Static subaperture stitching interferometry based on dynamic wavefront modulation with a spatial light modulator. 基于空间光调制器动态波前调制的静态子孔径拼接干涉测量。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2025-07-28 DOI: 10.1364/OE.569271

Wenxin Jia, Kaiyong Zhang, Lumei Tan, Kerong Jiao, Bin Liu, Hua Shen, Xiaokun Wang

{"title":"Static subaperture stitching interferometry based on dynamic wavefront modulation with a spatial light modulator.","authors":"Wenxin Jia, Kaiyong Zhang, Lumei Tan, Kerong Jiao, Bin Liu, Hua Shen, Xiaokun Wang","doi":"10.1364/OE.569271","DOIUrl":"https://doi.org/10.1364/OE.569271","url":null,"abstract":"Subaperture stitching interferometry (SSI) is an essential technique for testing surface shape errors of complex surfaces. However, the accuracy of full-aperture surface reconstruction is affected by positioning errors caused by mechanical movement. To address this issue, this paper presents a static SSI method based on dynamic wavefront modulation using a spatial light modulator (SLM). The SLM is utilized to compensate for the amount of tilt required for subaperture testing and combined with a standard spherical lens to generate tilted spherical waves. This process is performed via a feedback correction algorithm based on Newton iterations, with the aim of to increasing the quality of the tilted standard spherical wavefront. Full-aperture stitching tests can be realized without moving any system components, fundamentally suppressing the generation of positioning errors. For a high-order aspheric surface, the root mean square (RMS) value of the point-to-point residual wavefront between the test and the result of the computer-generated hologram (CGH) method is 0.01λ. Thus, the proposed method can be applied for the high-precision testing of complex surfaces.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"33 15","pages":"31319-31333"},"PeriodicalIF":3.3,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144743798","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

Switchable high-Q and high-sensitivity nanoscale MIM waveguide-based biaxial optical accelerometer. 可切换的高q高灵敏度纳米尺度MIM波导双轴光学加速度计。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2025-07-28 DOI: 10.1364/OE.568251

Shaoze Zhang, Yanhu Shan, Heng Li, Wenjing Wang, Xiaoyi Wang, Shuailong Zhang, Huikai Xie, Huiliang Cao

{"title":"Switchable high-Q and high-sensitivity nanoscale MIM waveguide-based biaxial optical accelerometer.","authors":"Shaoze Zhang, Yanhu Shan, Heng Li, Wenjing Wang, Xiaoyi Wang, Shuailong Zhang, Huikai Xie, Huiliang Cao","doi":"10.1364/OE.568251","DOIUrl":"https://doi.org/10.1364/OE.568251","url":null,"abstract":"Nanoscale biaxial accelerometers based on metal-insulator-metal (MIM) waveguides offer high sensitivity and strong immunity to electromagnetic interference, making them attractive for next-generation inertial sensing. However, achieving multi-axis detection, device miniaturization, and high performance simultaneously remains challenging. In this work, we propose, to the best of our knowledge, a novel dual-axis optical accelerometer that integrates a circular-shaped ring resonant cavity (CSRRC) and a square-shaped ring resonant cavity (SSRRC) within a compact MIM structure. The design enables switchable sensing along orthogonal directions, achieving a high Q-factor of 68.81 along the x-axis and a sensitivity of 0.102 nm/g along the y-axis. Finite element simulations reveal the nonlinear influence of key structural parameters on device performance. The CSRRC enhances field confinement for x-axis sensing, while the SSRRC utilizes coupling with a movable proof mass to boost y-axis sensitivity. A composite configuration with orthogonally embedded resonators supports independent detection over a range of -20g to 20g, with improved sensitivity and transmission performance. This work provides a theoretical foundation for highly integrated, high-performance optical accelerometers with potential applications in industrial monitoring, UAV navigation, and biomedical devices.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"33 15","pages":"32443-32463"},"PeriodicalIF":3.3,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144743799","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

Remote sensing of particulate organic carbon in the South China Sea using airborne high-spectral-resolution LiDAR. 基于机载高光谱分辨率激光雷达的南海颗粒有机碳遥感研究。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2025-07-28 DOI: 10.1364/OE.558624

Dapeng Yuan, Yan He, Delu Pan

{"title":"Remote sensing of particulate organic carbon in the South China Sea using airborne high-spectral-resolution LiDAR.","authors":"Dapeng Yuan, Yan He, Delu Pan","doi":"10.1364/OE.558624","DOIUrl":"https://doi.org/10.1364/OE.558624","url":null,"abstract":"The vertical profiles of particulate organic carbon (POC) in the South China Sea (SCS) observed during an airborne high-spectral-resolution light detection and ranging (LiDAR) (HSRL) flight experiment conducted on May 24, 2024, were examined. We developed a robust inversion model to estimate the vertical profile distribution of the POC along the airborne HSRL flight track by integrating the airborne HSRL-measured particulate backscattering coefficient, chlorophyll-a concentration (Chla), and in-situ measurements. The vertical profile distribution of the POC for a total flight track of 24 km fluctuated in the range of 0.86 to 93.89 mg m-3. The results revealed significant vertical and horizontal heterogeneity in the POC profiles, with elevated concentrations observed in the surface and subsurface layers where phytoplankton biomass dominated. The airborne HSRL-measured POC was subjected to correlation analysis with satellite observations and in-situ measurements, yielding a determination coefficient (R2) of 0.8436 and a root mean square error (RMSE) of 5.0862 mg m-3. The vertical distribution of the ratio of Chla to POC (Chla/POC) provided key insights into the balance between living phytoplankton biomass and nonliving organic detritus. Stratification and physical processes, such as upwelling, mixing, and turbulence, have been shown to influence POC dynamics, particularly in regions of localized productivity. This research underscores the importance of HSRL technology as a tool for high-resolution oceanic carbon monitoring, contributing to improved biogeochemical models for assessing carbon sequestration efficiency.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"33 15","pages":"32560-32576"},"PeriodicalIF":3.3,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144743770","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

Research on energy transfer characteristics for liquid crystal polarization gratings under conical incidence. 锥形入射下液晶偏振光栅能量传递特性研究。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2025-07-28 DOI: 10.1364/OE.568750

Zhengtao Zha, Zhengyang Gou, Zenghui Peng, Yonggang Liu, Chengliang Yang, Xinghai Lu, Qidong Wang, Quanquan Mu

{"title":"Research on energy transfer characteristics for liquid crystal polarization gratings under conical incidence.","authors":"Zhengtao Zha, Zhengyang Gou, Zenghui Peng, Yonggang Liu, Chengliang Yang, Xinghai Lu, Qidong Wang, Quanquan Mu","doi":"10.1364/OE.568750","DOIUrl":"https://doi.org/10.1364/OE.568750","url":null,"abstract":"This study reports the energy transfer characteristics between diffraction orders of the liquid crystal polarization grating (LCPG) under conical incidence, aiming to provide a valuable reference for developing a high-performance cascaded LCPG system. Firstly, the expression of the diffraction efficiency under conical incidence is derived, and thus, the distribution characteristics of the diffraction efficiency can be investigated by numerical calculation. Meanwhile, the resonance deviation is also introduced based on the Bragg condition to elucidate the transfer mechanism of the lightwave energy between diffraction orders. The results show that the diffraction efficiency of the +1 order decreases progressively as the conical incidence deviates from the Bragg condition, and the attenuated energy is mainly transferred into the zero order. Furthermore, the difference in diffraction efficiency between different pointing azimuths amplifies with increasing incident polar angle, which is significantly exacerbated by reducing the grating period. This indicates that the incident azimuth angle possesses a non-negligible influence on the distribution of diffraction efficiency in a 2D cascaded LCPG system with a wide angular domain. Finally, the azimuth-dependent effects on the diffraction efficiency under conical incidence are experimentally confirmed and consistent with theoretical predictions.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"33 15","pages":"32479-32489"},"PeriodicalIF":3.3,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144743771","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

Fully vectorial, high precision, and high spatial resolution flow velocity measurement in microfluidic chips using a back-focal-plane optical tweezer. 全矢量，高精度，高空间分辨率的流速测量微流控芯片使用后焦平面光镊。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2025-07-28 DOI: 10.1364/OE.567684

Shouzhuang Zhao, Yao Zhang, Qikai Chang, Yi Jiang, Shangran Xie

{"title":"Fully vectorial, high precision, and high spatial resolution flow velocity measurement in microfluidic chips using a back-focal-plane optical tweezer.","authors":"Shouzhuang Zhao, Yao Zhang, Qikai Chang, Yi Jiang, Shangran Xie","doi":"10.1364/OE.567684","DOIUrl":"https://doi.org/10.1364/OE.567684","url":null,"abstract":"Accurately monitoring the flow velocity within microfluidic chips is critical for many multidisciplinary research areas. Existing flow velocity measurement approaches, such as particle imaging and tracking velocimetry, are challenging to resolve three-dimensional flow velocities, and the measurement accuracy is affected by the particle random Brownian motion. Optical tweezer velocimetry can overcome the influence of Brownian motion at low flow rates, while at present it is strictly limited to in-plane measurement. Here we report for the first time a fully vectorial flow velocity measurement technique using a back-focal-plane single-beam optical tweezer. The technique can resolve the flow velocity distribution in microfluidic chips with tens of nanometers spatial resolution over all dimensions, along with a flow velocity measurement accuracy ∼5 times higher than the present techniques. The effects of trapping parameters on the dynamic range and sensitivity of the flow velocity measurement are investigated. The measured flow velocity distribution in both conical and Z-shaped microfluidic chips is in excellent agreement with numerical simulations, demonstrating the feasibility of the technique for resolving complex flow fields in microfluidic devices.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"33 15","pages":"31875-31883"},"PeriodicalIF":3.3,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144743723","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 propagation through an atomic vapor in the presence of a magnetic field of arbitrary direction: taking the non-orthogonality of the electric field modes into account. 在任意方向的磁场存在下，光通过原子蒸气的传播：考虑到电场模式的非正交性。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2025-07-28 DOI: 10.1364/OE.567332

Jack D Briscoe, Danielle Pizzey, Robert M Potvliege, Steven A Wrathmall, Ifan G Hughes

引用次数: 0

Tunable dual-frequency erbium-doped fiber laser using two PS-FBGs and 100 MHz beating frequency. 双频掺铒光纤激光器采用两个ps - fbg，跳动频率为100mhz。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2025-07-28 DOI: 10.1364/OE.562114

Feng Zhu, Qiao Wen

引用次数: 0

Underwater 3D images reconstruction via guided diffusion for streak tube imaging LiDAR. 条纹管成像激光雷达水下三维图像的引导扩散重建。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2025-07-28 DOI: 10.1364/OE.562113

Zelin Yue, Ping Ruan, Songmao Chen, Mengyan Fang, Yongyi Su, Hui Liu, Minglai Chen, Xing Wang, Xulei Yang, Bharadwaj Veeravalli, Xun Xu

{"title":"Underwater 3D images reconstruction via guided diffusion for streak tube imaging LiDAR.","authors":"Zelin Yue, Ping Ruan, Songmao Chen, Mengyan Fang, Yongyi Su, Hui Liu, Minglai Chen, Xing Wang, Xulei Yang, Bharadwaj Veeravalli, Xun Xu","doi":"10.1364/OE.562113","DOIUrl":"https://doi.org/10.1364/OE.562113","url":null,"abstract":"Accurate and robust 3D reconstruction for underwater streak tube imaging LiDAR (STIL) is hindered by weak echo signals and poor imaging quality due to high scattering, absorption, and turbidity. Traditional signal processing-based enhancement methods often neglect the semantic and distributional information of reconstructed objects. To address this limitation, we propose an RGBD diffusion model for denoising reconstructed images via generative refinement. Given the scarcity of underwater training data, we pre-train the diffusion model on an external dataset. To further enforce consistency between the generated content and the input, we incorporate a state-of-the-art cross-correlation algorithm (CCA) to guide the low-frequency components during the diffusion process. Experimental results demonstrate that our approach achieves higher accuracy and lower errors compared to existing methods, with a depth resolution surpassing 0.55 mm under a 0.14 m water attenuation length, significantly enhancing underwater STIL imaging performance.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"33 15","pages":"31042-31061"},"PeriodicalIF":3.3,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144743824","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

Pulmonary artery hypertension-induced vascular structure analysis using label-free fluorescence lifetime imaging. 使用无标记荧光寿命成像分析肺动脉高压诱导的血管结构。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2025-07-28 DOI: 10.1364/OE.568832

Po-Len Liu, Zhi-Wei Xu, Wen-Shuo Kuo, Chih-Hsin Hsu, Yu-Ru Liu, Min-Zhen Lu, Sheng-Bo Lai, Jui-Chi Chang, Hsiao-Hsuan Wang, Chia-Yuan Chang

{"title":"Pulmonary artery hypertension-induced vascular structure analysis using label-free fluorescence lifetime imaging.","authors":"Po-Len Liu, Zhi-Wei Xu, Wen-Shuo Kuo, Chih-Hsin Hsu, Yu-Ru Liu, Min-Zhen Lu, Sheng-Bo Lai, Jui-Chi Chang, Hsiao-Hsuan Wang, Chia-Yuan Chang","doi":"10.1364/OE.568832","DOIUrl":"https://doi.org/10.1364/OE.568832","url":null,"abstract":"Pulmonary artery hypertension (PAH) is a chronic condition characterized by pathological remodeling of the vascular structures and poor clinical prognosis. Therefore, early interventional treatment is essential to slow disease progression, improve survival rates, and enhance quality of life. In animal models of pulmonary hypertension, analyzing the remodeling of the pulmonary artery tissue and collagen deposition usually involves computed tomography and tissue staining. However, computer tomography has limited specificity and sensitivity, while preparing stained samples is labor-intensive and time-consuming. Phasor-based fluorescence lifetime imaging microscopy (FLIM), which estimates the autofluorescence decays, provides a powerful technique for detecting disease progression in biological tissue samples without staining. Accordingly, the present study proposes an integrated method combining two-photon excited fluorescence microscopy (TPEFM), FLIM, and four-color quantization (FCQ) to examine changes in the collagen distribution and average wall thickness of the pulmonary arteries in the lung tissue of three mouse models: control, monocrotaline (MCT), and MCT + magnolol. The results show that magnolol treatment significantly reduces the arterial wall thickening compared to the MCT-only group, suggesting its potential efficacy in mitigating the progression of PAH. Overall, the proposed method effectively visualizes the vascular remodeling associated with PAH and enables the severity of the PAH-induced arterial wall thickening to be quantified by calculating the wall area percentage. It thus provides a valuable tool for assessing PAH progression and evaluating the effectiveness of potential therapeutic interventions.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"33 15","pages":"31935-31948"},"PeriodicalIF":3.3,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144743682","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

Double gold nanowires photonic crystal fiber biosensor for refractive index detection. 折射率检测用双金纳米线光子晶体光纤生物传感器。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2025-07-28 DOI: 10.1364/OE.567082

Xueqing He, Mingming Zhang, Rujiang Li, Dongdong Wang, Pengfei Li

引用次数: 0