Optics express最新文献_第2页

Research on impact of range resolutions on wind detection performance using virtual lidar. 距离分辨率对虚拟激光雷达风探测性能的影响研究。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2025-07-28 DOI: 10.1364/OE.562053

Jiaxiu Liu, Jinlong Yuan, Haoyu Yang, Anning Chen, Yuanhao Gu, Tianwen Wei, Haiyun Xia

{"title":"Research on impact of range resolutions on wind detection performance using virtual lidar.","authors":"Jiaxiu Liu, Jinlong Yuan, Haoyu Yang, Anning Chen, Yuanhao Gu, Tianwen Wei, Haiyun Xia","doi":"10.1364/OE.562053","DOIUrl":"https://doi.org/10.1364/OE.562053","url":null,"abstract":"The impact of range resolution on the accuracy of wind lidar cannot be ignored, which is quantitatively evaluated using virtual lidar. This study conducts a comparative analysis of three virtual lidar generation methods: the direct averaging method, the energy weighting method, and the time-domain analysis method. The error assessment between the wind retrieved by virtual lidar and the reference wind is carried out. Results show that insufficient range resolution can cause underestimation and misalignment of wind speed extremes. Moreover, there are differences in the retrieval results generated by the three virtual lidar methods. Based on these findings, a dimensionless parameter is proposed to decouple the relationship between range resolution and wind field scale. The fitting relationships between this parameter and error metrics are established, enabling the selection of the optimal virtual lidar generation method for different scenarios. Finally, wind speed errors and image similarity metrics are combined to comprehensively evaluate the impact of range resolutions on detection of typical building wake flow. This research provides a vital foundation for evaluating the wind field detection performance of coherent Doppler wind lidar, which remains applicable to direct detection wind lidar.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"33 15","pages":"32386-32397"},"PeriodicalIF":3.3,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144743772","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

Tilted thick light-sheet microscopy with context-aware 3D localization for RNA imaging in intact 50 μm-thick sections. 在50 μm厚的完整切片上，具有上下文感知3D定位的倾斜厚光片显微镜用于RNA成像。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2025-07-28 DOI: 10.1364/OE.570174

Lin Cai, Qihang Song, Dongjian Cao, Qihuan Li, Wancheng Wu, Yinghao Xiao, Xingguang Chen, Shujing Huang, Jie Yang, Yingjun Zhang, Zhen-Li Huang

{"title":"Tilted thick light-sheet microscopy with context-aware 3D localization for RNA imaging in intact 50 μm-thick sections.","authors":"Lin Cai, Qihang Song, Dongjian Cao, Qihuan Li, Wancheng Wu, Yinghao Xiao, Xingguang Chen, Shujing Huang, Jie Yang, Yingjun Zhang, Zhen-Li Huang","doi":"10.1364/OE.570174","DOIUrl":"https://doi.org/10.1364/OE.570174","url":null,"abstract":"Neuron typing in intact brain sections demands 3D imaging reconciling thickness compatibility with large-area coverage, which is a persistent challenge for RNA imaging methods limited by either imaging area (< 1 mm2) or section thickness (< 20 μm). Here we introduce tilted thick light-sheet microscopy integrated with a context-aware 3D astigmatic localization algorithm based on continuous frame filtering, enabling multiplexed RNA imaging across 50 μm-thick tissue sections and centimeter-scale regions. The 45° illumination geometry achieves optical-interference-free imaging in a 50 μm-thick sample, while a context-aware 3D localization algorithm recovers submicron resolution by pinpointing fluorescence in situ hybridization (FISH) spots within volumetric excitation. This strategy could reveal layer-spanning neuronal distributions and region-specific expression gradients unattainable with conventional RNA imaging approaches. By resolving the trade-off between imaging depth and spatial coverage, our platform advances whole-brain transcriptomics and has the potential to carry out 3D neuron typing, which is critical for deciphering brain-wide cellular architectures.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"33 15","pages":"32850-32861"},"PeriodicalIF":3.3,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144743815","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

Chiral hotspots via hollow silicon nanoparticles illuminated by vector Bessel beams. 矢量贝塞尔光束照射下中空硅纳米颗粒的手性热点。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2025-07-28 DOI: 10.1364/OE.559016

Masoomeh Zand, Mirfaez Miri

引用次数: 0

Coherent beam combining of ns-pulse fiber amplifiers to > 110 W average power at 1550 nm. 相干光束组合的ns脉冲光纤放大器在1550nm处的平均功率为1010w。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2025-07-28 DOI: 10.1364/OE.569498

Brian Boland, Katherine Palombo, Maurice Halmos, Erik Muniz, Fabio Di Teodoro

引用次数: 0

Prediction and symbolification of optical chaos based on Kolmogorov-Arnold network. 基于Kolmogorov-Arnold网络的光学混沌预测与符号化。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2025-07-28 DOI: 10.1364/OE.566266

Dawei Gao, Xinyao Cao, Yuanlong Fan

引用次数: 0

Quantifying imaging imperfections resulting from nonideal fill factor and similar pixel-scale responsivity nonuniformities. 量化由非理想填充因子和类似的像素级响应性不均匀造成的成像缺陷。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2025-07-28 DOI: 10.1364/OE.558153

Torbjørn Skauli

{"title":"Quantifying imaging imperfections resulting from nonideal fill factor and similar pixel-scale responsivity nonuniformities.","authors":"Torbjørn Skauli","doi":"10.1364/OE.558153","DOIUrl":"https://doi.org/10.1364/OE.558153","url":null,"abstract":"Image sensors can exhibit variations in the responsivity to light across the area of individual pixels. If the responsivity is uniform apart from a region with zero sensitivity, the situation is well described by the conventional concept of a fill factor, which gives the fraction of sensitive area in the pixel. In many practical cases, such responsivity variations are gradual, due to effects such as photon scattering or photoelectron diffusion between neighboring pixels. When characterizing the spatial responsivity of a complete camera, optical blur will tend to smear out pixel-scale variations. This paper generalizes the concept of a fill factor to cover such gradual sensitivity variations within a pixel, for an image sensor as well as for a complete camera. The core idea is that the effective fill factor (EFF) is the fill factor of a box-shaped pixel response that would produce the same maximum error in estimated reflectance as the actual camera response, when viewing a reflective scene. The resulting EFF is derived from the pixel sampling point spread function and sampling interval. It has a simple relation to an upper bound on the error in reflectance estimated from a reflected-light image. The EFF also has a simple relation to the average error in the total signal from a point source. It is noted that the spatial variation causing these image artifacts is specifically the variation of signal loss across the pixel. The EFF can supplement specification of many camera types, including thermal cameras as well as color and multispectral cameras based on filter arrays.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"33 15","pages":"32140-32154"},"PeriodicalIF":3.3,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144743683","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

Development of a wide-field-of-view head-mounted display utilizing freeform surfaces for oblique projection. 利用自由曲面进行斜投影的宽视场头戴式显示器的开发。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2025-07-28 DOI: 10.1364/OE.565210

Da Wang, Dewen Cheng, Yue Liu, Yuefan Shan, Jiaping Sun, Ximeng Wang, Yongtian Wang

{"title":"Development of a wide-field-of-view head-mounted display utilizing freeform surfaces for oblique projection.","authors":"Da Wang, Dewen Cheng, Yue Liu, Yuefan Shan, Jiaping Sun, Ximeng Wang, Yongtian Wang","doi":"10.1364/OE.565210","DOIUrl":"https://doi.org/10.1364/OE.565210","url":null,"abstract":"Augmented reality (AR) technology overlays digital content onto the real world, in contrast to virtual reality (VR), which immerses users in a fully virtual environment. This fundamental distinction enables AR users to maintain continuous interaction with their physical surroundings while receiving enhanced digital information. In AR system design, optimizing both perspective effects and imaging performance is crucial. However, achieving a wide field of view (FOV), high resolution, and comfortable wearability in a head-mounted display (HMD) remains highly challenging. This paper presents a novel design methodology for a wide-FOV HMD system based on freeform optics and ipsilateral oblique projection. A multi-objective optimization framework, combining the non-dominated sorting genetic algorithm II (NSGA-II) and prior design knowledge, is employed to balance critical parameters such as image quality, weight, and cost. The resulting AR display achieves a full FOV of 75° × 40° and an exit pupil diameter of 14 × 12 mm-representing the widest FOV among comparable systems to date. Moreover, the ipsilateral oblique projection architecture brings the projection lens group closer to the user's head and reduces the tilt angle of the reflective visor, thereby enhancing ergonomic comfort. This configuration also reduces FOV losses due to stitching between intermediate reflective mirrors. The final assembled system demonstrates outstanding overall performance.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"33 15","pages":"32209-32226"},"PeriodicalIF":3.3,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144743705","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

Effect of spin-orbit coupling on high-order harmonic generation in atoms. 自旋轨道耦合对原子高次谐波产生的影响。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2025-07-28 DOI: 10.1364/OE.561018

Changtong Liang, Xiaopeng Yi, Shilin Hu, Jing Chen

{"title":"Effect of spin-orbit coupling on high-order harmonic generation in atoms.","authors":"Changtong Liang, Xiaopeng Yi, Shilin Hu, Jing Chen","doi":"10.1364/OE.561018","DOIUrl":"https://doi.org/10.1364/OE.561018","url":null,"abstract":"We present an ab initio investigation of the influence of spin-orbit coupling (SOC) on high-order harmonic generation (HHG) in hydrogen atoms by numerically solving the time-dependent Schrödinger equation including the SOC term (TDSE-SOC). We find that the SOC does not affect the HHG spectra produced by the initial ground state. However, for the excited state 2P, and its spin-split 2P3/2 and 2P1/2 states which are superpositions of ml = 0 and ml = 1 wave functions, the harmonic yields generated from the above three states vary significantly. We developed a modified strong-field approximation theory incorporating the spin-split states to analyze the SOC effect on HHG spectra. Considering the depletion of bound states, the simulation results are qualitatively consistent with the TDSE calculations. Analysis indicates that the ml = 0 component in the spin-split 2P states predominantly contributes to harmonic yields, and the ml = 1 component has a non-negligible influence on lower-energy harmonics in a linearly polarized laser field.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"33 15","pages":"32603-32614"},"PeriodicalIF":3.3,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144743711","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

Nanosecond pulsed Raman yellow laser operating at 573 and 582 nm. 工作波长为573和582 nm的纳秒脉冲拉曼黄色激光器。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2025-07-28 DOI: 10.1364/OE.570338

Peining Chen, Zefeng Xiao, Chuan Guo, Weifeng Tan, Rongzhuo Chen, Shibo Dai, Siqi Zhu, Hao Yin, Zhen Li, Zhenqiang Chen

{"title":"Nanosecond pulsed Raman yellow laser operating at 573 and 582 nm.","authors":"Peining Chen, Zefeng Xiao, Chuan Guo, Weifeng Tan, Rongzhuo Chen, Shibo Dai, Siqi Zhu, Hao Yin, Zhen Li, Zhenqiang Chen","doi":"10.1364/OE.570338","DOIUrl":"https://doi.org/10.1364/OE.570338","url":null,"abstract":"A high-beam-quality nanosecond pulsed pro-yellow laser is demonstrated based on an acousto-optically Q-switched intracavity frequency-doubled KGW Raman laser driven by the 1053 nm Nd:YLF laser on the σ polarization. Compared to the π-polarization emission of Nd:YLF crystal, the σ-polarization emission induces a weaker thermal lensing effect, thereby enhancing both the beam quality and thermal stability of the pro-yellow laser without requiring additional optical compensation elements. Two distinct first-Stokes lasers at 1146 and 1164 nm are produced benefiting from the bi-axial properties of KGW crystal, and subsequently frequency-doubled to 573 and 582 nm via a critically phase-matched LBO crystal. Both experimental results and theoretical analysis manifest that the decreased gate-open time within the microsecond range can increase the nonlinear conversion efficiency. Under the incident pump power of 36.9 W and the duty cycle of 1%, the maximum average powers reach 2.5 and 3.4 W with the pulse durations of 8.3 and 7.6 ns at the repetition rate of 5 kHz, respectively. Additionally, at the repetition rate of 1 kHz, the pulse energies are elevated to 2.0 and 2.8 mJ with the pulse durations of 6.2 and 5.3 ns, respectively, corresponding to the peak powers of 323 and 533 kW. The M2 factor maintains below 1.6 across the entire output power range.","PeriodicalId":19691,"journal":{"name":"Optics express","volume":"33 15","pages":"31334-31343"},"PeriodicalIF":3.3,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144743756","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

On-chip diffractive optical neural network based on binary metasurfaces. 基于二元超表面的片上衍射光学神经网络。

IF 3.3 2区物理与天体物理

Optics express Pub Date : 2025-07-28 DOI: 10.1364/OE.567722

Kang Yang, Jian Lin, Pengjun Wang, Weiwei Chen, Shixun Dai, Li Lin, Jiafeng Ni, Qiang Fu, Jun Li, Tingge Dai, Jianyi Yang

引用次数: 0