Applied optics最新文献

Deep learning-enhanced holographic wavefront sensor for high-order aberration sensing. 基于深度学习的高阶像差全息传感器。

Applied optics Pub Date : 2025-09-20 DOI: 10.1364/AO.574070

Ming Liu, Bing Dong

引用次数: 0

LiDAR-based displacement measurement and data decoupling method for biaxial fatigue testing of wind turbine blades. 基于激光雷达的风力机叶片双轴疲劳试验位移测量与数据解耦方法。

Applied optics Pub Date : 2025-09-20 DOI: 10.1364/AO.571730

Aiguo Zhou, Yikun Shang, Jinlei Shi, Yutian Zhu, Xiufeng Xu

引用次数: 0

Metasurface-based terahertz TE₁₀-TE₀₁ mode converter. 基于超表面的太赫兹TE10-TE01模式转换器。

Applied optics Pub Date : 2025-09-20 DOI: 10.1364/AO.568826

Boyi Yang, Xiaojie Guo, Yinghao Guo, Guobin Ren

{"title":"Metasurface-based terahertz TE10-TE01 mode converter.","authors":"Boyi Yang, Xiaojie Guo, Yinghao Guo, Guobin Ren","doi":"10.1364/AO.568826","DOIUrl":"https://doi.org/10.1364/AO.568826","url":null,"abstract":"We designed a compact broadband mode converter based on metasurface technology, operating in the 180-210 GHz band (the effective bandwidth is approximately 22 GHz), which achieves high-efficiency conversion from the TE10 mode in a standard WR-4 rectangular waveguide to the TE01 mode in a circular waveguide. The mode converter consists of two sub-mode converters: the first, based on a magic-T waveguide, transforms the TE10 mode into the TE20 mode, and the second, based on a metasurface, converts the TE20 mode into the TE01 mode. Simulation results demonstrate that the conversion efficiency from the TE10 mode to the TE01 mode reaches a maximum of 88.3% (184.6 GHz), with a return loss 8.4%. This metasurface-based mode converter can replace traditional complex transitional waveguide structures, providing a solution for generating high-quality TE01 mode in the terahertz band. Furthermore, the theoretical approach can be extended to the generation of other modes in the terahertz band.","PeriodicalId":101299,"journal":{"name":"Applied optics","volume":"64 27","pages":"8104-8112"},"PeriodicalIF":0.0,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116031","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

Free-running operation of a semi-monolithic LBO-based resonant cavity for high-power continuous-wave second-harmonic generation. 用于大功率连续波二次谐波产生的半单片lbo谐振腔的自由运行。

Applied optics Pub Date : 2025-09-20 DOI: 10.1364/AO.573796

Sébastien Vidal, Valérian Freysz, Damien Bonaudo, Dominique Lupinski, Marc Castaing

引用次数: 0

Frequency detuning analysis in multi-chirp range-selective digital holography with temporal heterodyning. 时间外差的多啁啾范围选择数字全息的频率失谐分析。

Applied optics Pub Date : 2025-09-20 DOI: 10.1364/AO.571313

Cole Hammond, R Krishna Mohan, Wm Randall Babbitt

{"title":"Frequency detuning analysis in multi-chirp range-selective digital holography with temporal heterodyning.","authors":"Cole Hammond, R Krishna Mohan, Wm Randall Babbitt","doi":"10.1364/AO.571313","DOIUrl":"https://doi.org/10.1364/AO.571313","url":null,"abstract":"Range-selective digital holography (RSDH) is an advanced imaging technique that combines digital holography with the range-selective capabilities of frequency-modulated continuous-wave (FMCW) chirped lidar. Temporal heterodyne FMCW range-selective digital holography (TH FMCW RSDH) further extends this method by incorporating phase-shifting techniques to enable on-axis holographic imaging. In standard implementations, maximum hologram strength is achieved when the local oscillator (LO) frequency shift is set by the target distance, assuming that the hologram integration and chirp duration are aligned. However, in systems where hologram integration spans multiple chirps, this alignment is no longer guaranteed, and the optimal LO frequency shift may deviate from the nominal value. This work develops a theoretical framework to analyze the effects of LO detuning on range resolution and hologram strength in TH FMCW RSDH under multi-chirp integration. The model is experimentally validated using a time-of-flight (ToF) camera to perform phase-shifting and integration. Our results demonstrate that maximum hologram strength can occur at LO frequency shifts that differ from the nominal range-dependent value. These findings provide valuable insights for optimizing the performance of both TH and non-TH FMCW RSDH systems in scenarios where hologram integration spans multiple chirps.","PeriodicalId":101299,"journal":{"name":"Applied optics","volume":"64 27","pages":"8077-8087"},"PeriodicalIF":0.0,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116002","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

All-fiber polarization-maintained figure-9 laser with frequency locking at a repetition rate of 247 MHz. 全光纤保偏图9激光器，频率锁定，重复频率为247mhz。

Applied optics Pub Date : 2025-09-20 DOI: 10.1364/AO.574294

T F Wu, Y J Yang, C Y Li, C Q Xia, J B Han, Y W Gao, L Zhang

引用次数: 0

Mid-spatial frequency error characteristics induced by tool influence function in bonnet polishing. 阀盖抛光中刀具影响函数引起的中频误差特性

Applied optics Pub Date : 2025-09-20 DOI: 10.1364/AO.566380

Lirong Peng, Yiren Wang, Longxiang Li, Fenghua Shi, Zhongyang Lu, Donglin Xue, Xiaoqin Zhou, Xuejun Zhang

{"title":"Mid-spatial frequency error characteristics induced by tool influence function in bonnet polishing.","authors":"Lirong Peng, Yiren Wang, Longxiang Li, Fenghua Shi, Zhongyang Lu, Donglin Xue, Xiaoqin Zhou, Xuejun Zhang","doi":"10.1364/AO.566380","DOIUrl":"https://doi.org/10.1364/AO.566380","url":null,"abstract":"Bonnet polishing, a cost-effective and high-precision polishing technique with remarkable adaptability, is widely utilized in the precision machining of complex curved surfaces. However, mid-spatial frequency (MSF) error residuals significantly constrain its convergence efficiency in form error correction and ultimate machining accuracy. This paper investigates the influence of tool removal function characteristics on MSF errors during bonnet polishing. Initially, the theoretical removal functions under varying tool and process conditions were derived through finite element simulations, with the computational framework grounded in Preston's law, Hertzian contact mechanics, and kinematic analysis. Subsequently, a spectral-domain simulation model was developed to quantify MSF error residuals on optically finished surfaces based on the characterized removal functions. The simulation results indicate that under conditions of larger curvature bonnets and lower air pressure, the MSF error residuals are smaller. Finally, experiments were conducted on a high-precision flat fused silica element with a diameter of 100 mm to validate the MSF prediction model, and the experimental results showed good consistency with the simulation results. The findings of this study provide critical guidance for suppressing MSF errors in high-precision bonnet polishing applications.","PeriodicalId":101299,"journal":{"name":"Applied optics","volume":"64 27","pages":"8026-8036"},"PeriodicalIF":0.0,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116022","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

Ultra-compact dynamic OAM generator based on Sb₂S₃. 基于Sb2S3的超紧凑动态OAM发生器。

Applied optics Pub Date : 2025-09-20 DOI: 10.1364/AO.574174

Wenhui Dong, Zifeng Zhang, Zhibo Fang, Rongquan Chen, Ming Chen

{"title":"Ultra-compact dynamic OAM generator based on Sb2S3.","authors":"Wenhui Dong, Zifeng Zhang, Zhibo Fang, Rongquan Chen, Ming Chen","doi":"10.1364/AO.574174","DOIUrl":"https://doi.org/10.1364/AO.574174","url":null,"abstract":"Integrated photonics is increasingly widely applied in fields such as optical communication and optical micro-operation, especially demonstrating great potential in the dynamic regulation of light wave characteristics. The orbital angular momentum (OAM) carried by vortex beams offers abundant orthogonal channels for optical communication; however, existing generation approaches frequently encounter issues such as large volume, high cost, and complex structure. This paper successfully realizes an ultra-compact dynamic OAM generation device by integrating phase-change materials with a trench waveguide. The device can dynamically generate OAM modes with topological charges of ±1, without changing the physical structure by taking advantage of the refractive index difference between the crystalline and amorphous states of the phase change materials. This design not only reduces the device length to 9.5µm but also enhances its applicability to multiple wavelengths of light waves, presenting extensive possibilities for the development of new photonic devices and systems in fields such as optical communication, quantum information processing, and optical micro-operation.","PeriodicalId":101299,"journal":{"name":"Applied optics","volume":"64 27","pages":"8046-8050"},"PeriodicalIF":0.0,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116083","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

Supervising radar depth completion using the monocular depth large model. 利用单目深度大模型监督雷达深度完井。

Applied optics Pub Date : 2025-09-20 DOI: 10.1364/AO.569559

Jimin Chen, Zili Zhou, Zhu Yu, Fuyi Zhang, Jiacheng Ying, Si-Yuan Cao, Hui-Liang Shen

引用次数: 0

Scene contrast temperature in two different climates. 两种不同气候下的场景温度对比。

Applied optics Pub Date : 2025-09-20 DOI: 10.1364/AO.570757

Alfred Moore, Angus Hendrick, Patrick Leslie, Ronald Driggers, Eddie Jacobs

引用次数: 0