Optics and Laser Technology最新文献_第8页

Processing quality of the hybrid of laser and gas-waterjet for CFRP hole cutting: An experimental study on the effects of gas and waterjet parameters 激光与气体水射流复合切割CFRP孔的加工质量：气体和水射流参数影响的实验研究

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-05-08 DOI: 10.1016/j.optlastec.2025.113028

Yanzhao Ma , Boshen Yu , Xu Zhang , Jingrun Cai , Deng Li , Yong Wu , Yulong Chen

{"title":"Processing quality of the hybrid of laser and gas-waterjet for CFRP hole cutting: An experimental study on the effects of gas and waterjet parameters","authors":"Yanzhao Ma , Boshen Yu , Xu Zhang , Jingrun Cai , Deng Li , Yong Wu , Yulong Chen","doi":"10.1016/j.optlastec.2025.113028","DOIUrl":"10.1016/j.optlastec.2025.113028","url":null,"abstract":"<div><div>Hybrid of laser and gas-waterjet (HLGW) is a promising method for processing CFRP plates owing to the advantage of lower thermal damage and higher removal rate, but the literature is mainly focusing on linear cutting. This study investigated the effects of waterjet pressure, gas pressure, and waterjet impact angle on the processing quality of CFRP plates using this method. Hole quality at the entrance and exit was evaluated by the processing damage zone (PDZ), the roundness error, the micro and macro morphologies, and the taper. The results show that the hole quality at the entrance is more determined by the parameters, compared with the quality at the exit. Moreover, the overall average sizes of the PDZ are reduced by 13.8 % and 6.2 % at the hole entrance and exit respectively, when the waterjet impact angle is increased from 50° to 60°. The match of gas pressure and waterjet pressure significantly affects the hole quality, and the minimum PDZ, roundness error, and taper are obtained under different matches. Fiber crushing and matrix covering almost can be eliminated under gas pressure of 0.7 MPa. Besides, gas pressures of 0.5 and 0.7 MPa generally result in a smaller roundness error at both the entrance and exit. The minimum hole taper achieved is 0.1057, under waterjet impact angle of 60°, waterjet pressure of 10 MPa, and gas pressure of 0.7 MPa.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"189 ","pages":"Article 113028"},"PeriodicalIF":4.6,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143916110","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

Multi-objective optimization of the laser powder-bed fusion process of 17–4 PH stainless steel: Balancing quality and processing rate 17-4 PH不锈钢激光粉末床熔合工艺的多目标优化：平衡质量与加工率

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-05-08 DOI: 10.1016/j.optlastec.2025.113073

Chunfeng Ding , Andrew Kennedy , Yuze Huang

{"title":"Multi-objective optimization of the laser powder-bed fusion process of 17–4 PH stainless steel: Balancing quality and processing rate","authors":"Chunfeng Ding , Andrew Kennedy , Yuze Huang","doi":"10.1016/j.optlastec.2025.113073","DOIUrl":"10.1016/j.optlastec.2025.113073","url":null,"abstract":"<div><div>Reducing build time while maintaining fabrication quality is vital to broadening the industrial adoption of laser power-bed fusion (LPBF) additive manufacturing. However, the processing parameters that maximize processing rate often conflict with those optimized for mechanical properties. This study integrated physical and statistical models to establish the relationship between these optimization objectives and the process parameters, and thus utilized a multi-objective optimization (MOO) approach to maximize the localized processing rate while maintaining high part-level quality. The physical model, built based on Eagar-Tsai’s solution, offers time-efficient predictions of the melt pool dimensions and localized processing rates. The statistical model, developed using a multiple-output Gaussian process (MOGP), incorporates the correlation between the part-level objectives based on their experimental measurements. Compared with the other three traditional MOO algorithms in terms of Pareto front solution diversity, root mean square error (RMSE), and run time, we found that: (i) the nonlinear relationships between the part-level objectives, i.e. surface roughness and relative density, could be established using the MOGP; (ii) the MOGP model demonstrated higher prediction accuracy for part-level objectives than both the second-order polynomial (SOP) and standard Gaussian process (GP) models; and (iii) the developed MOO, based on the expected hypervolume improvement (EHI) active learning strategy, proved superior to those established by non-dominated sorting genetic algorithm II (NSGA-II), achieving a 14 % reduction in RMSE while reducing the run time by 25 %.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"189 ","pages":"Article 113073"},"PeriodicalIF":4.6,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922364","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

Cr atom lithography grating and wavelet-based phase demodulation self-mixing interferometer for traceable nanoscale displacement metrology 铬原子光刻光栅和基于小波相位解调的自混合干涉仪用于可追溯的纳米位移测量

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-05-08 DOI: 10.1016/j.optlastec.2025.113137

Zhikun Chang , Song Song , Xiaoling Han , Haoran Zhang , Yuchen Wei , Guangxu Xiao , Xiao Deng , Dongbai Xue , Chunling He , Yuying Xie , Xinbin Cheng , Tongbao Li

{"title":"Cr atom lithography grating and wavelet-based phase demodulation self-mixing interferometer for traceable nanoscale displacement metrology","authors":"Zhikun Chang , Song Song , Xiaoling Han , Haoran Zhang , Yuchen Wei , Guangxu Xiao , Xiao Deng , Dongbai Xue , Chunling He , Yuying Xie , Xinbin Cheng , Tongbao Li","doi":"10.1016/j.optlastec.2025.113137","DOIUrl":"10.1016/j.optlastec.2025.113137","url":null,"abstract":"<div><div>High-precision nanoscale displacement measurements are crucial in semiconductor manufacturing, nanotechnology, and ultra-precision machining. The Laser Self-Mixing Grating Interferometer (SMGI) has gained widespread adoption due to its compact design, low cost, and high precision. However, its precision has been constrained by limitations in grating performance and phase resolution methods. In this study, we propose a novel SMGI system incorporating a chromium (Cr) atom lithography grating with a high line density of 4700 lines/mm, achieving picometer-level pitch accuracy. This advancement significantly enhances measurement precision. Furthermore, we introduce a Continuous Wavelet & Hilbert Transform (CWHT) algorithm to improve robustness in direction discrimination and phase resolution. Experimental results demonstrate that the system achieves an expanded uncertainty (<em>k =</em> 2) of 7.8 nm within a 20 μm range. This proposed system offers a compact (optical path dimensions: 49 mm × 49 mm × 20 mm), traceable, and high-precision displacement measurement solution for ultra-precision manufacturing, while also introducing an innovative signal processing approach for self-mixing interferometry. These advancements could advance nanoscale displacement measurement technology and may provide a practical solution for high-precision industrial applications.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"189 ","pages":"Article 113137"},"PeriodicalIF":4.6,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922365","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

Single-wavelength 100-Gbps PAM-4 TDM-ZR-PON supporting 80-km downstream transmission with Over 31-dB power budget enabled by BDFA and SFO compensation 单波长100 gbps PAM-4 TDM-ZR-PON支持80公里下游传输，通过BDFA和SFO补偿实现超过31 db的功率预算

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-05-08 DOI: 10.1016/j.optlastec.2025.113025

Jianyu Long , Chen Wang , Jianjun Yu , Bohan Sang , Xiongwei Yang , Yifan Chen , Long Zhang , Ying Wu , Ying Wang , Yichen Li , Kaihui Wang , Wen Zhou , Li Zhao , Tingyun Wang , Jianxiang Wen , Feng Zhao , Yingxiong Song , Yanyi Wang , Jiao Zhang , Min Zhu

{"title":"Single-wavelength 100-Gbps PAM-4 TDM-ZR-PON supporting 80-km downstream transmission with Over 31-dB power budget enabled by BDFA and SFO compensation","authors":"Jianyu Long , Chen Wang , Jianjun Yu , Bohan Sang , Xiongwei Yang , Yifan Chen , Long Zhang , Ying Wu , Ying Wang , Yichen Li , Kaihui Wang , Wen Zhou , Li Zhao , Tingyun Wang , Jianxiang Wen , Feng Zhao , Yingxiong Song , Yanyi Wang , Jiao Zhang , Min Zhu","doi":"10.1016/j.optlastec.2025.113025","DOIUrl":"10.1016/j.optlastec.2025.113025","url":null,"abstract":"<div><div>Single-wavelength intensity modulation/direct detection (IM/DD) passive optical networks (PONs) with less system costs and digital signal processing (DSP) complexity are still promising in the next generation of 100 Gbps PON systems, compared with the coherent scheme. In this paper, we propose to use a digital-interpolation-based sampling frequency offset (SFO) compensation method and bismuth-doped fiber amplifier (BDFA) in a single-wavelength 100-Gbps PAM-4 80-km-reach time-division multiplexing- (TDM-)ZR-PON downstream transmission system in the O-band, achieving a power budget of 31.1 dB by experimental demonstration. The BDFA with lower nonlinearity compared to semiconductor optical amplifier (SOA), ensures superior bit error rate (BER) performance for 50-GBaud 4-level pulse amplitude modulation (PAM-4) signals over 80-km standard single-mode-fiber (SSMF) transmission. Meanwhile, the proposed SFO compensation method maintains steady BER performance below the threshold, effectively addressing SFO up to 1000 ppm or payload durations up to 60 microseconds. In contrast, neglecting SFO or relying solely on the widely-used timing recovery Gardner method with near symbol interpolation proves insufficient for such scenarios. We also analyze SFO-induced inter-symbol interference (ISI) and demonstrate how it disrupts digital equalizers and universal clock recovery algorithms like Gardner’s method.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"189 ","pages":"Article 113025"},"PeriodicalIF":4.6,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922439","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

Performance enhancement of nonlinear pulse amplification in large-mode-area multimode gain fibers via pump configuration optimization 通过泵浦结构优化提高大模区多模增益光纤非线性脉冲放大性能

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-05-08 DOI: 10.1016/j.optlastec.2025.113116

Guohao Fu , Wasyhun A. Gemechu , Yicong Liu , Dan Li , Qirong Xiao , Ping Yan

{"title":"Performance enhancement of nonlinear pulse amplification in large-mode-area multimode gain fibers via pump configuration optimization","authors":"Guohao Fu , Wasyhun A. Gemechu , Yicong Liu , Dan Li , Qirong Xiao , Ping Yan","doi":"10.1016/j.optlastec.2025.113116","DOIUrl":"10.1016/j.optlastec.2025.113116","url":null,"abstract":"<div><div>Harnessing multimode nonlinear pulse amplification is an effective way to generate pulses that have broader spectra, shorter durations, and higher energies. Yet, as energy levels increase, a formidable challenge arises—spatiotemporal deterioration (STD), which compromises beam and compression quality. To address these issues, this study examines the effects of co-pumping, counter-pumping, and bidirectional pumping on STD in a double-cladding, large-mode-area Yb-doped nonlinear pulse amplifier. Grounded in a rigorous theoretical framework, we introduce advanced simulation methods and present a novel spatiotemporal quality factor to evaluate modal pulse performance. Our findings highlight a significant difference in amplification dynamics: co-pumping promotes gain-managed nonlinear amplification which extends the spectrum beyond the gain bandwidth but results in considerable STD and increased pedestal energy—limitations that ultimately restrict peak power. Conversely, counter-pumping enables self-similar amplification, a method that is more resilient to STD, leading to enhanced beam quality and higher peak power after compression. By deepening our understanding of nonlinear pulse dynamics, this research contributes to the theory and design principles of high-energy ultrafast fiber amplifiers.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"189 ","pages":"Article 113116"},"PeriodicalIF":4.6,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143916109","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

Programmed Achromatic and Wide Field-of-View Retarder Using Form Birefringence of Template-Grown ZnO nanostructures 利用模板生长ZnO纳米结构形成双折射的程序化消色差和宽视场缓速器

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-05-08 DOI: 10.1016/j.optlastec.2025.113011

Manh-Thang Tran , Nguyen-Hung Tran , Ji-Hoon Lee

引用次数: 0

Linear and nonlinear optical periodic microstructures in niobium germanate glasses by thermal poling 热极化法在锗酸铌玻璃中的线性和非线性光学周期微结构

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-05-08 DOI: 10.1016/j.optlastec.2025.113130

Lia Mara Marcondes , Juliane Resges Orives , Frederic Adamitez , Julien Hunel , Yannick Petit , Lionel Canioni , Thierry Cardinal , Marc Dussauze , Marcelo Nalin

{"title":"Linear and nonlinear optical periodic microstructures in niobium germanate glasses by thermal poling","authors":"Lia Mara Marcondes , Juliane Resges Orives , Frederic Adamitez , Julien Hunel , Yannick Petit , Lionel Canioni , Thierry Cardinal , Marc Dussauze , Marcelo Nalin","doi":"10.1016/j.optlastec.2025.113130","DOIUrl":"10.1016/j.optlastec.2025.113130","url":null,"abstract":"<div><div>Optical microstructures imprinted in niobium germanate glasses by thermal poling were investigated by correlating Raman, phase contrast imaging, Second Harmonic Generation (SHG) and Atomic Force Microscopy (AFM) measurements. Structural characterizations by Raman microscopy have shown the presence of gradient in-plane poling effects. By varying the microscale anode designs, it has been observed that the difference between the size of the in-plane gradient poling effect and the pitch dimension of the electrode patterns can explain the refractive index contrast at the micrometer scale. SHG signals were localized in microregions located at the edges of the micropatterned anode electrode and the electro-optical origin of the second-order optical responses has been confirmed. Finally, the SHG responses of second-order optical diffraction gratings were studied. The observation of well-defined SHG optical diffraction peaks demonstrates the potential of these EFISH structuration in niobium germanate glasses for the development of nonlinear optical (NLO) micro-scale periodical designs. In this perspective, this paper demonstrated the implementation of NLO properties in germanate glasses containing a wide transmission window and promising for NLO photonic applications such as infrared wavelength conversion and electro-optical devices.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"189 ","pages":"Article 113130"},"PeriodicalIF":4.6,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143923819","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

Microstructure and fretting wear properties of Ti-Al coatings fabricated by laser cladding on a Ti-6Al-4V alloy Ti-6Al-4V合金激光熔覆Ti-Al涂层的显微组织和微动磨损性能

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-05-08 DOI: 10.1016/j.optlastec.2025.113066

Zhen Gong , Daosheng Wen , Beibei Kong , Yang Qiao , Zhen Xiao , Yuhang Wang , Yanxing Ding , Qinghua Lv , Minghao Zhang , Yongshuo Sun , Shouren Wang

{"title":"Microstructure and fretting wear properties of Ti-Al coatings fabricated by laser cladding on a Ti-6Al-4V alloy","authors":"Zhen Gong , Daosheng Wen , Beibei Kong , Yang Qiao , Zhen Xiao , Yuhang Wang , Yanxing Ding , Qinghua Lv , Minghao Zhang , Yongshuo Sun , Shouren Wang","doi":"10.1016/j.optlastec.2025.113066","DOIUrl":"10.1016/j.optlastec.2025.113066","url":null,"abstract":"<div><div>In this study, Ti-Al coatings were successfully deposited on a Ti-6Al-4V alloy through laser cladding technology. The microstructure of the Ti-Al coatings was investigated, and the optimal process parameters were determined. Fretting wear properties of the Ti-Al coatings were analyzed. The results showed that the Ti-Al coating samples exhibited a gradient microstructure. With the increase in laser power and powder feeding rate, the Ti-Al coating samples exhibited better mechanical properties due to finer grains, stronger texture component, and higher microhardness. In the fretting wear properties, the gradient microstructure of the Ti-Al coating sample led to an increase in microhardness. An increase in hardness within a certain range leads to a decrease in wear weight loss, which improves wear properties. Meanwhile, the debris formed a third body layer that acted as a solid lubricant, significantly reducing the average coefficient of friction (COF) and wear volume, thus improving the wear resistance properties. Moreover, the wear mechanisms of Ti-6Al-4V and Ti-Al coating samples under different normal loads were elucidated.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"189 ","pages":"Article 113066"},"PeriodicalIF":4.6,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922441","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

Parallel fiber-optic semi-distributed biosensor for detection of IL-6 and IL-8 cancer biomarkers in saliva at femtomolar limit 平行光纤半分布式生物传感器在飞摩尔极限下检测唾液中IL-6和IL-8癌症标志物

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-05-07 DOI: 10.1016/j.optlastec.2025.113139

Aida Zhakypbekova , Aliya Bekmurzayeva , Wilfried Blanc , Daniele Tosi

引用次数: 0

MRFuse: Metric learning and masked autoencoder for fusing real infrared and visible images MRFuse：用于融合真实红外和可见光图像的度量学习和掩码自动编码器

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-05-07 DOI: 10.1016/j.optlastec.2025.112971

YuBin Li , Weida Zhan , Jinxin Guo , Depeng Zhu , Yichun Jiang , Yu Chen , Xiaoyu Xu , Deng Han

{"title":"MRFuse: Metric learning and masked autoencoder for fusing real infrared and visible images","authors":"YuBin Li , Weida Zhan , Jinxin Guo , Depeng Zhu , Yichun Jiang , Yu Chen , Xiaoyu Xu , Deng Han","doi":"10.1016/j.optlastec.2025.112971","DOIUrl":"10.1016/j.optlastec.2025.112971","url":null,"abstract":"<div><div>The task of infrared and visible image fusion aims to retain the thermal targets from infrared images while preserving the details, brightness, and other important features from visible images. Current methods face challenges such as unclear fusion objectives, difficulty in interpreting the learning process, and uncontrollable auxiliary learning weights. To address these issues, this paper proposes a novel fusion method based on metric learning and masked autoencoders for real infrared and visible image fusion, termed MRFuse. MRFuse operates through a combination of metric mapping space, auxiliary networks, and fusion networks. First, we introduce a Real Degradation Estimation Module (RDEM), which employs a simple neural network to establish a controllable degradation estimation scheme within the metric space. Additionally, to train the metric space, we propose a sample generation method that provides complex training samples for the metric learning pipeline. Next, we present a fusion network based on masked autoencoding. Specifically, we construct hybrid masked infrared and visible image pairs and design a U-shaped ViT encoder–decoder architecture. This architecture leverages hierarchical feature representation and layer-wise fusion to reconstruct high-quality fused images. Finally, to train the fusion network, we design a masked region loss to constrain reconstruction errors within masked regions, and further employ gradient loss, structural consistency loss, and perceptual loss to enhance the quality of the fused images. Extensive experiments demonstrate that MRFuse exhibits superior controllability and excels in suppressing noise, blur, and glare, outperforming other state-of-the-art methods in both subjective and objective evaluations.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"189 ","pages":"Article 112971"},"PeriodicalIF":4.6,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143912097","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