Optics & Laser Technology最新文献

In-situ induction of high conductive graphene film on Kevlar with GHz femtosecond laser for potential aircraft applications 用GHz飞秒激光在凯夫拉尔上原位感应高导电石墨烯薄膜，用于潜在的飞机应用

Optics & Laser Technology Pub Date : 2026-06-27 DOI: 10.1016/j.optlastec.2026.115751

Jian Cheng, Yuehua Chen, Xi Zhang, Lie Chen, Qibiao Yang, Xixing Li, Zhongsheng Zhai, Dun Liu

引用次数: 0

Optical parameter determination in chiral media: Refractive index and Pasteur parameter insights 手性介质的光学参数测定：折射率和巴斯德参数

Optics & Laser Technology Pub Date : 2025-10-04 DOI: 10.1016/j.optlastec.2025.114028

Qiwei Miao, Fengyang Jia, Jiajie Chen, Xin Wang, Lixun Sun, Fanfan Lu, Wending Zhang, Ting Mei

引用次数: 0

High-brightness low voltage alternative current electroluminescent devices for human wearable displays 用于人体可穿戴显示器的高亮度低电压交流电致发光装置

Optics & Laser Technology Pub Date : 2025-02-04 DOI: 10.1016/j.optlastec.2025.112568

Jiahao Li, Yong Lin, Dong Zhou, Shuo Zhang, Wei Yuan, Wenming Su, Xiuqing Meng, Xinzhou Wu, Congcong Chi, Desheng Kong, Zheng Cui

引用次数: 7

Silver nanoparticles modified on cicada wings affect fluorescence and Raman signals based on electromagnetic and chemical enhancement mechanisms 银纳米粒子修饰蝉翅，基于电磁和化学增强机制影响荧光和拉曼信号

Optics & Laser Technology Pub Date : 2024-10-05 DOI: 10.1016/j.optlastec.2024.111912

Shu Guo, Huiju Cao, Yunfan Yang, Mingli Wang

引用次数: 45

Heat dissipation enhancement of PiGF converter with vapor chamber radiator for high-brightness laser lighting 高亮度激光照明用蒸汽室辐射体PiGF变换器的散热增强

Optics & Laser Technology Pub Date : 2024-10-01 DOI: 10.1016/j.optlastec.2024.111900

Yongjie Ding, Mingxiang Chen, Zhenyu Lei, Xin Liu, Jiuzhou Zhao, Jian Xu, Xiaowei Liu, Yang Peng, Xiaowei Liu, Yang Peng

引用次数: 6

Hybrid ANN-physical model for predicting residual stress and microhardness of metallic materials after laser shock peening 用于预测激光冲击强化后金属材料残余应力和显微硬度的混合 ANN 物理模型

Optics & Laser Technology Pub Date : 2024-09-07 DOI: 10.1016/j.optlastec.2024.111750

Wang Zhao, Zhicong Pang, Chenxi Wang, Weifeng He, Xiaoqing Liang, Jingdong Song, Zhenyang Cao, Shuang Hu, Mo Lang, Sihai Luo

{"title":"Hybrid ANN-physical model for predicting residual stress and microhardness of metallic materials after laser shock peening","authors":"Wang Zhao, Zhicong Pang, Chenxi Wang, Weifeng He, Xiaoqing Liang, Jingdong Song, Zhenyang Cao, Shuang Hu, Mo Lang, Sihai Luo","doi":"10.1016/j.optlastec.2024.111750","DOIUrl":"https://doi.org/10.1016/j.optlastec.2024.111750","url":null,"abstract":"Residual stress and microhardness formed through laser shock peening (LSP) are crucial for enhancing the mechanical properties of metallic materials in industries like aerospace, automotive, and biomedical engineering. Therefore, precise and efficient assessment of microhardness and residual stress is vital for the successful implementation of LSP in industrial applications. In this paper, we propose a physics-informed machine learning (ML) model to address these assessment challenges and accurately predict the residual stress and microhardness of metallic materials after LSP. Firstly, different physical parameters are determined according to their corresponding mechanisms, and ABAQUS software is used to resolve the attenuation characteristics of shock waves induced by lasers. Subsequently, these identified physical parameters are utilized as input features for the artificial neural networks (ANN) model in order to forecast residual stress and microhardness. The predicted results reveal that our model exhibits a high level of precision in predicting microhardness (correlation coefficient of 0.99935) and residual stress (correlation coefficient of 0.99562) for a wide range of materials subjected to LSP. By comparing our physics-informed ML model with the traditional ANN models and empirical formula, its superior performance is effectively demonstrated in terms of accuracy and effectiveness (lower error and higher precision). Its superiority lies in the effective integration of ML methods’ representational capabilities with the combination of domain knowledge and physical understanding. This approach not only establishes a robust theoretical foundation for predicting these behaviors but also holds great promise for practical applications in industries that utilize LSP due to the universality for various materials.","PeriodicalId":19597,"journal":{"name":"Optics & Laser Technology","volume":"148 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142219871","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

Droplet transfer characteristics in high-power laser–MAG hybrid welding: Influence of energy parameters 高功率激光-MAG 混合焊接中的液滴传输特性：能量参数的影响

Optics & Laser Technology Pub Date : 2024-09-07 DOI: 10.1016/j.optlastec.2024.111496

Yafeng Zheng, Yuanlong An, Jia Yu, Liang Wang, Qunli Zhang, Huaxia Zhang, Rangda Wu, Jianhua Yao

{"title":"Droplet transfer characteristics in high-power laser–MAG hybrid welding: Influence of energy parameters","authors":"Yafeng Zheng, Yuanlong An, Jia Yu, Liang Wang, Qunli Zhang, Huaxia Zhang, Rangda Wu, Jianhua Yao","doi":"10.1016/j.optlastec.2024.111496","DOIUrl":"https://doi.org/10.1016/j.optlastec.2024.111496","url":null,"abstract":"High-power laser–arc hybrid welding experiments were performed on Q345 low-alloy steel with a thickness of 10 mm, and the effects of energy parameters such as laser power, arc power, laser–arc distance, and welding speed on the droplet transfer behavior were investigated using a high-speed imaging system. The distance between the position of the droplet falling into the molten pool and the keyhole was statistically analyzed to determine the effect of the change in the droplet transfer behavior on welding stability. Results revealed that a strong reactive force from metal vapor was generated as the laser power exceeded 6.5 kW, causing the droplet transfer trajectory to shift, which enhanced welding stability. The stability of the keyhole became worse when the laser power was increased to 9.5 kW. As the arc power increased from 4096 to 6860 W, the droplet transfer mode appeared as a mixed transfer mode dominated by globular droplet transfer, projected droplet transfer, and spray droplet transfer. A single-spray droplet transfer mode was discerned when the arc power exceeded 7394 W. In this regard, the increased arc power will enhance the stability of the welding process. Excessively large or small values will lead to poor welding stability, with the former attributed to the strong mutual interference between the laser and arc and the latter ascribed to the weakened attraction of the laser to the arc. Moreover, arc stability and droplet transfer frequency decreased with an increasing welding speed.","PeriodicalId":19597,"journal":{"name":"Optics & Laser Technology","volume":"57 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142219875","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

Tunable optical response of defective rGO-like carbon films studied by spectroscopic ellipsometry 通过光谱椭偏仪研究有缺陷的 rGO 类碳薄膜的可调光学响应

Optics & Laser Technology Pub Date : 2024-09-07 DOI: 10.1016/j.optlastec.2024.111739

Sudarsono, Faridawati, Endhah Purwandari, Deril Ristiani, Eri Widianto, Iman Santoso, Gatut Yudoyono, Darminto

引用次数: 0

Deep learning based speckle image super-resolution for digital image correlation measurement 基于深度学习的斑点图像超分辨率，用于数字图像相关性测量

Optics & Laser Technology Pub Date : 2024-09-07 DOI: 10.1016/j.optlastec.2024.111746

Lianpo Wang, Zhaoyang Lei

{"title":"Deep learning based speckle image super-resolution for digital image correlation measurement","authors":"Lianpo Wang, Zhaoyang Lei","doi":"10.1016/j.optlastec.2024.111746","DOIUrl":"https://doi.org/10.1016/j.optlastec.2024.111746","url":null,"abstract":"Digital image correlation (DIC) is a non-contact deformation measurement method based on speckle matching, widely used in experimental mechanics, explosive mechanics, construction measurement and other fields. However, when the DIC method uses a small resolution camera to measure large-sized objects, the resolution of speckle images will decrease. This not only leads to a decrease in the resolution of the measured deformation field, but also reduces the speckle size in the image, resulting in a decrease in measurement accuracy. To improve the resolution of the speckle image, we propose a deep learning-based speckle image super-resolution approach, named Speckle-SRGAN. Speckle-SRGAN is designed based on the high-frequency and fine texture characteristics of speckle images, and it introduces coordinate attention mechanism and global depth residual module to preserve high-frequency and fine textures. Low resolution speckle images are processed by Speckle-SRGAN to transform into high-resolution speckle images with high fidelity. Simulation and experimental results show that Speckle-SRGAN can increase the resolution of speckle image by 4 times and the speckle is smooth without loss of details. The real experiment also shows that using our method to preprocess speckle images can reduce the measurement error of traditional DIC methods by about 0.01 pixels. The code and data of this paper is released at: SpeckleSRGAN.","PeriodicalId":19597,"journal":{"name":"Optics & Laser Technology","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142219870","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

Influence of laser mode on size effect in manufacturing AlSi10Mg mini-structures by laser powder bed fusion technology 利用激光粉末床熔融技术制造 AlSi10Mg 微型结构时激光模式对尺寸效应的影响

Optics & Laser Technology Pub Date : 2024-09-07 DOI: 10.1016/j.optlastec.2024.111748

Zhaomeng Rui, Jia Liu, Yan Shi

{"title":"Influence of laser mode on size effect in manufacturing AlSi10Mg mini-structures by laser powder bed fusion technology","authors":"Zhaomeng Rui, Jia Liu, Yan Shi","doi":"10.1016/j.optlastec.2024.111748","DOIUrl":"https://doi.org/10.1016/j.optlastec.2024.111748","url":null,"abstract":"The mechanical properties of lightweight mini-truss structures manufactured by laser powder bed fusion (L-PBF) technology deviate widely from design targets. To investigate the causes and solutions of the above problems, the pillar diameter threshold that does not generate thermal accumulation under different laser modes was calculated by numerical simulation in this paper, which reveals the generation mechanism of thermal accumulation in the melting process of columnar samples. The effects of pillar diameter and laser mode on the microstructure and mechanical properties of AlSi10Mg prepared by L-PBF were also investigated experimentally. The experimental and simulation results show that in the continuous wave (CW) laser mode, as the diameter decreases, the solidification rate of the molten pool decreases, the size of the heat affected zone (HAZ) increases, and the ultimate tensile strength (UTS) and elongation after fracture (EL) decrease significantly. The microstructure of the submillimeter struts can be well modulated using a pulsed wave (PW) laser, and the sample strength can be increased by 12 %. The EL of the tensile samples in this study depended on the diameter of the sample, and there was no significant correlation with the laser mode. The experimental results regulate the size effect in additive manufacturing and improve the mechanical properties of metal mini-truss structures.","PeriodicalId":19597,"journal":{"name":"Optics & Laser Technology","volume":"27 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142219869","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