Optics and Laser Technology最新文献_第4页

Experimental, statistical and numerical study of the single laser spot condition and influence parameters of a Neodymium-Doped Yttrium Lithium Fluoride laser 掺钕钇氟化锂激光器单激光光斑条件及影响参数的实验、统计和数值研究

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-05-15 DOI: 10.1016/j.optlastec.2025.113202

Mohammad Rezayat , Mojtaba Karamimoghadam , Alexandra Morvayová , Nicola Contuzzi , Giuseppe Casalino , Antonio Mateo

{"title":"Experimental, statistical and numerical study of the single laser spot condition and influence parameters of a Neodymium-Doped Yttrium Lithium Fluoride laser","authors":"Mohammad Rezayat , Mojtaba Karamimoghadam , Alexandra Morvayová , Nicola Contuzzi , Giuseppe Casalino , Antonio Mateo","doi":"10.1016/j.optlastec.2025.113202","DOIUrl":"10.1016/j.optlastec.2025.113202","url":null,"abstract":"<div><div>This study investigates the influence of key laser processing parameters—namely laser power and pass number—on AISI 301LN stainless steel, utilizing a Neodymium-Doped Yttrium Lithium Fluoride (Nd) laser. Employing a Design of Experiments (DOE) approach coupled with Finite Element Analysis (FEA), the research examines single-spot laser effects on surface morphology, with specific focus on spot width, depth, and roughness. Through systematic experimentation, ANOVA, and response surface methodology, significant findings reveal that pass number is a dominant factor affecting spot width and depth, while laser power subtly impacts roughness. The study provides regression models for predictive analysis, enabling parameter optimization to achieve precise microstructural changes. Complementary simulations further illustrate thermal distribution, ablation effects, and fluid dynamics in the laser-affected zone. Results support tailored laser parameters selection to improve surface integrity and performance, positioning this approach as valuable for precision applications in advanced materials processing.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"190 ","pages":"Article 113202"},"PeriodicalIF":4.6,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143948297","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 photon imaging based on beam manipulation 基于光束操纵的单光子成像

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-05-15 DOI: 10.1016/j.optlastec.2025.113080

Zeyu Guo , Zhen Chen , Yongqi Yang , Yun Jiang , Hao Yi , Huachuang Wang , Bo Liu , Enhai Liu

{"title":"Single photon imaging based on beam manipulation","authors":"Zeyu Guo , Zhen Chen , Yongqi Yang , Yun Jiang , Hao Yi , Huachuang Wang , Bo Liu , Enhai Liu","doi":"10.1016/j.optlastec.2025.113080","DOIUrl":"10.1016/j.optlastec.2025.113080","url":null,"abstract":"<div><div>The array-based single-photon light detection and ranging (LiDAR) not only offers exceptional detection sensitivity, but also enables simultaneous acquisition of distance information from multiple pixels, significantly improving the speed of three-dimensional (3D) imaging. Unfortunately, the working distance is limited by flood illumination in the array-based single-photon LiDAR systems. In order to improve the detection capability of long-range targets and achieve fast 3D imaging of close-range targets simultaneously, a single photon imaging method based on beam manipulation is proposed in this paper. With the beam manipulation technique, the divergence angle is adaptively adjusted by a motorised beam expander according to the signal-to-noise ratio (SNR), which enhances fast and long-range 3D imaging. A compact array-based single-photon LiDAR system is established, and the experimental results show that fast 3D imaging of close-range targets (at a distance of 7.7 km) can be achieved in an urban environment. Furthermore, the working distance of small targets with weak echoes reaches up to 16.5 km.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"190 ","pages":"Article 113080"},"PeriodicalIF":4.6,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143948298","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

Generating broadband tunable visible lasers via SPM-SFG in RECOB crystals 在RECOB晶体中利用SPM-SFG产生宽带可调谐可见激光器

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-05-15 DOI: 10.1016/j.optlastec.2025.113078

Xuezhi Zhao , Zhixin Wu , Zhengping Wang , Xinguang Xu

引用次数: 0

FoggyFuse: Infrared and visible image fusion method based on saturation line prior in foggy conditions FoggyFuse：雾天条件下基于饱和度线先验的红外和可见光图像融合方法

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-05-15 DOI: 10.1016/j.optlastec.2025.113075

Shengkun Wu , Hao Li , Lei Deng , Heng Yu , Hanrui Chen , Zhixiang Chen , Mingli Dong , Lianqing Zhu

{"title":"FoggyFuse: Infrared and visible image fusion method based on saturation line prior in foggy conditions","authors":"Shengkun Wu , Hao Li , Lei Deng , Heng Yu , Hanrui Chen , Zhixiang Chen , Mingli Dong , Lianqing Zhu","doi":"10.1016/j.optlastec.2025.113075","DOIUrl":"10.1016/j.optlastec.2025.113075","url":null,"abstract":"<div><div>Infrared and visible image fusion is widely used to enhance image details and information. However, in foggy environments or military smoke bomb scenarios, the scattering and absorption of light significantly degrade the quality of both infrared and visible images, leading to poor fusion performance. Existing fusion methods struggle to effectively restore degraded image details, making them unsuitable for practical applications in such adverse conditions. To address this challenge, we propose a novel fusion architecture based on the saturation line prior (SLP). This method consists of three main modules: the Dehazing Module (DM), the Auxiliary Enhancement Module (AEM), and the Edge Enhancement Module (EEM). The DM optimizes SLP using weighted guided filtering to obtain refined transmission maps for visible images, which are then used to further enhance the infrared image. The AEM and EEM, combined with a non-subsampled shearlet transform (NSST), further process the enhanced visible and infrared images. This approach effectively restores intricate details and achieves natural color reproduction in hazy environments, significantly improving the visual quality of fused images. Given the limited research in this area and the absence of relevant datasets, we constructed an infrared and visible image pair dataset, Foggy, specifically designed for foggy conditions. Qualitative and quantitative evaluations demonstrate that the proposed method outperforms state-of-the-art fusion techniques on the Foggy dataset.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"190 ","pages":"Article 113075"},"PeriodicalIF":4.6,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143948299","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

Negative differential resistance in InP/AlGaInAs laser diodes under continuous current stress 连续电流应力下InP/AlGaInAs激光二极管的负差分电阻

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-05-15 DOI: 10.1016/j.optlastec.2025.113196

Zhengqun Xue , Bingkun Chi , Yuping Chen

引用次数: 0

Mode-locked fiber laser with an embedded Sagnac interference filter for strain sensing 带嵌入式Sagnac干涉滤波器的锁模光纤激光器，用于应变传感

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-05-15 DOI: 10.1016/j.optlastec.2025.113161

Chen Jiang , Zhiqiang Wang , Ying Wan , Sheng Zhang , Ling Yun , Bing Sun , Chengbo Mou , Yunqi Liu , Zuxing Zhang

{"title":"Mode-locked fiber laser with an embedded Sagnac interference filter for strain sensing","authors":"Chen Jiang , Zhiqiang Wang , Ying Wan , Sheng Zhang , Ling Yun , Bing Sun , Chengbo Mou , Yunqi Liu , Zuxing Zhang","doi":"10.1016/j.optlastec.2025.113161","DOIUrl":"10.1016/j.optlastec.2025.113161","url":null,"abstract":"<div><div>We demonstrate a saturable absorber-based mode-locked fiber laser with an embedded Sagnac interference filter for strain sensing. By selecting an appropriate birefringent fiber length in the loop, the interferometer exhibits two dips within the wavelength ranges of the amplified spontaneous emission spectrum, functioning as a bandpass filter for wavelength selection. Mode-locked pulses at the central wavelength of the bandpass filter can self-start by increasing the pump power. The laser-based axial strain sensing system retains the high sensitivity of a Sagnac interferometer while overcoming demodulation challenges caused by peak tracking of the interferometer spectrum. Strain sensing was achieved by monitoring the optical spectrum and radio frequency (RF) spectrum of the mode-locked pulses. Within a strain variation range of 0–1045 <span><math><mtext>μ</mtext><mi>ϵ</mi></math></span>, the wavelength shift sensitivity reached 21 pm/<span><math><mtext>μ</mtext><mi>ϵ</mi></math></span>. As strain increased, cavity length expansion resulted in a fundamental frequency RF spectrum shift sensitivity of <span><math><mo>−</mo></math></span>0.767 Hz/<span><math><mtext>μ</mtext><mi>ϵ</mi></math></span>. The proposed system provides multiple types of strain demodulation options, and its compact structure holds the potential for structural health monitoring of bridges, pipelines, aviation materials, etc.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"190 ","pages":"Article 113161"},"PeriodicalIF":4.6,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143948300","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

Wavelength-chirality demultiplexer of nondiffracting Bessel surface plasmon polariton beam based on hexagonal star nanostructure 基于六角星纳米结构的无衍射贝塞尔表面等离子体激元光束波长手性解复用器

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-05-15 DOI: 10.1016/j.optlastec.2025.113187

Xinru An , Peng Lang , Boyu Ji , Xuefeng Shi , Feng Lin , Yihe Lin , Yang Xu , Xiaowei Song , Jingquan Lin

{"title":"Wavelength-chirality demultiplexer of nondiffracting Bessel surface plasmon polariton beam based on hexagonal star nanostructure","authors":"Xinru An , Peng Lang , Boyu Ji , Xuefeng Shi , Feng Lin , Yihe Lin , Yang Xu , Xiaowei Song , Jingquan Lin","doi":"10.1016/j.optlastec.2025.113187","DOIUrl":"10.1016/j.optlastec.2025.113187","url":null,"abstract":"<div><div>Nondiffracting Bessel surface plasmon polariton (SPP) beams have unique self-healing, nondivergence, and linear transmission properties, which can effectively suppress the diffraction of the beam and improve the capacity of resisting disturbance, exhibiting wide applications in plasmonic devices and on-chip interconnection circuits. Here, we propose a plasmonic device for the selective excitation of six-channel nondiffracting SPP beam utilizing both wavelength and chirality demultiplexing techniques. This device is capable of coupling and directing circularly polarized light with three different wavelengths and chirality into nondiffracting Bessel SPP beam with six different propagation paths, greatly enhancing the freedom of information transmission in the on-chip interconnect circuit. Meanwhile, the multi-channel selective excitation function of the device is experimentally verified by scanning near-field optical microscopy (SNOM). This work provides a new strategy for the development of demultiplex SPP devices and a great prospect for applications such as on-chip interconnect circuits.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"190 ","pages":"Article 113187"},"PeriodicalIF":4.6,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143948314","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

Process parameter optimization of laser welding for dissimilar aluminum alloys 4047 and 6061 using response surface methodology: Microstructure and mechanical properties 基于响应面法的异种铝合金4047和6061激光焊接工艺参数优化：组织与力学性能

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-05-15 DOI: 10.1016/j.optlastec.2025.113198

Shangen Qi , Chen Wang , Ying Liu , Aiping Liu , Ziwei Bai , Zhenzhen Peng , Zhimin Liang , Balaji Narayanaswamy , Liwei Wang , Dianlong Wang

{"title":"Process parameter optimization of laser welding for dissimilar aluminum alloys 4047 and 6061 using response surface methodology: Microstructure and mechanical properties","authors":"Shangen Qi , Chen Wang , Ying Liu , Aiping Liu , Ziwei Bai , Zhenzhen Peng , Zhimin Liang , Balaji Narayanaswamy , Liwei Wang , Dianlong Wang","doi":"10.1016/j.optlastec.2025.113198","DOIUrl":"10.1016/j.optlastec.2025.113198","url":null,"abstract":"<div><div>In this study, continuous fiber laser was used to butt weld 2 mm thick 4047 and 6061 dissimilar aluminum alloys, and the optimization of welding parameters, microstructure and mechanical properties of the joint were studied. The Box-Behnken Design (BBD) response surface test design method was used to optimize three main process parameters: laser power, welding speed and defocusing amount. The optimal process parameter combination was determined as follows: laser power 800 W, welding speed 17.5 mm/s, defocusing amount 0 mm. The accuracy of the prediction model of back-width ratio and effective area under this parameter is as high as 97 % compared with the reality. The welded joint with good weld shape and no defects was obtained. The microstructure of the weld is mainly composed of α-Al matrix and Al-Si eutectic structure, the center of the weld is equiaxed crystal structure, and the near melting zone is columnar dendrite. The main alloy elements of the weld are Al, Si, Mg and Fe, and there is no obvious element segregation. The longitudinal local tensile results show that the tensile strength of the weld metal reaches 260.45 MPa, which is 202.6 % and 83.3 % of the 4047 base metal and 6061 base metal respectively. The elongation is 12.25 %, which is 43.9 % and 98.2 % of 4047 and 6061 base materials, respectively. The above research provides a reference for the connection and application of 4047/6061 dissimilar aluminum alloy.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"190 ","pages":"Article 113198"},"PeriodicalIF":4.6,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143948315","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

Evaluation method of camouflage effect based on image feature similarity/fusion degree

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-05-12 DOI: 10.1016/j.optlastec.2025.113152

Yongzhi Li , Chunyang Jia , Jianing Lv , Xiaolong Qing , Wei Duan , Jianguo Zhang , Xiaolong Weng

{"title":"Evaluation method of camouflage effect based on image feature similarity/fusion degree","authors":"Yongzhi Li , Chunyang Jia , Jianing Lv , Xiaolong Qing , Wei Duan , Jianguo Zhang , Xiaolong Weng","doi":"10.1016/j.optlastec.2025.113152","DOIUrl":"10.1016/j.optlastec.2025.113152","url":null,"abstract":"<div><div>The evaluation of camouflage effectiveness is crucial for validating and optimizing camouflage strategies. However, most evaluation approaches based on image features ignore the impact of locational information and the data normalization method on the results. In this study, brightness, color, and texture features are selected as evaluation indices according to the principles of visual perception characteristics and camouflage index selection, and a novel camouflage evaluation method based on image feature similarity/blending is proposed. This method fully considers the spatial location and statistical properties of pixels. Further, a weighted Euclidean metric is introduced to achieve comprehensive camouflage effect evaluation by calculating the brightness, color similarity, and texture integration between the target and the environment. A Sigmoid function normalizes the calculation results. The observer experiment verifies the method, demonstrating that its results align with human visual judgments, thereby proving its scientific rationality.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"189 ","pages":"Article 113152"},"PeriodicalIF":4.6,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943289","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

Locally excited surface plasmon polaritons (SPPs) induced scanning near-field optical lithography on Ag nano-film

IF 4.6 2区物理与天体物理

Optics and Laser Technology Pub Date : 2025-05-12 DOI: 10.1016/j.optlastec.2025.113122

Xuewen Wang , Xuesong Mei , Hailong Yin , Zhijun Wang , Xiaoqiao He , Jianlei Cui

{"title":"Locally excited surface plasmon polaritons (SPPs) induced scanning near-field optical lithography on Ag nano-film","authors":"Xuewen Wang , Xuesong Mei , Hailong Yin , Zhijun Wang , Xiaoqiao He , Jianlei Cui","doi":"10.1016/j.optlastec.2025.113122","DOIUrl":"10.1016/j.optlastec.2025.113122","url":null,"abstract":"<div><div>Scanning near-field optical lithography (SNOL) has been considered an outstanding technique for sub-diffraction-limit nanofabrication since the advantages of low-cost and stability. Here, we report the SNOL on Ag nano-film to generate high-accuracy groove and pattern features controllably, using a cantilevered scanning near-field optical microscopy (SNOM) tip and nanosecond laser. The morphology and element analysis of fabricated features indicate that the melting and reshaping of the surface materials are the mechanism of SNOL on Ag nano-film. The electromagnetic filed and thermal field distributions are calculated via a multi-physics model by finite element method (FEM). The simulation reveals that the locally excited surface plasmon polaritons (SPPs) induce the near-field enhancement of light field and produce elliptical hot spot confined in the tip aperture. Single pulse energy and polarization of the incident laser are demonstrated to be essential parameters in lithography. The theoretical influential mechanism of these parameters to the feature width is consistent with experimental results. Due to the hot spot effect with extremely small range and high instantaneous energy underneath the tip aperture, this technology has immense potential in nanostructure processing and nano-welding in the future.</div></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":"189 ","pages":"Article 113122"},"PeriodicalIF":4.6,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943390","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