Journal of Russian Laser Research最新文献_第4页

Numerical Simulation and Experimental Study of Nanosecond Pulsed Laser Cleaning of Aluminum Alloy Surface Paint Layer 铝合金表面漆层的纳秒脉冲激光清洗数值模拟与实验研究

IF 0.7 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2024-03-15 DOI: 10.1007/s10946-024-10193-7

Tanghao Wang, Shanman Lu, Hanqi Liu, Jun Ying, Wei Zhang

{"title":"Numerical Simulation and Experimental Study of Nanosecond Pulsed Laser Cleaning of Aluminum Alloy Surface Paint Layer","authors":"Tanghao Wang, Shanman Lu, Hanqi Liu, Jun Ying, Wei Zhang","doi":"10.1007/s10946-024-10193-7","DOIUrl":"10.1007/s10946-024-10193-7","url":null,"abstract":"<div><p>In this paper, we present a finite element model that utilizes simulation software to simulate the process of moving nanosecond pulsed laser cleaning on the surface paint layer of 2A12 Aluminum alloy. The objective is to analyze the impact of different laser parameters on the distribution of temperature field within both the paint layer and the substrate surface. Furthermore, we perform experimental validation to verify the findings. The results assume that both laser power and scanning speed influence the outcomes of the cleaning process. At a constant scanning speed, the maximum temperature of both the paint surface and the substrate surface linearly increases with rising laser power. In contrast, at a fixed laser power, the scanning speed influences cleaning outcomes through spot overlap, and the surface temperature of the paint layer rises as the scanning speed decreases. The optimum cleaning effect, with a surface roughness (Ra) of 1.0139 μm, is achieved at a scanning speed of 2500 mm/s and a laser power of 30 W. The surface roughness exhibits first a decrease and then increase pattern with rising laser power. These findings offer valuable insights into process parameters for nanosecond pulsed laser cleaning of surface paint layers on Aluminum alloy.</p></div>","PeriodicalId":663,"journal":{"name":"Journal of Russian Laser Research","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140147669","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 Pulse Generation in the C-Band Region Using Silver Sulfide as a Saturable Absorber 利用硫化银作为饱和吸收体在 C 波段区域产生纳秒脉冲

IF 0.7 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2024-03-15 DOI: 10.1007/s10946-024-10188-4

Norizan Ahmed, Nur Farhanah Zulkipli, Nurhaffizah Hassan, Rosmawati Shafie, Syazilawati Mohamed

引用次数: 0

Generation of Dual-Wavelength Optical Domain–Wall Dark–Bright Pulses by Composite Filtering Effects 利用复合滤波效应生成双波长光域壁暗-亮脉冲

IF 0.7 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2024-03-15 DOI: 10.1007/s10946-024-10187-5

Qingyu Chang

引用次数: 0

Research on Ghost Imaging Method Based on Binocular Vision Matching Fusion 基于双目视觉匹配融合的幽灵成像方法研究

IF 0.7 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2024-03-15 DOI: 10.1007/s10946-024-10192-8

Hualong Ye, Daidou Guo, Tongxu Xu

引用次数: 0

Corrosion Performance of Graphene-Strengthened CoCrFeNiMo0.2 High-Entropy Alloy in Simulated Acid Rain Prepared by Laser Cladding 激光熔覆法制备的石墨烯强化 CoCrFeNiMo0.2 高熵合金在模拟酸雨中的腐蚀性能

IF 0.7 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2024-03-15 DOI: 10.1007/s10946-024-10194-6

Xingwu Qiu

{"title":"Corrosion Performance of Graphene-Strengthened CoCrFeNiMo0.2 High-Entropy Alloy in Simulated Acid Rain Prepared by Laser Cladding","authors":"Xingwu Qiu","doi":"10.1007/s10946-024-10194-6","DOIUrl":"10.1007/s10946-024-10194-6","url":null,"abstract":"<div><p>We study the graphene (Gr)-strengthened CoCrFeNiMo<sub>0<i>.</i>2</sub> high-entropy alloys (HEAs) prepared by laser cladding. The corrosion properties of the alloys under simulated acid rain conditions are studied through rainfall experiments, electrochemical experiments, and immersion experiments. The experimental results show that the microstructure of the Gr-strengthened CoCrFeNiMo<sub>0<i>.</i>2</sub> HEAs mainly including three morphologies. Mo element occurs segregation. Gr concentrates on the alloy surface during melting. The alloy has a face centered cubic (FCC) single-phase structure. With increase in the rainfall and immersion period, the corrosion resistance of the Gr-strengthened HEAs decreases. With increase in the pH, the corrosion resistance of the alloys increase. The corrosion current densities of Gr-strengthened CoCrFeNiMo<sub>0<i>.</i>2</sub> HEAs are small, indicating that the alloys have excellent corrosion resistance. Electrochemical impedance spectroscopy (EIS) shows that as the pH increases, the capacitance arc radius, impedance modulus, and phase angle show increasing trend. The reason for excellent corrosion resistance are as follows: the Gr enriched on the surface plays a shielding role during alloy melting, Gr reacts with alloy elements to form a passive film on the alloy surface, the lattice distortion and grain refinement are caused by Gr, providing the single-phase structure of the alloy.</p></div>","PeriodicalId":663,"journal":{"name":"Journal of Russian Laser Research","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140147697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Research on a Broadband Compact Polarization Beam Splitter 宽带紧凑型偏振光分束器研究

IF 0.7 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2024-03-15 DOI: 10.1007/s10946-024-10190-w

Zhibin Wang, Xuwei Hou, Zhengyang Li, Jiutian Zhang

引用次数: 0

Nonlinear Optical Properties of Plasmon–Exciton Nanostructures Based on PbS Quantum Dots and Gold Nanorods in the Field of Nanosecond Laser Pulses 纳秒激光脉冲下基于 PbS 量子点和金纳米棒的等离子体-激发子纳米结构的非线性光学特性

IF 0.7 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2024-03-14 DOI: 10.1007/s10946-024-10191-9

A. I. Zvyagin, T. A. Chevychelova, K. S. Chirkov, M. S. Smirnov, O. V. Ovchinnikov, E. P. Denisova

引用次数: 0

Temperature Dependence of the Linewidths and Amplitudes of the Sub-Doppler Resonances of 87Rb D2 Line Detected with σ(σ)-Polarized Pumping and Probe Laser Beams 用σ(σ)偏振泵浦激光束和探针激光束探测到的 87Rb D2 线的线宽和亚多普勒共振振幅的温度依赖性

IF 0.7 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2024-03-11 DOI: 10.1007/s10946-024-10185-7

Ersoy Şahin

引用次数: 0

Population Distribution and Splitting Nonlinearity for Rydberg Atomic Gas under Multiple Fields 多重场下雷德贝格原子气体的种群分布和分裂非线性

IF 0.7 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2024-03-11 DOI: 10.1007/s10946-024-10184-8

Chao Li, Guo Ma, Yunyun Zhang, Shengzhao Wang

{"title":"Population Distribution and Splitting Nonlinearity for Rydberg Atomic Gas under Multiple Fields","authors":"Chao Li, Guo Ma, Yunyun Zhang, Shengzhao Wang","doi":"10.1007/s10946-024-10184-8","DOIUrl":"10.1007/s10946-024-10184-8","url":null,"abstract":"<div><p>Rydberg atom has a very large polarizability proportional to n<sup>7</sup> (<i>n</i> is the principal quantum number), the energy interval between adjacent energy levels is in the microwave frequency band, and the transition between adjacent energy levels has a huge dipole moment proportional to <i>n</i><sup>4</sup>; as a result, the Rydberg atom is extremely sensitive to the external field, making it an important means of microwave detection. The interaction of Rydberg atoms with laser fields can be described within the framework of density matrix theory. In this paper, based on a four-level system with multiple laser fields, we study the relationship between the population distribution of different energy levels and the detuning of the coupling field, as well as the effect of the Rabi frequency of microwave field on the electromagnetically induced transparency (EIT) signal by solving the density matrix of the steady state system. Considering the characteristics of density matrix, we assume that the diagonal elements are real and the off-diagonal elements are complex. We find that the operation efficiency of this construction method is twice as high as that of the direct representation by complex numbers. At the same time, we obtain that the Rabi frequency of microwave electric field is proportional to the splitting of EIT signal within a certain range.</p></div>","PeriodicalId":663,"journal":{"name":"Journal of Russian Laser Research","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140097419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

The Physical Transient Spectrum and Squeezing of a Three-Level Atom Interacting with Two-Mode Field in Finite Pair Coherent State in the Presence of a Classical External Field 在经典外场存在的有限对相干态中与双模场相互作用的三阶原子的物理瞬态频谱和挤压

IF 0.7 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2024-03-08 DOI: 10.1007/s10946-024-10183-9

A.-S. F. Obada, E. M. Khalil, S. Sanad, H. F. Habeba

{"title":"The Physical Transient Spectrum and Squeezing of a Three-Level Atom Interacting with Two-Mode Field in Finite Pair Coherent State in the Presence of a Classical External Field","authors":"A.-S. F. Obada, E. M. Khalil, S. Sanad, H. F. Habeba","doi":"10.1007/s10946-024-10183-9","DOIUrl":"10.1007/s10946-024-10183-9","url":null,"abstract":"<div><p>We investigate effects of a classical external field and the initial state of the field on the nonlinear interaction of a Λ-type three-level atom with the two-mode field through the Raman type interaction. Appropriate canonical transforms are performed for atomic states. The analytic solution to the model is obtained, using the Schrödinger differential equation. The wave function is obtained under specific initial conditions of the atom and field. The effect of a classical external field and the initial state of the field on the population occupations, the squeezing phenomenon, and the atomic emission spectrum are studied. The collapse–revival phenomena are affected by the presence of the classical field. Increasing the activation of the role of the initial state of the field improves the phenomena of collapses and revivals. The squeezing intervals decrease with increase in the classical field effect. The squeezing intervals increase with decrease of the parameter of the initial state of the field. The maximum values of the emission spectrum are improved after taking into account the classical field. In addition, the peaks significantly decrease after reducing the influence of both the bandwidth of the filter and the interaction time.</p></div>","PeriodicalId":663,"journal":{"name":"Journal of Russian Laser Research","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140074756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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