Journal of Russian Laser Research最新文献

Propagation Properties of Partially Coherent Vortex Beams with Twist Phase in Oceanic Turbulence 海洋湍流中具有扭曲相位的部分相干涡束的传播特性

IF 0.7 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2024-08-12 DOI: 10.1007/s10946-024-10219-0

NianChi Hao, Yonggen Xu, Qian Xu, Wenli Liu, Bangzhuo An, Xueru Deng, Zairu Ma

{"title":"Propagation Properties of Partially Coherent Vortex Beams with Twist Phase in Oceanic Turbulence","authors":"NianChi Hao, Yonggen Xu, Qian Xu, Wenli Liu, Bangzhuo An, Xueru Deng, Zairu Ma","doi":"10.1007/s10946-024-10219-0","DOIUrl":"10.1007/s10946-024-10219-0","url":null,"abstract":"<div><p>We derive the analytical expressions of the average intensity of a partially coherent twisted Laguerre– Gaussian vortex (PCTLGV) beam passing through oceanic turbulence with the help of the extended Huygens–Fresnel principle. The findings show that the normalized initial profile with a dark hollow distribution of PCTLGV beam gradually converts into a flat-topped one, and finally degenerates into a Gaussian-like distribution as the propagation distance increases. The outcomes also reveal that the effect of oceanic turbulence on the propagation properties of PCTLGV beam can be effectively mitigated by regulating the twist factor and topological charge. We also find that PCTLGV beam exhibits stronger anti-turbulence ability, when the topological charge and twist factor have opposite signs as well as larger absolute values of twist factor. In addition, the PCTLGV beam will degenerate fast in stronger turbulence over the poor turbulence, which can be counteracted by increasing the initial coherence lengths. Our researches can contribute to underwater communication transmission, oceanic laser radar detection, and optical imaging.</p></div>","PeriodicalId":663,"journal":{"name":"Journal of Russian Laser Research","volume":"45 3","pages":"332 - 342"},"PeriodicalIF":0.7,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141933127","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

Real-Time Monitoring of Laser-Layered Paint Removal from CFRP Based on the Synergy of Laser-Induced Breakdown Spectroscopy and PLS-DA Models 基于激光诱导击穿光谱和 PLS-DA 模型协同作用的 CFRP 激光分层脱漆实时监测系统

IF 0.7 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2024-08-12 DOI: 10.1007/s10946-024-10221-6

Ying Zhao, Xiaoyong Zhuo, Yanqun Tong, Jianyu Huang, Shuai Wang, Wangfan Zhou, Liang Chen, Yu Chen, Wen Shi

{"title":"Real-Time Monitoring of Laser-Layered Paint Removal from CFRP Based on the Synergy of Laser-Induced Breakdown Spectroscopy and PLS-DA Models","authors":"Ying Zhao, Xiaoyong Zhuo, Yanqun Tong, Jianyu Huang, Shuai Wang, Wangfan Zhou, Liang Chen, Yu Chen, Wen Shi","doi":"10.1007/s10946-024-10221-6","DOIUrl":"10.1007/s10946-024-10221-6","url":null,"abstract":"<div><p>To achieve precise removal of different coatings from carbon fiber-reinforced polymer (CFRP), we propose real-time monitoring for laser-layered paint removal. Current methods for laser paint removal on CFRP surfaces primarily focus on temperature control to safeguard the CFRP against potential damage, yet encounter challenges in providing real-time monitoring capabilities. In this study, we present laser-induced breakdown spectroscopy (LIBS) combined with partial least-squares discriminant analysis (PLS-DA) models as a promising approach. Initially, in this study, we analyze the elemental composition of carbon fiber substrates, primer, and topcoat to identify key characteristic elements for evaluating the laser-layered paint removal effectiveness. Subsequently, we explore changes in the intensities of characteristic spectral lines associated with the characteristic elements in different layers. Lastly, we develop PLS-DA models to effectively identify and classify the carbon fiber substrates, primer, and topcoat, enabling real-time monitoring of laser-layered paint removal. Based on the measured LIBS characteristic intensities and PLS-DA models, we accurately identified materials using Al I (396.164 nm) and Cr I (428.984 nm), or exclusively Cr I (428.984 nm), with 100% accuracy. The results demonstrate the feasibility of integrating LIBS with PLS-DA for monitoring laser-layered paint removal and show its potential in high-quality surface cleaning and automation.</p></div>","PeriodicalId":663,"journal":{"name":"Journal of Russian Laser Research","volume":"45 3","pages":"354 - 364"},"PeriodicalIF":0.7,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141933126","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

Wavelength Switchable Thulium-Doped Fiber Laser Based on Fiber-Core Mismatched Mach–Zehnder Filter 基于纤芯失配马赫-泽恩德滤波器的波长可切换掺铥光纤激光器

IF 0.7 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2024-08-12 DOI: 10.1007/s10946-024-10215-4

Wei Wei, Junfa Duan, Yunbo Yang, Gaolin Qin

引用次数: 0

Nanocrystalline Diamond Films Grown in CH4-H2-GeH4-N2 Gas Mixtures: Structure and Luminescent Characteristics 在 CH4-H2-GeH4-N2 混合气体中生长的纳米晶钻石薄膜：结构和发光特性

IF 0.7 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2024-08-12 DOI: 10.1007/s10946-024-10222-5

Artem Martyanov, Ivan Tiazhelov, Sergey Savin, Vadim Sedov

{"title":"Nanocrystalline Diamond Films Grown in CH4-H2-GeH4-N2 Gas Mixtures: Structure and Luminescent Characteristics","authors":"Artem Martyanov, Ivan Tiazhelov, Sergey Savin, Vadim Sedov","doi":"10.1007/s10946-024-10222-5","DOIUrl":"10.1007/s10946-024-10222-5","url":null,"abstract":"<div><p>The chemical vapor deposition (CVD) of diamond allows the controllable formation of the material with desirable structure and elemental composition. In this study, Ge-doped microcrystalline and nanocrystalline diamond (NCD) films are synthesized using microwave plasma-assisted CVD in CH<sub>4</sub>-H<sub>2</sub>-GeH<sub>4</sub>-N<sub>2</sub> gas mixtures. We grow series of 2 μm thick NCD films with variations in gas composition [N<sub>2</sub>] = 0 <i>−</i> 4% and [CH<sub>4</sub>] = 10 <i>−</i> 15%. We investigate and compare the structure, phase composition, and luminescent characteristics of the grown films. The luminescent signals from Silicon vacancy (SiV, 738 nm) and Germanium vacancy (GeV, 602 nm) color centers in diamond are registered. The additional annealing of the as-grown films in air is used to remove the excessive sp<sup>2</sup> phase that hinders their luminescent properties. For both SiV and GeV centers, we find conditions for CVD growth of NCD films that are as bright or even brighter than Si-doped and Ge-doped high-quality microcrystalline diamond films (MCD) grown without N<sub>2</sub> additions. These results may be used for the fabrication of NCD films and plates with high concentrations of SiV and GeV centers, which may serve as source material for the fabrication of sub-micrometer-sized luminescent diamond particles for local optical thermometry.</p></div>","PeriodicalId":663,"journal":{"name":"Journal of Russian Laser Research","volume":"45 3","pages":"365 - 372"},"PeriodicalIF":0.7,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141933128","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

Multi-Wavelength Passively Q-Switched Fiber Laser Based on Erbium-Doped Fiber Saturable Absorber and Analysis of Gain Saturable Absorption Characteristics 基于掺铒光纤可饱和吸收体的多波长无源 Q 开关光纤激光器及增益可饱和吸收特性分析

IF 0.7 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2024-08-12 DOI: 10.1007/s10946-024-10216-3

Honggang Pan, Rupeng Li, Chunqi Chen, Zhipan Chen, Bo Zhang, Zihong Zhao

{"title":"Multi-Wavelength Passively Q-Switched Fiber Laser Based on Erbium-Doped Fiber Saturable Absorber and Analysis of Gain Saturable Absorption Characteristics","authors":"Honggang Pan, Rupeng Li, Chunqi Chen, Zhipan Chen, Bo Zhang, Zihong Zhao","doi":"10.1007/s10946-024-10216-3","DOIUrl":"10.1007/s10946-024-10216-3","url":null,"abstract":"<div><p>In this paper, we report a multi-wavelength passively <i>Q</i>-switched fiber laser based on reconfigurable Lyot ring filter (RLRF) and Erbium-doped fiber (EDF) saturable absorber (SA). The gain saturable absorption characteristics of the EDF are analyzed in the experiments. When EDF is used as SA, EDF exhibits different nonlinear characteristics at different pump powers. Through the observation of the experimental data, we discuss the relationship between the multi-wavelength and passively <i>Q</i>switching, in view of the position of the wavelength excitations and the presence or absence of the corresponding pulse sequence. The RLRF in the structure uses a 2 m long polarization maintaining fiber (PMF), and the wavelength interval between 1.5 and 3.0 nm can be effectively switched by adjusting the polarization controller (PC). The laser elaborated can flexibly switch from a single to seven wavelengths, with a corresponding pulse repetition rates of 24.11 – 59.38 kHz, a minimum <i>Q</i>switched pulse width of 1.16 μs, a maximum average output power of 46.98 μW, and a maximum single pulse energy of 9.64 nJ.</p></div>","PeriodicalId":663,"journal":{"name":"Journal of Russian Laser Research","volume":"45 3","pages":"308 - 318"},"PeriodicalIF":0.7,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141968935","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

Low-Order Aberration Suppression on Primary Mirror of the Togs for Satellite Downlink 用于卫星下行链路的 Togs 主镜低阶像差抑制技术

IF 0.7 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2024-08-12 DOI: 10.1007/s10946-024-10220-7

Ming Liu, Hongwei Zhao, Guanyu Wen, Xiaolin Li, Chengwei Zhu

{"title":"Low-Order Aberration Suppression on Primary Mirror of the Togs for Satellite Downlink","authors":"Ming Liu, Hongwei Zhao, Guanyu Wen, Xiaolin Li, Chengwei Zhu","doi":"10.1007/s10946-024-10220-7","DOIUrl":"10.1007/s10946-024-10220-7","url":null,"abstract":"<div><p>There is a growing interest in the development of transportable optical ground station (TOGS) as an important component of laser communication network. The object of this paper is a TOGS designed for optical LEO satellite downlink as well as for long-distance aircraft downlink. A composite gravity compensation mount is proposed to simplify and efficiently suppress the low-order aberrations of an 800 mm aperture primary mirror with variable orientation of the optical antenna of a TOGS as it changes pointing. In this study, first we describe the composition of the TOGS and the utility of each part. Second, taking the minimization of the primary mirror deformation as the optimization objective, we employ the particle swarm optimization algorithm to find the optima of several key structural parameters by Isight software. Next, the annular Zernike polynomials are adopted to fit the wavefront error over the entire surface of the primary mirror for describing low-order aberrations, proving that the composite mount effectively suppresses the wavefront error to smaller than ⋋ <i>/</i>27, as the elevation angle changes from the horizontal to the vertical one. Finally, the ZYGO interferometer wavefront detections show that, after eliminating fabrication imperfections, the RMS of the wavefront error over the entire surface of the mirrors for horizontal and vertical axes, due to deformation, are 0<i>.</i>04⋋ and 0<i>.</i>035⋋, respectively. Compared to the results of the fitted wavefront error, the relative errors are 9.5% and 8.1%. The results show the validity and feasibility of the optimized composite mount and the wavefront fitting method, which can prove its reference significance for the budget and allocation of the systematic wavefront error in meter-scale optical antenna of the TOGS for satellite downlink.</p></div>","PeriodicalId":663,"journal":{"name":"Journal of Russian Laser Research","volume":"45 3","pages":"343 - 353"},"PeriodicalIF":0.7,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141968807","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

Enhanced Terahertz Emitter by Multiplexing Pump Titled Pulse Front in LiNbO3 Crystal 通过在氧化铌锂晶体中复用泵浦脉冲前沿增强太赫兹发射器

IF 0.7 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2024-08-11 DOI: 10.1007/s10946-024-10218-1

Feilong Gao, Shaodong Hou, Bingyuan Zhang, Qi Song

引用次数: 0

Tunable Orthogonal Polarized Dual-Wavelength Pr3+: LiGdF4 Lasers in the Visible Range 可调谐正交偏振双波长 Pr3+：可见光范围内的 LiGdF4 激光器

IF 0.7 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2024-08-11 DOI: 10.1007/s10946-024-10217-2

Baozeng Li, Yongliang Li, Zonghua Hu, Zhenhua Du

引用次数: 0

Influence of Detector Noise on Compressed Sampling Single-Pixel Imaging 探测器噪声对压缩采样单像素成像的影响

IF 0.7 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2024-08-10 DOI: 10.1007/s10946-024-10213-6

Denis Sych

引用次数: 0

An Approach to Direct 3D Imaging with Coherent Light 利用相干光直接进行 3D 成像的方法

IF 0.7 4区物理与天体物理

Journal of Russian Laser Research Pub Date : 2024-08-10 DOI: 10.1007/s10946-024-10212-7

I. A. Artyukov, A. S. Busarov, N. L. Popov, A. V. Vinogradov

引用次数: 0