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Journal of Russian Laser Research最新文献

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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
{"title":"Nanosecond Pulse Generation in the C-Band Region Using Silver Sulfide as a Saturable Absorber","authors":"Norizan Ahmed,&nbsp;Nur Farhanah Zulkipli,&nbsp;Nurhaffizah Hassan,&nbsp;Rosmawati Shafie,&nbsp;Syazilawati Mohamed","doi":"10.1007/s10946-024-10188-4","DOIUrl":"10.1007/s10946-024-10188-4","url":null,"abstract":"<div><p>We successfully demonstrate the generation of nanosecond pulses in a passively Erbium-doped fiber laser (EDFL) by an Ag<sub>2</sub>S-based saturable absorbeer (SA). A simple and low-cost liquid phase exfoliation (LPE) method is used to fabricate the SA. Through LPE, the SA element is coated onto a thin film of polyvinyl alcohol (PVA), which serves as the host material. The Ag<sub>2</sub>S SA film exhibits good nonlinear absorption characteristics to give it strong potential as an ideal SA. It has a modulation depth of 25.3% and a saturation intensity of 1.11 MW/cm<sup>2</sup>. The laser is able to generate a self-started mode-locked pulse at a threshold pump power of 145.83 mW with a fundamental repetition rate of 0.98 MHz and a pulse duration of 256 ns, respectively. At the maximum pump power, the laser delivers a pulse energy of 2.08 nJ and an output power of 2.11 mW. This demonstration suggests that Ag<sub>2</sub>S SA has good capacity for generating nanosecond mode-locked lasers in the <i>C</i>-band region.</p></div>","PeriodicalId":663,"journal":{"name":"Journal of Russian Laser Research","volume":"45 1","pages":"58 - 65"},"PeriodicalIF":0.7,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140148157","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
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
{"title":"Generation of Dual-Wavelength Optical Domain–Wall Dark–Bright Pulses by Composite Filtering Effects","authors":"Qingyu Chang","doi":"10.1007/s10946-024-10187-5","DOIUrl":"10.1007/s10946-024-10187-5","url":null,"abstract":"<div><p>Optical domain–wall (DW) solitons have attracted considerable attention for their special applications in wavelength-division multiplexing and signal processing in optical communications. In this study, we construct a dispersion-managed fiber laser with a composite filtering effect composed of nonlinear polarization rotation (NPR) filtering and Lyot filtering for achieving dual-wavelength domain–wall dark–bright pulses. Our optical-domain dark–bright pulse is characterized by even, though it has two optical wavelength components, still has the same repetition frequency. The phenomenon of dual-wavelength dark and bright pulses occurs by adjusting the composite filtering, and the dark and bright pulses can be separated by continuing the filtering. Our work presents a novel approach to achieve dual-wavelength domain–wall dark–bright pulses.</p></div>","PeriodicalId":663,"journal":{"name":"Journal of Russian Laser Research","volume":"45 1","pages":"51 - 57"},"PeriodicalIF":0.7,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140147690","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 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
{"title":"Research on Ghost Imaging Method Based on Binocular Vision Matching Fusion","authors":"Hualong Ye,&nbsp;Daidou Guo,&nbsp;Tongxu Xu","doi":"10.1007/s10946-024-10192-8","DOIUrl":"10.1007/s10946-024-10192-8","url":null,"abstract":"<div><p>In order to meet the visual characteristics of human eyes, in this paper, we propose a ghost imaging method based on binocular vision matching fusion. The imaging process of the left-eye camera and the right-eye camera in binocular vision system is realized, using ghost imaging algorithm, and its weak signal imaging characteristics can effectively compensate the parallax between the left-eye camera and the right-eye camera. The Speeded Up Robust Features algorithm is used to match the feature points of the two sub-images. Combined with the fusion algorithm of New Sum of Modified Laplacian, the two sub-images after registration are fused to obtain a clearer image. Whether from the visual perception (human vision) or objective analysis (CC, SSIM, IE, RMSE, PSNR, and BER), it can be proved that the proposed scheme has better image quality, better fidelity and robustness, and is closer to the ideal image, which provides a new method for binocular vision imaging technology.</p></div>","PeriodicalId":663,"journal":{"name":"Journal of Russian Laser Research","volume":"45 1","pages":"91 - 105"},"PeriodicalIF":0.7,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140147836","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
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":"45 1","pages":"117 - 125"},"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
{"title":"Research on a Broadband Compact Polarization Beam Splitter","authors":"Zhibin Wang,&nbsp;Xuwei Hou,&nbsp;Zhengyang Li,&nbsp;Jiutian Zhang","doi":"10.1007/s10946-024-10190-w","DOIUrl":"10.1007/s10946-024-10190-w","url":null,"abstract":"<div><p>Many devices based on silicon and other photonic integrated circuit platforms exhibit significant polarization dependence. Polarization beam splitter (PBS) is a device that split optical signals into transverse electric (TE) and transverse magnetic (TM) modes. Among various PBSs, asymmetric directional couplers are widely used due to their fine performance, but their working bandwidth is limited due to wavelength changes that can lead to deviations in effective refractive index and coupling strength. We propose a PBS, which uses metamaterial anisotropy to replace structural asymmetry and break the bandwidth bottleneck. It achieves good performance in the wavelength range of 258 nm, where the extinction ratio of the TM polarization is greater than 24 dB and that of the TE polarization is greater than 26 dB. It covers the E, S, C, L, and U bands, and the coupling area is as small as 7.25×2.625 μm, with a total device footprint of 15.65×6.125 μm.</p></div>","PeriodicalId":663,"journal":{"name":"Journal of Russian Laser Research","volume":"45 1","pages":"74 - 83"},"PeriodicalIF":0.7,"publicationDate":"2024-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140148163","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
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
{"title":"Nonlinear Optical Properties of Plasmon–Exciton Nanostructures Based on PbS Quantum Dots and Gold Nanorods in the Field of Nanosecond Laser Pulses","authors":"A. I. Zvyagin,&nbsp;T. A. Chevychelova,&nbsp;K. S. Chirkov,&nbsp;M. S. Smirnov,&nbsp;O. V. Ovchinnikov,&nbsp;E. P. Denisova","doi":"10.1007/s10946-024-10191-9","DOIUrl":"10.1007/s10946-024-10191-9","url":null,"abstract":"<div><p>We present the results of our study of nonlinear optical response observed in plasmon–exciton nanostructures based on PbS quantum dots passivated with thioglycolic acid and gold nanorods under the influence of 10 ns second harmonic pulses (532 nm) of Nd<sup>3+</sup>:YAG laser. We show that the association of components of a hybrid nanostructure leads to increase in the reverse saturable absorption in PbS quantum dots against the background of nonlinear refraction. Coating quantum dots with a monolayer of SiO<sub>2</sub> reduces this effect due to blocking the process of phototransfer of charge from a quantum dot to a metal nanoparticle, which is confirmed by the quenching and reduction in the luminescence lifetime of PbS quantum dots in the presence of gold nanorods.</p></div>","PeriodicalId":663,"journal":{"name":"Journal of Russian Laser Research","volume":"45 1","pages":"84 - 90"},"PeriodicalIF":0.7,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140124943","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
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
{"title":"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","authors":"Ersoy Şahin","doi":"10.1007/s10946-024-10185-7","DOIUrl":"10.1007/s10946-024-10185-7","url":null,"abstract":"<div><p>We asses impact of the temperature of <sup>87</sup>Rb atoms on the linewidths and amplitudes of the F = 1 → F′ = 0, 1, 2 and F = 2 → F′ = 1, 2, 3 hyperfine resonances of the <sup>87</sup>Rb D<sub>2</sub> line, using the circularly-polarized pumping beam and the probe laser beam. To achieve high-precision and accuracy, frequency-stabilized narrow-linewidth extended-cavity diode lasers, we employ a temperature-controlled Fabry–Pérot interferometer and a magnetically-shielded temperature-controlled Rb cell with dimensions in the centimeter range, containing enriched <sup>87</sup>Rb atoms. Consequently, the linewidth and amplitude measurements are conducted with inaccuracies of 1.5 MHz and 0.4 mV, respectively.</p></div>","PeriodicalId":663,"journal":{"name":"Journal of Russian Laser Research","volume":"45 1","pages":"38 - 44"},"PeriodicalIF":0.7,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140097184","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
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,&nbsp;Guo Ma,&nbsp;Yunyun Zhang,&nbsp;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":"45 1","pages":"28 - 37"},"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,&nbsp;E. M. Khalil,&nbsp;S. Sanad,&nbsp;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":"45 1","pages":"14 - 27"},"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
Laser-Induced Hyper-Sound Surface Acoustic Waves as a Probe of Extended Defects in Crystalline CdZnTe 激光诱导超声表面声波作为晶体 CdZnTe 中扩展缺陷的探针
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/s10946-024-10186-6
N. Yu. Frolov, A. I. Sharkov
{"title":"Laser-Induced Hyper-Sound Surface Acoustic Waves as a Probe of Extended Defects in Crystalline CdZnTe","authors":"N. Yu. Frolov,&nbsp;A. I. Sharkov","doi":"10.1007/s10946-024-10186-6","DOIUrl":"10.1007/s10946-024-10186-6","url":null,"abstract":"<div><p>For CdZnTe crystals containing extended defects – coherent and incoherent twin boundaries, as well as lamellar systems of twins, we measure the propagation patterns of surface acoustic waves (SAW) in the gigahertz range excited by a sharply focused femtosecond laser pulse. Comparison of the calculated SAW radial velocities with experimental data allows us to determine the local crystallographic orientation of crystal regions with defects. We discover strong anisotropic scattering of SAW at twin boundaries and show that the structure of the twin boundary can be determined from the pattern of SAW scattering. Also, we demonstrate the non-reciprocal SAW propagation in lamellar twin systems, as well as quasi-waveguide SAW propagation along the lamellar twin layer.</p></div>","PeriodicalId":663,"journal":{"name":"Journal of Russian Laser Research","volume":"45 1","pages":"45 - 50"},"PeriodicalIF":0.7,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140074858","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
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