Physics Letters A最新文献_第8页

Generation of relativistic few-cycle radially polarized mid-infrared pulse in plasma channel

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-02-28 DOI: 10.1016/j.physleta.2025.130399

Dong-Ao Li , Guo-Bo Zhang , Yue Cao , Li-Xiang Hu , Xiao-Hu Yang , Fu-Qiu Shao , Tong-Pu Yu

{"title":"Generation of relativistic few-cycle radially polarized mid-infrared pulse in plasma channel","authors":"Dong-Ao Li , Guo-Bo Zhang , Yue Cao , Li-Xiang Hu , Xiao-Hu Yang , Fu-Qiu Shao , Tong-Pu Yu","doi":"10.1016/j.physleta.2025.130399","DOIUrl":"10.1016/j.physleta.2025.130399","url":null,"abstract":"<div><div>Polarized mid-infrared (mid-IR) pulses have many practical applications, including optical imaging, harmonics generation, and laser-electron acceleration, etc. Although it has been able to generate such pulses based on traditional nonlinear optical methods, extending it to long-wavelength, few-cycle, and relativistic intensity range is still very challenging. Here, we proposed a scheme to generate a relativistic long-wavelength few-cycle and radially polarized mid-IR pulse via the photon deceleration. Three-dimensional particle-in-cell simulations show that, by using a plasma channel, the radially polarized mid-IR pulse can be obtained with a center wavelength of 9.4 μm, a dimensionless intensity of <span><math><msub><mrow><mi>a</mi></mrow><mrow><mi>M</mi><mi>I</mi><mi>R</mi></mrow></msub><mo>≈</mo><mn>2.5</mn></math></span>, a 72 fs FWHM duration containing 2.3 optical cycles, and a conversion efficiency of 3.4%. Meanwhile, the beam parameters of the generated radially polarized mid-IR pulse can be effectively controlled by changing the plasma channel depth. The radially polarized pulse can be focused further to excite a stronger plasma wake in a plasma channel with large depth, leading to an increase in the normalized intensity and conversion efficiency of the mid-IR pulse. Such mid-IR pulse sources may offer new opportunities for ultrafast applications and high-field physics, etc.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"540 ","pages":"Article 130399"},"PeriodicalIF":2.3,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143534797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Highly sensitive malaria detection using a graphene-coated dual circular ring resonator biosensor with behaviour prediction based on stacking ensemble

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-02-27 DOI: 10.1016/j.physleta.2025.130398

Jacob Wekalao , Stephen Maina Njoroge , Oumaymah Elamri

{"title":"Highly sensitive malaria detection using a graphene-coated dual circular ring resonator biosensor with behaviour prediction based on stacking ensemble","authors":"Jacob Wekalao , Stephen Maina Njoroge , Oumaymah Elamri","doi":"10.1016/j.physleta.2025.130398","DOIUrl":"10.1016/j.physleta.2025.130398","url":null,"abstract":"<div><div>This study presents a biosensor incorporating graphene and copper for highly sensitive malaria detection. The sensor design features dual circular ring resonators surrounded by a rectangular resonator, all supported on a graphene-coated SiO₂ substrate. The sensor achieves a remarkable sensitivity of 800 GHzRIU<sup>-1</sup> within a refractive index range of 1.373–1.402. Comprehensive parameter optimization studies demonstrate the sensor's robust performance across various operating conditions, including graphene chemical potential, incident angle, and resonator dimensions. The integration of a stacking ensemble machine learning approach further enhances the sensor's predictive capabilities, achieving correlation coefficients (R²) up to 100 % for transmission spectra predictions. COMSOL Multiphysics simulations validate the sensor's detection mechanisms and field distribution characteristics. The proposed biosensor represents a significant advancement in malaria detection technology, offering high sensitivity, reliability, and practical fabrication feasibility.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"541 ","pages":"Article 130398"},"PeriodicalIF":2.3,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Dual microring resonator sensor for simultaneous sensing of magnetic field and temperature

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-02-26 DOI: 10.1016/j.physleta.2025.130397

Pranav George , A.C. Saritha , Ajith Ramachandran

{"title":"Dual microring resonator sensor for simultaneous sensing of magnetic field and temperature","authors":"Pranav George , A.C. Saritha , Ajith Ramachandran","doi":"10.1016/j.physleta.2025.130397","DOIUrl":"10.1016/j.physleta.2025.130397","url":null,"abstract":"<div><div>This paper reports the simultaneous sensing of temperature and magnetic fields using a novel microring resonator waveguide system coupled to a slab waveguide, analysed through the finite element method. The system consists of a slab waveguide coupled to two ring waveguides, where the cladding of one ring is infiltrated with magnetic fluid (MF) and the other with ethanol. The vertical displacement and ring radii are optimised to achieve weak optical coupling between the rings and ensure almost independent resonances. The system demonstrates a linear response to both temperature and magnetic field variations, with high sensitivities of <span><math><mn>175</mn><mspace></mspace><msup><mrow><mtext>pm mT</mtext></mrow><mrow><mo>−</mo><mn>1</mn></mrow></msup></math></span> and <span><math><mn>162</mn><mspace></mspace><mtext>pm</mtext><mspace></mspace><mmultiscripts><mrow><mtext>C</mtext></mrow><none></none><mrow><mo>−</mo><mn>1</mn></mrow><mprescripts></mprescripts><none></none><mrow><mo>∘</mo></mrow></mmultiscripts></math></span>, respectively. Additionally, the device exhibits high-quality factors and figures of merit, making it highly suitable for compact, precise dual-sensing applications in environmental monitoring and space applications.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"540 ","pages":"Article 130397"},"PeriodicalIF":2.3,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Perfect absorption properties of a near-infrared super-surface perfect absorber based on a multilayer subwavelength array structure

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-02-25 DOI: 10.1016/j.physleta.2025.130395

Yujie Wang , Zhimin Liu , Fengqi Zhou , Zao Yi , Junqiao Wang

{"title":"Perfect absorption properties of a near-infrared super-surface perfect absorber based on a multilayer subwavelength array structure","authors":"Yujie Wang , Zhimin Liu , Fengqi Zhou , Zao Yi , Junqiao Wang","doi":"10.1016/j.physleta.2025.130395","DOIUrl":"10.1016/j.physleta.2025.130395","url":null,"abstract":"<div><div>In this paper, we design a near-infrared metasurface perfect absorber. The absorber consists of a substrate, a chromium(Cr) layer and a four-layer nanocirlce array. The chromium(Cr) layer is on the silicon dioxide(SiO<sub>2</sub>) substrate, and the four-layer nanocircle array on the top, which is composed of silicon(Si), magnesium fluoride(MgF<sub>2</sub>), chromium(Cr) and gallium(GaAs) nanocircles with the total thickness of 880nm. The absorption is above 0.913 in the absorption band, where the top absorption is 0.991 and the average absorption is 0.963. Due to the fully symmetric structure, the absorber is not affected by polarization. It can be observed that as the angle of incidence varies from 0° to 60°, the average absorption rate of the absorber does not change significantly. This data indicates the structure's extreme insensitivity to the angle of incident light. Our designed near-infrared metasurface perfect absorber is of good absorption performance and great application prospect in optical communication, broadband thin-film thermal emitter, thermal photovoltaic cell and solar cell. In addition, the high absorption performance of the absorber is insensitive to the tolerance of paramaters which is one of the attraction of practical application.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"540 ","pages":"Article 130395"},"PeriodicalIF":2.3,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489030","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Quantum walk search based edge detection of images

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-02-24 DOI: 10.1016/j.physleta.2025.130391

Pulak Ranjan Giri, Rei Sato, Kazuhiro Saito

{"title":"Quantum walk search based edge detection of images","authors":"Pulak Ranjan Giri, Rei Sato, Kazuhiro Saito","doi":"10.1016/j.physleta.2025.130391","DOIUrl":"10.1016/j.physleta.2025.130391","url":null,"abstract":"<div><div>Quantum walk has emerged as an essential tool for searching marked vertices on various graphs. Recent advances in the discrete-time quantum walk search algorithm have enabled it to effectively handle multiple marked vertices, expanding its range of applications further. In this article, we propose a novel application of this advanced quantum walk search algorithm for the edge detection of images—a critical task in digital image processing. Given the probabilistic nature of quantum computing, obtaining measurement result with a high success probability is essential alongside faster computation time. Our quantum walk search algorithm demonstrates a high success probability in detecting the image edges compared to the existing quantum edge detection methods and outperforms classical edge detection methods with a quadratically faster speed. A small Qiskit circuit implementation of our method using a one-dimensional quantum walk search has been executed in Qiskit's <span><math><mi>q</mi><mi>a</mi><mi>s</mi><mi>m</mi><mi>_</mi><mi>s</mi><mi>i</mi><mi>m</mi><mi>u</mi><mi>l</mi><mi>a</mi><mi>t</mi><mi>o</mi><mi>r</mi></math></span> and <span><math><mi>i</mi><mi>b</mi><mi>m</mi><mi>_</mi><mi>s</mi><mi>y</mi><mi>d</mi><mi>n</mi><mi>e</mi><mi>y</mi><mo>(</mo><mi>f</mi><mi>a</mi><mi>k</mi><mi>e</mi><mo>)</mo></math></span> device.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"540 ","pages":"Article 130391"},"PeriodicalIF":2.3,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 properties of iron-rich Fe-Co alloys: Analysis from the perspective of Co concentration

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-02-24 DOI: 10.1016/j.physleta.2025.130396

Taimin Cheng, Ziyi Yang, Xinxin Zhang, Guoliang Yu

{"title":"The physical properties of iron-rich Fe-Co alloys: Analysis from the perspective of Co concentration","authors":"Taimin Cheng, Ziyi Yang, Xinxin Zhang, Guoliang Yu","doi":"10.1016/j.physleta.2025.130396","DOIUrl":"10.1016/j.physleta.2025.130396","url":null,"abstract":"<div><div>Although the ground-state structure and magnetism of Fe-Co alloys are well known, the physical properties such as lattice dynamics, elasticity, and magnetocrystalline anisotropy are rarely reported. Here, the physical properties of Fe<sub>16-</sub><em><sub>x</sub></em>Co<em><sub>x</sub></em> (<em>x</em> = 1–8) alloys are systematically investigated using first-principles calculations, with emphasis on the composition-property relationship. As Co concentration increases, the lattice volume, total magnetic moments (saturation magnetization), and first magnetocrystalline anisotropy constants of the alloys initially increase and subsequently decrease, with Fe<sub>13</sub>Co<sub>3</sub> alloy exhibiting an extremum. The dynamical and mechanical properties change with Co concentration in non-specific trends. Most alloys are both mechanically and dynamically stable. The Fe<sub>12</sub>Co<sub>4</sub> and Fe<sub>9</sub>Co<sub>7</sub> are dynamically and mechanically unstable, respectively. The elastic modulus, ductility/brittleness, and elastic anisotropy are explored in detail. Finally, the magnetic hardness parameters show that Fe<sub>13</sub>Co<sub>3</sub> alloy is a semi-hard magnet, while other alloys are soft magnetic materials. This research provides a theoretical basis for the application of Fe-Co alloys.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"540 ","pages":"Article 130396"},"PeriodicalIF":2.3,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143507523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Terahertz interface states in a heterostructure parallel plate waveguide 异质结构平行板波导中的太赫兹界面态

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-02-23 DOI: 10.1016/j.physleta.2025.130371

Huan Liu , Ya-Yun Zhang , Jing Ma , Xiang-Yu Wang , Huan Zhang , Yong Li , Ya-Xian Fan , Zhi-Yong Tao

{"title":"Terahertz interface states in a heterostructure parallel plate waveguide","authors":"Huan Liu , Ya-Yun Zhang , Jing Ma , Xiang-Yu Wang , Huan Zhang , Yong Li , Ya-Xian Fan , Zhi-Yong Tao","doi":"10.1016/j.physleta.2025.130371","DOIUrl":"10.1016/j.physleta.2025.130371","url":null,"abstract":"<div><div>Heterojunction is usually regarded as an interface structure composed of two semiconductor materials with the different band structures. Some unusual interface effects, such as band bending, charge accumulation or depletion, will occur at the interface, which is completely different from the electrical and optical properties of a single material. Here, we report our experimental observation and theoretical and numerical validation of a terahertz (THz) interface state in a heterostructure corrugated parallel plate waveguide, which is seamlessly connected by two periodic corrugated waveguides with similar bandgaps but different structures. The THz interface state that we observed occurs at the connection of the two waveguides and causes an extraordinary narrow linewidth transmission peak within the original bandgap, whose mechanism is attributed to the local resonance. The center frequency of the transmission peak can be tuned by adjusting the interface length, while its bandwidth narrows with the increased number of periods of corrugated structure. These findings on THz interface states in heterostructure waveguides could be applicable in narrow linewidth filters, high-sensitivity sensors, and detectors.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"540 ","pages":"Article 130371"},"PeriodicalIF":2.3,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143511657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

A DFT study of the halide inorganic LiBeI3 perovskite

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-02-23 DOI: 10.1016/j.physleta.2025.130394

S. Idrissi , A. Jabar , L. Bahmad

{"title":"A DFT study of the halide inorganic LiBeI3 perovskite","authors":"S. Idrissi , A. Jabar , L. Bahmad","doi":"10.1016/j.physleta.2025.130394","DOIUrl":"10.1016/j.physleta.2025.130394","url":null,"abstract":"<div><div>This work investigates the structural, elastic, mechanical, electronic, optical, and thermoelectric properties of the novel inorganic halide perovskite compound LiBeI<sub>3</sub> using density functional theory (DFT) within the Wien2k package. Our theoretical analysis provides fundamental insights into the nature of this compound, revealing that LiBeI<sub>3</sub> is a semiconductor with an indirect bandgap of 0.434 eV. The electronic and optical properties were analyzed in detail, including the electronic energy loss function, absorption coefficient, real and imaginary components of the dielectric function, and optical conductivity. Notably, LiBeI<sub>3</sub> exhibits strong absorption in the UV region, making it a promising candidate for photovoltaic applications. Its high absorption coefficient also suggests potential use in light-emitting diodes (LEDs) and laser technologies. Furthermore, we explored its thermoelectric behavior by calculating the electrical conductivity, Seebeck coefficient, and electronic thermal conductivity. The positive temperature coefficient (PTC) effect observed in the Seebeck coefficient indicates an increasing power factor with temperature, a characteristic feature of semiconductors and semimetals. This behavior is critical for understanding the thermoelectric efficiency of LiBeI<sub>3</sub>, highlighting its potential for energy harvesting applications based on temperature gradients. Our findings contribute to the growing interest in halide perovskites and suggest that LiBeI<sub>3</sub> could serve as a multifunctional material for optoelectronic and thermoelectric technologies.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"540 ","pages":"Article 130394"},"PeriodicalIF":2.3,"publicationDate":"2025-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

A memristive neuron with nonlinear membranes and network patterns

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-02-22 DOI: 10.1016/j.physleta.2025.130390

Binchi Wang , Ya Wang , Xiaofeng Zhang , Zhigang Zhu

{"title":"A memristive neuron with nonlinear membranes and network patterns","authors":"Binchi Wang , Ya Wang , Xiaofeng Zhang , Zhigang Zhu","doi":"10.1016/j.physleta.2025.130390","DOIUrl":"10.1016/j.physleta.2025.130390","url":null,"abstract":"<div><div>Memristor-coupled nonlinear circuits can be controlled to present similar firing patterns as biological neurons, and the memristive term and magnetic flux variable in neuron models can address the effect of electromagnetic induction during neural activities. A single capacitive variable rarely discerns the material properties of the cell membrane and the field difference between the two sides of the cell membrane. In this work, a pair of capacitors is connected via a nonlinear resistor, in parallel with a magnetic flux-controlled memristor (MFCM) in an additive branch circuit, and external illumination is captured by a phototube to build a new neural circuit. The obtained memristive neuron has two capacitive variables and exact energy definition, and the double-layer cell membrane is considered as a nonlinear membrane because its dependence on channel current and potential diversity for outer and inner membranes is nonlinear form. The photocurrent controls the firing patterns and modes of electrical activities completely during energy changes, and a similar stochastic resonance is detected by measuring the distribution of the <em>CV</em> (coefficient of variability) and the average energy value of the neuron vs. noise intensity. When energy function is available, an adaptive growth law is proposed to control the membrane capacitance ratio and then mode transition and energy shift are regulated effectively. Finally, memristive neurons are clustered to explore the collective electrical activities by measuring pattern formation in the neural network on a square array. When the adaptive control law is activated for the coupling intensity and intrinsic bifurcation parameter,a stable target wave is induced to control the network dynamics.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"540 ","pages":"Article 130390"},"PeriodicalIF":2.3,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143519580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Charge resonance enhanced ionization of oxygen molecule in intense laser field

IF 2.3 3区物理与天体物理

Physics Letters A Pub Date : 2025-02-22 DOI: 10.1016/j.physleta.2025.130348

Yun Wang, Guoqiang Shi, Yingbo Shi, Zexuan Wang, Shaohua Sun, Zuoye Liu

{"title":"Charge resonance enhanced ionization of oxygen molecule in intense laser field","authors":"Yun Wang, Guoqiang Shi, Yingbo Shi, Zexuan Wang, Shaohua Sun, Zuoye Liu","doi":"10.1016/j.physleta.2025.130348","DOIUrl":"10.1016/j.physleta.2025.130348","url":null,"abstract":"<div><div>The charge resonance enhanced ionization (CREI) phenomenon of O<sub>2</sub> is induced by a femtosecond laser field. We measure the time-of-flight spectra of O<sup>+</sup> as a function of time delay and find a new structure in the O<sup>+</sup> spectrum at a delay of 60 fs. Based on the kinetic energy release of the O<sup>+</sup> and motion time of the O<sub>2</sub><sup>+</sup>wavepacket, the CREI process can be divided into two steps. Firstly, O<sub>2</sub> is ionized to the <em>a</em><sup>4</sup>Π<em><sub>u</sub></em> of O<sub>2</sub><sup>+</sup>, the coupling between the <em>a</em><sup>4</sup>Π<em><sub>u</sub></em> and <em>f</em><sup>4</sup>Π<em><sub>g</sub></em> happens by the pump pulse, and then the nuclear wavepacket continuously evolves on the <em>f</em><sup>4</sup>Π<em><sub>g</sub></em> state in the absence of laser field. Secondly, the probe pulse causes the CREI process between the <em>f</em><sup>4</sup>Π<em><sub>g</sub></em>(O<sub>2</sub><sup>+</sup>) and <em>W</em><sup>3</sup>Δ<em><sub>u</sub></em>(O<sub>2</sub><sup>2+</sup>) via the intermediate state 2<sup>4</sup>Π<em><sub>g</sub></em>(O<sub>2</sub><sup>+</sup>). According to dissociation pathway, we utilize classical model to simulate the evolution time of O<sub>2</sub><sup>+</sup>, which is 57 fs, this is in good agreement with the experimental results.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":"540 ","pages":"Article 130348"},"PeriodicalIF":2.3,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143552353","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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