Dynamic of rescattering-electron wave packets in strong and short-wavelength laser fields: Roles of Coulomb potential and excited states

doi:https://doi.org/10.1103/PHYSREVA.84.043423

Title: Dynamic of rescattering-electron wave packets in strong and short-wavelength laser fields: Roles of Coulomb potential and excited states

Full Record
Other Related Research

Abstract

We investigate the high-order harmonic generation of atoms and molecules exposed in strong and short-wavelength (shorter than 800 nm) laser fields. Our simulations show that the electronic rescattering trajectory depends strongly on the property of the Coulomb potential. Using numerical schemes, we identify the important role of excited states in the emission times of harmonics from molecules. We propose a model, which considers the initial position when electrons tunnel out from the potential, to explain the electronic response in intense and relatively high-frequency laser fields.

Authors:

Yanjun, Chen ^[1]

Beijing Computational Science Research Center, Beijing (China)

Publication Date:: 2011-10-15

OSTI Identifier:: 22095380

Resource Type:: Journal Article

Journal Name:: Physical Review. A

Additional Journal Information:: Journal Volume: 84; Journal Issue: 4; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1050-2947

Country of Publication:: United States

Language:: English

Subject:: 74 ATOMIC AND MOLECULAR PHYSICS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ATOMS; COMPUTERIZED SIMULATION; COULOMB FIELD; ELECTRONS; EMISSION; EXCITED STATES; HARMONIC GENERATION; LASER RADIATION; MOLECULES; POTENTIALS; RESCATTERING; WAVE PACKETS; WAVELENGTHS

Citation Formats


                    Yanjun, Chen. Dynamic of rescattering-electron wave packets in strong and short-wavelength laser fields: Roles of Coulomb potential and excited states.  United States: N. p., 2011. 
        Web.  doi:10.1103/PHYSREVA.84.043423.

Copy to clipboard


                    Yanjun, Chen. Dynamic of rescattering-electron wave packets in strong and short-wavelength laser fields: Roles of Coulomb potential and excited states.  United States.  https://doi.org/10.1103/PHYSREVA.84.043423

Copy to clipboard


                    Yanjun, Chen. Sat .  
        "Dynamic of rescattering-electron wave packets in strong and short-wavelength laser fields: Roles of Coulomb potential and excited states".  United States.  https://doi.org/10.1103/PHYSREVA.84.043423.

Copy to clipboard


                    
@article{osti_22095380,

  title        = {Dynamic of rescattering-electron wave packets in strong and short-wavelength laser fields: Roles of Coulomb potential and excited states},

  author       = {Yanjun, Chen},

  abstractNote = {We investigate the high-order harmonic generation of atoms and molecules exposed in strong and short-wavelength (shorter than 800 nm) laser fields. Our simulations show that the electronic rescattering trajectory depends strongly on the property of the Coulomb potential. Using numerical schemes, we identify the important role of excited states in the emission times of harmonics from molecules. We propose a model, which considers the initial position when electrons tunnel out from the potential, to explain the electronic response in intense and relatively high-frequency laser fields.},

  doi          = {10.1103/PHYSREVA.84.043423},

  url          = {https://www.osti.gov/biblio/22095380},
  journal      = {Physical Review. A},

  issn         = {1050-2947},

  number       = 4,

  volume       = 84,

  place        = {United States},

  year         = {2011},

  month        = {10}

}

Copy to clipboard

Journal Article:

https://doi.org/10.1103/PHYSREVA.84.043423

Other availability

Find in Google Scholar

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Exploration of strong-field multiphoton double ionization, rescattering, and electron angular distribution of He atoms in intense long-wavelength laser fields: The coupled coherent-state approach

Journal Article Jing, Guo ; Xueshen, Liu ; Chu, Shih-I - Physical Review. A

We extend the coupled coherent-state (CCS) approach to simulate the strong-field ionization of helium atoms at long wavelengths. This approach uses a basis of trajectories guided by frozen Gaussian coherent states, sampled from a Monte Carlo distribution, as the initial states of the quantum time-dependent Schroedinger equations. The CCS trajectories move over averaged potentials, which can remove the Columbic singularities exactly. The low-energy structure is predicted by our CCS calculation and a ''rescattering'' event is clearly identified in the higher-energy regime. In addition, the nonsequential double ionization is also explored and the rescattering event can be identified as the majormore »« less
https://doi.org/10.1103/PHYSREVA.82.023402
Unraveling nonadiabatic ionization and Coulomb potential effect in strong-field photoelectron holography

Journal Article Song, Xiaohong ; Lin, Cheng ; Sheng, Zhihao ; ... - Scientific Reports

Strong field photoelectron holography has been proposed as a means for interrogating the spatial and temporal information of electrons and ions in a dynamic system. After ionization, part of the electron wave packet may directly go to the detector (the reference wave), while another part may be driven back and scatters off the ion(the signal wave). The interference hologram of the two waves may be used to extract target information embedded in the collision process. Unlike conventional optical holography, however, propagation of the electron wave packet is affected by the Coulomb potential as well as by the laser field. Inmore »« less
Cited by 11
https://doi.org/10.1038/srep28392

Full Text Available
Incorporation of a wave-packet propagation method into the S-matrix framework: Investigation of the effects of excited state dynamics on intense-field ionization

Journal Article Kanno, Manabu ; Kato, Tsuyoshi ; Kono, Hirohiko ; ... - Physical Review. A

We propose a theoretical method for investigation of ionization of atoms and molecules in intense laser fields that copes with the effects of excited state dynamics (or intramolecular electronic dynamics). The time-evolving wave packet composed of only bound electronic states, vertical bar {phi}{sub i}(t)>, is introduced into a framework of the intense-field S-matrix theory. Then, the effects of both Coulomb field and radiation field on the bound electron(s) are well described by vertical bar {phi}{sub i}(t)>, while the effects of a radiation field on a freed electron are also treated in a nonperturbative way. We have applied the theory tomore »« less
https://doi.org/10.1103/PhysRevA.72.033418
Strong Laser Field Fragmentation of H{sub 2}: Coulomb Explosion without Double Ionization

Journal Article Manschwetus, B ; Nubbemeyer, T ; Gorling, K ; ... - Physical Review Letters

We observe fragmentation of H{sub 2} molecules exposed to strong laser fields into excited neutral atoms. The measured excited neutral fragment spectrum resembles the ionic fragmentation spectrum including peaks due to bond softening and Coulomb explosion. To explain the occurrence of excited neutral fragments and their high kinetic energy, we argue that the recently investigated phenomenon of frustrated tunnel ionization is also at work in the neutralization of H{sup +} ions into excited H* atoms. In this process the tunneled electron does not gain enough drift energy from the laser field to escape the Coulomb potential and is recaptured. Calculationmore »« less
https://doi.org/10.1103/PHYSREVLETT.102.113002
Numerical simulation of strong-field electron spectra of Xe in the rescattering region

Journal Article Yaqiu, Liang - Physical Review. A

We investigate the high-energy above-threshold ionization (HATI) plateau for Xe in a strong laser field at peak intensity of about 0.85x10{sup 14} W/cm{sup 2} with wavelengths of 800, 1250, 1500, and 2000 nm. Numerical simulations are performed using a recently developed quantitative rescattering (QRS) model. According to the QRS model, the two-dimensional (2D) photoelectron momentum distribution can be treated as a product of the returning electron wave packet and the elastic differential cross section (DCS) for free electrons scattered with the parent ion. From the 2D momentum distributions, the HATI plateau can be obtained. By using different single-active electron potentialsmore »« less
https://doi.org/10.1103/PHYSREVA.82.055403

Similar Records