Search Results - "Bandrauk, André D."

Probing nuclear motion by frequency modulation of molecular high-order harmonic generation by Bian, Xue-Bin, Bandrauk, André D

“…Molecular high-order harmonic generation (MHOHG) in a non-Born-Oppenheimer treatment of H(2)(+), D(2)(+), is investigated by numerical simulations of the…”
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Photon momentum sharing between an electron and an ion in photoionization: from one-photon (photoelectric effect) to multiphoton absorption by Chelkowski, Szczepan, Bandrauk, André D, Corkum, Paul B

“…We investigate photon-momentum sharing between an electron and an ion following different photoionization regimes. We find very different partitioning of the…”
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Single circularly polarized attosecond pulse generation by intense few cycle elliptically polarized laser pulses and terahertz fields from molecular media by Yuan, Kai-Jun, Bandrauk, André D

“…We present a method for producing a single circularly polarized attosecond pulse by an intense few cycle elliptically polarized laser pulse combined with a…”
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Monitoring ultrafast vibrational dynamics of isotopic molecules with frequency modulation of high-order harmonics by He, Lixin, Zhang, Qingbin, Lan, Pengfei, Cao, Wei, Zhu, Xiaosong, Zhai, Chunyang, Wang, Feng, Shi, Wenjing, Li, Muzi, Bian, Xue-Bin, Lu, Peixiang, Bandrauk, André D.

“…Molecules constituted by different isotopes are different in vibrational modes, making it possible to elucidate the mechanism of a chemical reaction via the…”
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Ultrafast X‑ray Photoelectron Imaging of Attosecond Electron Dynamics in Molecular Coherent Excitation by Yuan, Kai-Jun, Bandrauk, André D

“…Ultrafast photoelectron imaging allows to measure information about coherent electron dynamic processes in materials or chemical compounds on femtosecond to…”
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Signature of Molecular Orbital Symmetry in High-Order Harmonic Generation by Bichromatic Circularly Polarized Laser Pulses by Yuan, Kai-Jun, Chelkowski, Szczepan, Bandrauk, André D

“…Molecular orbital symmetry is shown to be an important factor in determining orders and helicities (polarizations) of high-order harmonic generation (HHG) by…”
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Attosecond time-resolved imaging of molecular structure by photoelectron holography by Bian, Xue-Bin, Bandrauk, André D

“…Dynamic imaging of the molecular structure of H(2)(+) is investigated by attosecond photoelectron holography. The interference between direct (reference) and…”
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Attosecond Dynamics of Molecular Electronic Ring Currents by Yuan, Kai-Jun, Shu, Chuan-Cun, Dong, Daoyi, Bandrauk, André D

“…Ultrafast charge migration is of fundamental importance to photoinduced chemical reactions. However, exploring such a quantum dynamical process requires…”
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Multichannel molecular high-order harmonic generation from asymmetric diatomic molecules by Bian, Xue-Bin, Bandrauk, André D

“…Multichannel molecular high-order harmonic generation (MHOHG) from a single electron asymmetric molecular ion HeH2+ is investigated numerically. It is found…”
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Time-Resolved Photoelectron Imaging of Molecular Coherent Excitation and Charge Migration by Ultrashort Laser Pulses by Yuan, Kai-Jun, Bandrauk, André D

“…Charge migration is a fundamental and important process in the photochemistry of molecules and has been explored by time-resolved photoelectron angular…”
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Effect of Nuclear Motion on Molecular High Order Harmonic Pump Probe Spectroscopy by Bredtmann, Timm, Chelkowski, Szczepan, Bandrauk, André D

“…We study pump–probe schemes for the real time observation of electronic motion on attosecond time scale in the molecular ion H2 + and its heavier isotope T2 +…”
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Resonantly enhanced pair production in a simple diatomic model by Fillion-Gourdeau, François, Lorin, Emmanuel, Bandrauk, André D

“…A new mechanism for the production of electron-positron pairs from the interaction of a laser field and a fully ionized diatomic molecule in the tunneling…”
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Effect of nuclear motion on molecular high-order harmonics and on generation of attosecond pulses in intense laser pulses by Bandrauk, André D, Chelkowski, Szczepan, Kawai, Shinnosuke, Lu, Huizhong

“…We calculate harmonic spectra and shapes of attosecond-pulse trains using numerical solutions of Non-Born-Oppenheimer time-dependent Shrödinger equation for 1D…”
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A split-step numerical method for the time-dependent Dirac equation in 3-D axisymmetric geometry by Fillion-Gourdeau, François, Lorin, Emmanuel, Bandrauk, André D.

“…A numerical method is developed to solve the time-dependent Dirac equation in cylindrical coordinates for 3-D axisymmetric systems. The time evolution is…”
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Photon momentum transfer in photoionisation: unexpected breakdown of the dipole approximation by Chelkowski, Szczepan, Bandrauk, André D.

“…In most models and theoretical calculations describing multiphoton or tunnelling ionisation by infrared light, and in most part of the spectroscopy, the dipole…”
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Charge resonance enhanced ionization of CO2 probed by laser Coulomb explosion imaging by Bocharova, Irina, Karimi, Reza, Penka, Emmanuel F, Brichta, Jean-Paul, Lassonde, Philippe, Fu, Xiquan, Kieffer, Jean-Claude, Bandrauk, André D, Litvinyuk, Igor, Sanderson, Joseph, Légaré, François

“…The process by which a molecule in an intense laser field ionizes more efficiently as its bond length increases towards a critical distance R(c) is known as…”
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Circularly polarised attosecond pulses: generation and applications by Bandrauk, André D., Yuan, Kai-Jun

“…Molecular high-order harmonic generation(MHOHG) is simulated for H + 2 in the nonlinear nonperturbative regime of laser-molecule interactions with ultrashort…”
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Electron Interference in Molecular Photoionization by Attosecond Laser Pulses by Yuan, Kai-Jun, Lu, Huizhong, Bandrauk, André D.

“…Molecular photoionization by intense attosecond linearly and circularly polarized X‐ray laser pulses is investigated from numerical solutions of time‐dependent…”
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Probing Attosecond Electron Coherence in Molecular Charge Migration by Ultrafast X-Ray Photoelectron Imaging by Yuan, Kai-Jun, Bandrauk, André D

“…Electron coherence is a fundamental quantum phenomenon in today’s ultrafast physics and chemistry research. Based on attosecond pump–probe schemes, ultrafast…”
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Molecular photoelectron interference effects by intense circularly polarized attosecond x-ray pulses by Yuan, Kai-Jun, Lu, Huizhong, Bandrauk, André D.

“…We present photoelectron interference effects in molecular photoionization by intense circularly polarized attosecond X-ray laser pulses. Simulations are…”
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