نتایج جستجو برای: tdse
تعداد نتایج: 55 فیلتر نتایج به سال:
Using orthogonally polarized two-color (OTC) laser fields on neon and coincidence momentum imaging we gain access to the Coulomb influence in single ionization on sub-cycle times, and demonstrate control over the two electron-emission dynamics in double ionization. We show that tuning the relative phase of the OTC fields allows dictating whether the two electrons are predominantly emitted in a ...
We present a systematic study of the molecular-frame photo-electron angular distributions produced by multiphoton double ionization of H2 using circularly polarized 800 nm, femtosecond laser pulses. We compare experimental results to numerical results obtained from a reduced-dimensionality time-dependent Schrödinger equation (TDSE) model. In addition, we implement a TDSE-like version of the str...
We analysed the energy and momentum distributions of high-energy ‘plateau’ photoelectrons. These electrons, with energies above 4Up (Up is the ponderomotive energy), have been understood qualitatively as due to the backscattering of laser-induced returning electrons by the target ion. Here, we establish a quantitative rescattering (QRS) theory to show that the species and laser-intensity depend...
Recent measurements on high-order harmonic generation (HHG) from N2 aligned perpendicular to the driving laser polarization [B. K. McFarland el al, Science 322, 1232 (2008)] have shown a maximum at the rotational half-revival. This has been interpreted as the signature of the HHG contribution from the molecular orbital just below the highest occupied molecular orbital (HOMO). By using the recen...
We explore the effect of nuclear mass on the laser-driven electron localization process. We dissociate a mixed H2/D2 target with intense, carrier-envelope-phase (CEP) stable 6 fs laser pulses and detect the products in a reaction microscope. We observe a very strong CEP-dependent asymmetry in proton/deuteron emission for low dissociation energy channels. This asymmetry is stronger for H2 than f...
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