Steering the electron in dissociatingH2+via manipulating two-state population dynamics by a weak low-frequency field

Abstract

We propose a scheme to steer the electron localization in dissociating H2+ by using the combination of a phase-stabilized few-cycle mid-infrared laser pulse and a low-frequency field. Via manipulating the population dynamics in the lso g and 2pou states by the weak low-frequency field, the dissociative wave packets on these two degenerate states of opposite parities are managed to share the same kinetic energy and overlap in space. By adjusting the carrier-envelope phase of the mid-infrared pulse or simply changing the intensity of the low-frequency field, the electron localization induced by the spatial interference of the two dissociation pathways can be efficiently controlled.

Laser-induced electron localization in H2+: mixed quantum-classical dynamics based on the exact time-dependent potential energy surface

“…Therefore the results of this study show that to reproduce the laser-induced electron localization dynamics accurately by means of a mixed quantum-classical dynamics scheme, we have to go beyond the traditional methods such as surface-hopping or Ehrenfest methods. Our results here encourage the development of mixed quantum-classical schemes based on Eqs (17) and (18) [62] to simulate strong-field processes.…”

“…It allows the observation of electronic motion in real-time, and even offers the control of electron motion and localization via lasers. Several groups [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] have demonstrated that it is possible to control electronic motion in a dissociating molecule and localize it selectively on one of the products of dissociation, with several different strategies. One technique employs the carrier envelope phase (CEP) of a single few-cycle laser pulse [18][19][20][21][22][23][24][25] , and another employs the time-delay between two coherent ultrashort pulses [7][8][9][10][11][12][13][14][15][16][17].…”

High-order-harmonic generation of a doped semiconductor

“…With the fast development of laser technology, the interaction between intense laser pulses and matters has been studied extensively over the past several decades and revealed many interesting phenomena [1][2][3]. One of the most interesting phenomena is high-order harmonic generation (HHG) [4,5], because it promises many important and unprecedented applications like generating coherent ultrafast extreme violet radiations [1,[6][7][8] and probing the ultrafast dynamics of atomic, molecular and solid systems [9][10][11][12][13].…”

Correlated electron-nuclear dynamics in above-threshold multiphoton ionization of asymmetric molecule

“…Finally, the time evolution of the electron wave packet of bound states of HeH 2+ can be calculated by applying the energy window operator 21 40 41 42 …”