Control of electron localization in the dissociation of H2+ using orthogonally polarized two-color sequential laser pulses

28th International Conference on Photonic, Electronic and Atomic Collisions

He, Feng^1

Key Laboratory for Laser Plasmas (Ministry of Education), Department of Physics and Astronomy, Shanghai Jiaotong University, Shanghai

200240, China^1

关键词: Dinger equation;    Electron localizations;    Infrared pulse;    Laser technologies;    Molecular axis;    Polarization axis;    Single attosecond pulse;    Time dependent;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/488/3/032046/pdf
DOI  :  10.1088/1742-6596/488/3/032046

来源: IOP

【 摘 要 】

Orthogonally polarized two-color sequential laser pulses are used to control the electron localization in the dissociation of H2+. The first single attosecond pulse, whose polarization axis is perpendicular to the molecular axis, excites H2+from 1sσgto 2pσu, and the time-delayed infrared pulse, whose polarization axis is parallel to the molecular axis, steers the electron between two nuclei. The simulation of the time-dependent Schrödinger equation predicts the control degree of the electron localization can be up to 90% with the current laser technology. To the best of our knowledge, we first reveal that the new mechanism for this asymmetric localization is due to the mixture of 2pπgand 2pπu, instead of 1sσgand 2pσuin the previous studies.