Ionisation effect on the electron localisation in the subcycle waveform shaping scheme

Abstract

We have theoretically studied the ionisation effect on the asymmetric dissociation of H⁺₂ exposed to the synthesised multicycle infrared pulses of different wavelengths by solving the time-dependent Schrdinger equation without using the Born–Oppenheimer approximation. It has been demonstrated that the ionisation does slightly influence the electron localisation for the relatively low pulse intensity (less than 10¹⁴ W/cm²). However, our further results show that the ionisation effect becomes much more significant when increasing the pulse intensity, leading to a distinctly different mechanism responsible for the enhancement of the electron localisation.

Keywords:

• molecular dissociation
• electron localisation
• time-dependent Schrödinger equation

Additional information

Funding

This work was supported by the National Natural Science Foundation of China [grant number 11104092], [grant number 11004067].