Sub-cycle waveform synthesis for effective control of electron localization

We have proposed and demonstrated an effective scheme to steer both the electronic and molecular motions of hydrogen molecule and its isotopes. Our scheme lies in the idea of sub-cycle waveform shaping (SWS) with synthesizing coherent IR pulses of different wavelengths. The quantum model simulation indicates a remarkable enhancement of the electron localization asymmetry compared with the few-cycle pulse. 68% and 89% electrons of the dissociating fragmentation can be localized to one nucleus for H_2^+ and H_2, respectively.