摘要
We present a scheme to control the generated ultrafast magnetic field in H_(3)^(2+)molecules using multi-frequency tricircular pulses composed of co-and counter-rotating bicircular pulses.Simulations show that the field amplitude and the wavelength are two significant factors for magnetic field generation by tricircular pulses.Specifically,the strength of the magnetic field is linearly related to the field amplitude atλ_(0)=50 nm,while atλ_(0)=70 nm,the strength first increases and then decreases with the amplitude,this can be attributed to the resonance between the ground and excited states.Moreover,the phase and helicity of bicircular pulses are shown to have important effects on the magnetic field.The dependence of the magnetic field on the phase arises from the interference effect between multiple ionization pathways.These findings illustrate a guiding principle for controlling the magnetic field in molecular systems for future research in ultrafast magneto-optics.
作者
徐清芸
何永林
杨志杰
雷志仙
闫淑娟
刘学深
郭静
Qing-Yun Xu;Yong-Lin He;Zhi-Jie Yang;Zhi-Xian Lei;Shu-Juan Yan;Xue-Shen Liu;Jing Guo(Institute of Atomic and Molecular Physics,Jilin University,Changchun 130012,China)
基金
the National Natural Science Foundation of China(Grant No.12074146).
