外文题目: Wavelength and intensity effects on the dissociation of H-2(+) in intense laser fields
作者: Hu, Hongtao; Xu, Han; Bai, Ya; Sang, R. T.; Litvinyuk, Igor V.; Liu, Peng; Li, Ruxin
刊名: Phys. Rev. A
年: 2016 卷: 94 期: 5 文章编号：53415
英文关键词:

ABOVE-THRESHOLD-DISSOCIATION; PROBING MOLECULAR-DYNAMICS; COULOMB EXPLOSION; ENHANCED IONIZATION; PULSES; IONS; PHOTODISSOCIATION; FEMTOSECOND; 2-COLOR; H-2+
英文摘要:
We report on a systematic investigation of the dissociation dynamics of H-2(+) in intense laser fields, and study how the kinetic energy spectrum of the dissociating proton can be modulated by the wavelength and intensity of the driving laser field. In the experiment, H-2 is dissociatively ionized by an intense laser pulse with varying carrier wavelengths ranging from 800 to 1800 nm and varying peak intensities. A model based on Floquet theory and Landau-Zener theory is adopted to explain the experimental observations. The intensity effect is further explored in a few-cycle pump-probe experiment. We observed a significant intensity-dependent proton kinetic energy shift, which can also be well explained by the theoretical simulation. The wavelength- and intensity-dependent proton spectra reveal the mechanism of selective excitation of vibrational levels of H-2(+) in intense laser fields.


文献类型: 期刊论文
正文语种: English
收录类别: SCIEI
DOI: 10.1103/PhysRevA.94.053415


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