Abstract
While femtosecond (fs) light pulses have served the field of ultrafast phenomena addressing mainly the nuclear dynamics in all states of matter, the attosecond (asec) pulses has provided direct experimental access to ultrafast electron dynamics. However, there are processes involving nuclear motion in molecules and in particular coupled electronic and nuclear motion that possess few-fs or even sub-fs dynamics. In this work we have succeeded in addressing simultaneously vibrational and electronic dynamics in molecular Hydrogen [1]. Utilizing a broadband XUV continuum the entire, Frank-Condon allowed spectrum of H2 is coherently excited. Vibrational, electronic and ionization 1-fs scale dynamics are subsequently tracked by means of XUV-pump-XUV-probe measurements. These reflect the intrinsic molecular behaviour as the XUV probe pulse hardly distorts the molecular potential.
© 2015 IEEE
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