Elucidating the origins of multimode vibrational coherences of polyatomic molecules induced by intense laser fields.

ABSTRACT: Strong-field laser-molecule interaction forms much of the basis for initiating and probing ultrafast quantum dynamics. Previous studies aimed at elucidating the origins of vibrational coherences induced by intense laser fields have been confined to diatomic molecules. Furthermore, in all cases examined to date, vibrational wave packet motion is found to be induced by R-selective depletion; wave packet motion launched by bond softening, though theoretically predicted, remains hitherto unobserved. Here we employ the exquisite sensitivity of femtosecond extreme ultraviolet absorption spectroscopy to sub-picometer structural changes to observe both bond softening-induced vibrational wave packets, launched by the interaction of intense laser pulses with iodomethane, as well as multimode vibrati

SUBMITTER: Wei Z 

PROVIDER: S-EPMC5622070 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature