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Weak‐Field, Multiple‐Cycle Carrier Envelope Phase Effects in Laser Excitation
Author(s) -
Renziehausen Klaus,
Hader Kilian,
Jakubetz Werner,
Engel Volker
Publication year - 2013
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201200946
Subject(s) - carrier envelope phase , homonuclear molecule , excitation , diatomic molecule , laser , atomic physics , chemistry , fragmentation (computing) , wave packet , ultrashort pulse , pulse (music) , molecular physics , molecule , physics , optics , organic chemistry , quantum mechanics , detector , computer science , operating system
Although the absolute or carrier envelope phase (CEP) of a laser pulse is usually assumed to be effective for ultrashort and/or ultrastrong pulses only, it is demonstrated that these limitations can eventually be removed. Therefore, the excitation of a model positively charged homonuclear diatomic molecule, in which four electronic states are coupled by the laser field, is studied. In an initial step, nuclear wave packets in two dissociative states are prepared. Upon reaching the fragment channel, a weak pulse interacts with the system and prepares CEP‐dependent asymmetries associated with electron density localized on one or the other fragmentation product.