Open AccessAlignment structures of rotational wavepacket created by two strong femtosecond laser pulses
Author(s) -
Hongyan Jiang,
Chengyin Wu,
He Zhang,
Hongbing Jiang,
Hong Yang,
Qihuang Gong
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.008990
Subject(s) - femtosecond , superposition principle , optics , wave packet , laser , physics , coupling (piping) , materials science , atomic physics , quantum mechanics , metallurgy
We experimentally and theoretically study the alignment structures of the rotational wavepacket created by linear molecules and two strong femtosecond laser pulses. In the experiment, we observe that the alignment structures depend on the time delay between the two laser pulses. In the theory, we find that the alignment structures are composed of the self-coupling term and the cross-coupling term. The contributions of these two terms are separately calculated. Their coherent superposition reproduces the alignment structures observed in the experiment.