Open AccessRetrieval of molecular alignment and identification of multiple-orbital contribution by using polarized high harmonics from aligned N2 molecules
Author(s) -
Xiaoli Guo,
Cheng Jin,
Ziqiang He,
Jinping Yao,
Xiaoxin Zhou,
Ya Cheng
Publication year - 2021
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.412692
Subject(s) - harmonics , optics , physics , high harmonic generation , harmonic , laser , atomic orbital , interference (communication) , perpendicular , molecular orbital , intensity (physics) , harmonic analysis , molecule , atomic physics , materials science , electron , quantum mechanics , telecommunications , channel (broadcasting) , mathematical analysis , geometry , mathematics , voltage , computer science
With the parallel and perpendicular components of high harmonics generated by using aligned N 2 molecules, we propose a method to retrieve the alignment distribution induced by the aligning laser based on the quantitative rescattering theory. And the intensity of pump laser and gas temperature can be precisely determined as well. We find that the intensity ratio between two harmonic components is very sensitive to the inclusion of multiple-orbital contribution in the theory. We thus suggest that it could be used to identify the interference from inner orbitals by tuning input laser power or extending the spectral region of high harmonics.