Open AccessEnhanced narrow-bandwidth emission during high-order harmonic generation from aligned molecules
Author(s) -
Chaojin Zhang,
Jinping Yao,
Fadhil A. Umran,
Jielei Ni,
Bin Zeng,
Guihua Liu,
Di Lin
Publication year - 2013
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.21.003259
Subject(s) - high harmonic generation , optics , laser , molecular orbital , bandwidth (computing) , physics , atomic orbital , second harmonic generation , atomic physics , molecular physics , materials science , molecule , electron , computer network , quantum mechanics , computer science
We theoretically investigate the selective enhancement of high-harmonic generation (HHG) in a small spectral range when an orthogonal-polarized two-color laser field interacts with aligned O(2) molecules. It is shown clearly that the enhanced narrow-bandwidth emission near the cutoff of the HHG spectrum can be effectively controlled by the molecular alignment angle, laser intensity and the relative phase of two-color laser fields. Furthermore, the strong dependence of narrow-bandwidth HHG on molecular alignment angle indicates that it encodes information about O(2) molecular orbitals, so it may be an alternative method for reconstruction of O(2) molecular orbitals.