Dynamical origin of below-threshold harmonic generation of diatomic molecules
Journal
Journal of Physics: Conference Series
Journal Volume
1412
Journal Issue
8
Start Page
082004
ISSN
1742-6588
1742-6596
Date Issued
2020-01-01
Author(s)
Abstract
We present an ab initio quantum study of below-threshold harmonic generation (BTHG) from H2 + molecules in the presence of an intense laser field by solving the time-dependent Schrödinger equation accurately in space and time. We find that multiple channels contribute to BTHG of H2 + molecules, which are related to the electron driven initially at specific time of the laser pulse from one nuclear core to another nuclear core or back to the parent core itself. The distinct contributions of these channels are distinguished by using a novel synchro squeezing time-frequency analysis.
SDGs
Publisher
IOP Publishing
Type
journal article