Program

O.11 -- Oral, NCTP-41

Date: Monday, 1 August 2016

Time: 16h40 - 17h00

High-order harmonic generation by using single-active electron model potential

Le Thi Cam Tu (1), Hoang Van Hung (2), Le Van Hoang (2)

(1) Sai Gon University, 273 An Duong Vuong Street, District 5, Ho Chi Minh City (2) Ho Chi Minh City University of Pedagogy, 280 An Duong Vuong Street, District 5, Ho Chi Minh City

The study of high-order harmonic generation (HHG) from molecules is a subject of much current interest of science. To explain the features of the HHG, some methods of ab initial calculations are introduced, such asthe time-dependent density functional theory (TDDFT), the time-dependent Hartree-Fock method (TDHF). In our work, we develop an alternative method to calculate HHG spectra for molecules within the single-active-electron (SAE) approximation. Firstly,the single-active-electron potential of a molecule CO2is constructed with using the initial wave function obtained from GAUSSIAN 03. Secondly, the time-dependent Schrodinger equation of the molecule interacted with the ultrashort laser pulses is solved numerically by the split-operator method. Then, the HHG spectra for different alignment angles are calculated and compared to those of other numerical calculations. Using the obtained data of HHG, we analyze the possibility of extracting the structural information of CO2 by applyingthe electron interference effect.

Presenter: Le Thi Cam Tu