Program

P.62 -- Poster, NCTP-42

Date: Wednesday, 2 August 2017

Time: 08h30 - 10h00

High-order harmonic generation from excited hydrogen molecular ion

PHI-HUNG TRAN, VAN-HUNG HOANG, NGOC-LOAN PHAN

Department of Physics, Ho Chi Minh City University of Education

High-order harmonic generation (HHG) spectra emitted from hydrogen molecular ion prepared in the ground and the two first exicited states are systematically studied by numerically solving time dependent Schrödinger equation. We demonstrate that the ratio of HHG intensity from these three lowest states is strongly sensitive to the intensity of the laser field. Importantly, influence of ionization probability and depletion phenomenon HHG are also analyzed. We have showed a closely relation between the HHG efficiency and the quantity $\gamma (t)$ , which is proportional to the recombination process. Beside, the depletion effect also leads to reducing the cutoff frequency from its prediction in HHG spectra by threestep-model model.

Presenter: Phan Thi Ngoc Loan