Program

P.64 -- Poster, NCTP-41

Date: Wednesday, 3 August 2016

Time: 08h30 - 10h00

The orientation dependence of high-order harmonic generation and ionization probability of H2+ considering the nuclear vibration

Phan Thi Ngoc Loan (1), Tran Ai Nhan (1), Le Nguyen Minh Phuong (1), Tran Tuan Anh (2)

(1) Hochiminh City University of Pedagogy; (2) Hochiminh City University of Technology and Education

We investigate the dependence on the molecular orientation of high-order harmonic generation (HHG) and ionization probability by numerically solving the time-dependent Schrödinger equation of vibrating molecule exposed to an intense laser pulse. The results show that with nuclear motion, the intensity of HHG spectrum is minimized at the harmonic order less than that in case of fixed nuclear. The stronger the nuclei vibrate, the higher the orientation angle of the minimum is. Besides, the HHG intensity undergoes a minimum with increasing the orientation angle. In addition, at this “critical orientation angle”, the phase of harmonic of vibrating molecule undergoes a jump by about Pi radian. The ionization probability decreases with increasing the orientation angle.

Presenter: Phan Thi Ngoc Loan