Program

P.8 -- Poster, NCTP-40

Date: Monday, 27 July 2015

Time: 14h00 - 15h30

probing nuclear vibration of $H_{2}^{+}$ using high-order harmonic generation

Le Thi Thanh Thuy (1), Phan Thi Ngoc Loan (2), Nguyen Ngoc Ty (3)

(1) student at Ho Chi Minh City University of Education, (2) (3) Lecturer at Ho Chi Minh City University of Education, Department of Physics, 280 An Duong Vuong Street, District 5, Ho Chi Minh City

From the numerical solution of the time-dependent Schrödinger equation, we caculate the high-order harmonic generation (HHG) spectra of $H_{2}^{+}$, interacting with ultrashort intense laser pulses. Molecular nucleivibrate with a superposition of individual vibrational states populated according to Franck-Condon distribution. We point out the possibility of probing the nuclear vibration using HHG. The results show that the intensity of HHG is correlated with the time delay, and it is strongly determined not only by the molecular configuration but also by the initial velocity of nuclei. When the internuclear separation takes the equilirium value and nuclei are moving closer together, intensity of HHG is enhanced. But, with the same initial internuclear separation with the opposite direction of nuclear velocity, the intensity of HHG is reduced.

Presenter: Lê Thị Thanh Thủy