TOPTIER CNS Summer School 2025

Real-time monitoring nuclear motion using high-order harmonic generation

26 Aug 2025, 16:16

12m

oral presentation Young Scientist Session 3

Speaker

An Trieu (Institute of Fundamental and Applied Sciences, Duy Tan Univeristy, Vietnam)

Description

Nuclear motion in molecules can be monitored in real time by using the combination of two laser pulses, one for initializing the interest dynamics and one for exciting the molecule to emiss the high-frequency photons, which is also known as high-order harmonic generation (HHG). In this work, we study the possibility of using HHG to monitor the movement of hydrogen nucleus in the dissociative process of H2 molecule and isomerization of HCN/HNC. Within adiabtic approximation, the nuclear and electronic motions are treated separately and simulated by solving the time-dependent Schrodinger equation. The results show the significant changes in HHG spectra versus the movement of H nucleus in the interest processes, proving for the possibility of using HHG to monitor molecular dynamics in real time. The project is still ongoing.