Daily human life is inseparable from the development of technology, which is built on an understanding of the molecular world. Every object used daily, from medicines to gadgets, involves manipulation of matter at the atomic and molecular levels, which is very relevant to daily life.
The interaction of pulsed lasers and gas molecules is a major theme in physics with very broad applications. This was conveyed by Dr. rer. nat. Abdurrouf, S.Si., M.Si, a new professor from the Faculty of Mathematics and Natural Sciences when he was inaugurated on Thursday (11/28/2024).
According to Abdurrouf, the type of interaction between laser and molecules in the gas phase depends on the energy and duration of the laser. The interaction between the two can be in the form of perturbation. “Even more complex interactions such as non-sequential double ionization (NSDI), dissociation, or high harmonic generation (HHG) may occur,” he explained.
To understand how high harmonic signals can be used to detect and characterize the level of molecular alignment, Rouf developed an adiabatic model of the adiabatic intense-field theory (AIFT).
AIFT has successfully explained almost all experimental phenomena related to the generation of high harmonic signals in aligned molecules. AIFT can also be used to calculate high harmonic signals from molecules aligned with long pulses that are suddenly turned off, calculate deposit energy in gases, determine pulse intensity and gas jet temperature, and reconstruct molecular orbitals.
It is hoped that AIFT can be used as an initial step to build a theory about the generation of high harmonic signals in molecules other than gases. It is also interesting to apply AIFT+FM, to thermal systems or systems distorted by external fields, both static fields and dynamic intense laser fields. It is hoped that this combination can contribute to the development of science and technology in Indonesia.
Abdurrouf is the 29th professor at FMIPA. He was inaugurated as a professor in the field of Theoretical Physics and Molecular Computation. (VQ/UB PR/ Trans. Iir)
