Applications of molecular theory of sum-frequency generations to study molecular chirality
Journal
Journal of Physical Chemistry A
Journal Volume
108
Journal Issue
39
Pages
8058-8076
Date Issued
2004
Author(s)
Abstract
Theoretical expressions for sum-frequency generation (SFG) signals, which can be applied to treat various SFG experiments, have been derived. We have applied the theoretical results to study the SFG experiments for the near-electronic resonant, singly resonant IR−UV, and doubly resonant IR−UV cases that are associated with the measurements reported by Shen's group. We have taken into account both the electric and magnetic dipole interactions and the applied laser and detection polarization combinations explicitly. Relationships between the polarization combinations and the electric-dipole−electric-dipole mechanism, the electric-dipole−magnetic-dipole mechanism, the magnetic-dipole−electric-dipole mechanism, and the magnetic-dipole−magnetic-dipole mechanisms are clarified. Based on the theoretical results, near-electronic resonant SFG, singly resonant IR−UV SFG, doubly resonant IR SFG experiments are discussed.
Type
journal article