- Doubly resonant sum-frequency generation (DRSFG) spectroscopy
Recently, sum-frequency generation (SFG) spectroscopy has attracted much attention due to its intrinsic surface-specific properties.
Sum-frequency generation spectroscopy is a second order nonlinear optical technique in which two laser beams with different frequencies are pulsed simultaneously into a matter and a light at the sum frequency is generated.
Usually, one of the two input laser beams is in infrared (IR) region, while the other is in ultra-violet (UV) or visible region.
Now, in laboratory, it is possible to have both input laser beams tunable and get doubly-resonant sum-frequency generation spectroscopy.
The purpose of this project is to simulate doubly-resonant sum-frequency generation spectroscopies of materials on surfaces or at interfaces through quantum chemistry modelling and then to understand the interactions between adsorbates and surfaces.
