Cavity-enhanced ultrafast spectroscopy (NOTE: special time)




Nicolaus Copernicus University in Toruń

March 31, 2021 1:30 PM

Ultrafast optical spectroscopy techniques, such as transient absorption spectroscopy or two-dimensional infrared spectroscopy, are widely used to probe structure and dynamics of molecules and larger biomolecular systems. However, they are typically restricted to strongly absorbing samples, such as solids or liquid solutions. Compared to gas-phase measurements, a solvent environment is thought to strongly influence molecular dynamics, making accurate theoretical comparisons difficult. To bridge the gap between theory and experiment, we have been developing ultrafast and ultrasensitive measurement techniques that provide nearly four orders of magnitude better sensitivity than the previous state of the art. During the talk, I will describe the physical principles behind our measurements, some of our results and our dream experiments which are yet to be realized.