Measuring Molecular Dynamics with Field-Resolved Infrared Spectroscopy

Abstract:

Ultrashort infrared pulses give us direct access to probe light-matter interactions, whether by exciting molecules to make them vibrate at specific frequencies, or driving ultrafast electron motion in semiconductors. Modern ultrafast laser sources now allow us to generate sub-cycle infrared light pulses with precise control over their electric-field waveforms. By measuring how these waveforms evolve in time after passing through a sample, we can reconstruct the molecular composition and structural dynamics of complex materials, a key tool for physical-chemistry and clinical diagnostics. However, capturing weak or fast-decaying vibrational signals remains difficult because the response quickly drops below the detection limit. Here, I will present the experimental techniques we use to pull these weak signals out of the background noise and extend the observable window for time-resolved infrared spectroscopy.

This seminar is hosted by Enrique Cánovas (Esta dirección de correo electrónico está siendo protegida contra los robots de spam. Necesita tener JavaScript habilitado para poder verlo.)

To get an assistance certificate for this seminar, register now and sign the assistance form during the seminar: https://docs.google.com/forms/d/e/1FAIpQLScP67AyOBfHk1o89GM2xj9yb070l4OG9KoIYyBfI41Q9p11nw/viewform?usp=publish-editor