Time resolved Raman spectroscopy system
Final Report Abstract
The Time Resolved Raman (TiReRa) spectrometer has shown to be a highly versatile and novel approach to phonon and electronic dynamics in condensed matter. Experiments performed with the TiReRa system have shown that one can reveal the transient phonon population in semiconductors, carbon nanoribbons, and two dimensional chalcogenides. Using resonant Raman phenomena, TiReRa can also track the electron population dynamics, including heavy-light hole band scattering in Si as well as exciton dynamics in carbon nanoribbons. The experiments on silicon showed that one can optically control the Fano resonance behaviour or the phonon Raman response, and that one can study phonon-populations away from the zone center of the Brillouin zone using two particle Raman scattering. Finally, TiReRa has shown to be very useful in studies of the dynamic order parameter behaviour in antiferromagnetic and chiral magnetic materials which do not show a macroscopic net magnetization.
