PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
Intense Terahertz (THz) pulses offer a unique way to manipulate matter on a sub-picosecond timescale. Their strong electric and magnetic field components efficiently couple to low-energy degrees of freedom like optical phonons or magnons while we can simultaneously use ultrafast probe techniques to monitor changes in the sample with femtosecond resolution. This allows us to study novel nonequilibrium phases and the response of matter to strong transient fields. I will give a brief overview over THz experiments at the LCLS and how we can probe changes in properties like ferroelectricity, magnetism or orbital order with femtosecond x-ray pulses. I will specifically focus on nonlinear phonon dynamics and discuss recent results on SrTiO3 where we observed strong nonlinearity of the soft phonon mode and the transfer of energy to higher frequency vibrational modes.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.