Conveners
TERA (THz/IR scientific case)
- Stefano Lupi (Sapienza University and INFN)
In a wide range of electromagnetic wave, THz and/or FIR region has both two different aspects such as high-frequency radio waves and low-energy light. From the viewpoint of radio waves, terahertz waves are composed of alternating electromagnetic fields with a period of about ps. Meanwhile, FIR light is a photon comparable to the energy scales of Drude response of free carriers in metals,...
In this talk, I will give an overview of some of the THz activities carried on in two main laboratories in Sapienza University and respectively located at the SBAI and Physics departments. Together the laboratories present state-of-the-art “compact” THz technology working both in the frequency and time domain. In the frequency domain a high-resolution coherent detection spectrometer exploiting...
We investigate the carrier dynamics in graphene utilizing the free-electron laser FELBE as a source of low-energy photons. Polarization resolved pump-probe experiments with linearly polarized radiation allow us to disentangle the role of electron-electron scattering and scattering of electrons with optical phonons. Applying magnetic fields perpendicular to the graphene layers results in a...
