Wigner 121 Scientific Symposium

Session

Photonics

Sep 18, 2023, 3:40 PM

Budapest

Conveners

Photonics

• Chair: Miklós Veres

43. Wigner time delays and the quest to control electron and spin correlations

Martin Schultze (TU Graz)

9/18/23, 3:40 PM

Electrons have little mass and they are strongly interacting with their environment via Coulomb forces which led to their dynamics appearing perfectly synchronized to external stimuli. E.P. Wigner and colleagues anticipated already in the 1950's that in photoionization a time shift between the outgoing electronic wavepacket and the arrival time of the incoming photon is to be expected due to...

44. Ultrafast electron processes is solids

Péter Dombi (Wigner RCP)

9/18/23, 4:20 PM

Few-femtosecond laser pulses offer a unique potential to control various electron processes in solid-state media. These include the generation of hot electrons [1], inducing nonadiabatic tunneling photoemission [2] and inducing the transient metallization of dielectric media [3]. In my talk, I will review recent experimental progress of the Wigner Research Centre for Physics in each of these...

45. Sensitive Raman spectroscopy

Miklós Veres (Wigner RCP)

9/18/23, 4:40 PM

Being a non-invasive optical spectroscopic tool with high sensitivity to the bonding configuration Raman spectroscopy is widely used to study different materials, including organic and biological systems. Due to its small scattering cross-section, the Raman process is weak, however, it can be enhanced by metallic nanoparticles acting as plasmonic nanoantennas amplifying the Raman signal. This...