Quantum Optoelectronics
Group Leaders:
The dynamics of photoexcited electrons and holes can be measured on the timescale of ~100fs by using ultrafast optical spectroscopy. The carriers interact strongly with each other to form a hot plasma, which then cools by interacting with the lattice. In experiments we make real-time measurements of fundamental optical properties such as absorption and luminescence using pulses generated by modelocked lasers. These measurements are important from a fundamental point of view, since they provide basic information about electron-electron and electron-phonon interactions, and they are of great practical significance since the speed of these processes limits the speed ultimately obtainable in electronic and opto-electronic devices.
