"High resolution spectroscopy of semiconductor quantum dot using Fabry-Perot interferometer" |
| TYPE | Special Seminar - Solid State Institute, Technion |
| Speaker: | Mr. Dan Cogan |
| Affiliation: | Physics Department and Solid State Institute, Technion |
| Date: | 23.10.2013 |
| Time: | 12:30 |
| Location: | Solid State Auditorium(Entrance) |
| Remark: | M.Sc. Student of Professor David Gershoni |
| Abstract: | I will present experimental studies of optical transitions in single semiconductor quantum dots using Fabry Perot interferometer permitting spectral resolution which is better than the radiative width of these transitions (~1 µeV ). I will discuss the operation principles of the interferometer and considerations in its design and fabrication. The measured width of various optical transitions will be presented and spectral broadening mechanisms such as spectral diffusion and power broadening will be discussed. Finally, I will present nuclear polarization using resonant excitation by circularly polarized light in the absence of any external magnetic field (Overhauser effect) and discuss its origin and quantitative characterization. |