Description
Micropillar cavities are versatile nanophotonic structures for locally enhancing light-matter interaction due to their high quality factors, low mode volumes, and clean free-space optical interface. These qualities have facilitated the successful application of micropillars as efficient single photon sources, for cavity QED strong coupling, and diode lasers. We present here frequency- and time-resolved pump-probe experiments of a single GaAs/AlAs micropillar cavity with a diameter of 6 µm studying the dynamics of the cavity resonance. All-optical switching is achieved by excitation of free carriers. We observe a simultaneous shift of two different transverse modes in the micropillar. The high-resolution frequency time traces of the resonances show a strongly non-exponential relaxation dynamics [1]. We interpret this with a second-order mechanism including the radiative recombination of electron and holes and a slow free carrier trapping time.| Period | 20 Mar 2015 |
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| Event title | DPG Frühjahrstagung 2015 Berlin: (DPG Spring Meeting) |
| Event type | Conference |
| Organiser | Deutsche Physikalische Gesellschaft |
| Location | Berlin, GermanyShow on map |
| Degree of Recognition | International |
Keywords
- METIS-310233