Ultrafast nanooptics
Transfer of angular momentum by circularly polarized near fields (Elmers, Kreiter)
The aim of the experiment is to measure how effectively angular momentum can be transferred from the electromagnetic near field to the spin system of a probe particle which is first detected via spin-polarised photoemission. This methodology will be transferred to multi-photon effects in the ultrafast regime. Here, a key advantage of near field optics lies in a higher possible field strength before destruction of the sample, giving access to otherwise impossible experimental conditions.
Publications
Manipulating near field polarization beyond the diffraction limit
Appl. Phys. B 104 (2011) 65