THz-driven streak camera based on giant field enhancement in split-ring resonators
Date | Do, 16.05.2013 | |
Time | 10.15 | |
Speaker | Justyna Fabianska, Institute of Applied Physics, University of Bern | |
Location | Universität Bern, Institut für Angewandte Physik, Gebäude exakte Wissenschaften, Hörsaal B116, Sidlerstrasse 5, 3012 Bern | |
Program | Split-ring resonators (SRRs) featuring nano-gaps exhibit strong field enhancement in the gap region due to light-induced current flows and capacitive charging across the gap. The resonant behaviour of the SRR leads to narrowband amplification and results in significant field enhancement factors reaching values as high as 5000. This facilitates a large variety of THz strong field experiments even with modest THz sources. An interesting route to pursue is the manipulation of electron trajectories. Here, one particular application of SRRs in streak cameras will be presented. Streak cameras are known to be the fastest detectors to directly measure ultra-fast light phenomena. I will discuss a THz-driven streak camera, which, at least in simulations, shows the fastest response ever, namely around 1 fs. | |
Link | www.iap.unibe.ch |