Ptychography
Date | Do, 01.05.2014 | |
Time | 10.15 | |
Speaker | Prof. Dr. Thomas Feurer, Institute of Applied Physics, University of Bern | |
Location | Universität Bern, Institut für Angewandte Physik, Gebäude exakte Wissenschaften, Hörsaal B116, Sidlerstrasse 5, 3012 Bern | |
Program | Through dedicated measurements in the optical regime we demonstrate that ptychography can be applied to reconstruct complex valued object functions that vary with time from a sequence of spectral measurements. A probe pulse of approximately 1 ps duration, time delayed in increments of 0.25 ps is shown to recover dynamics on a ten times faster time scale with an experimental limit of approximately 5 fs. This opens up numerous new probing concepts in nonlinear spectroscopy or in the reconstruction of aperiodic objects with atomic scale spatial and temporal resolution. | |
Link | www.iap.unibe.ch |