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Ptychography

Date Do, 01.05.2014 - 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.
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Link www.iap.unibe.ch
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