7-11 July 2014
Africa/Johannesburg timezone
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Ptychographic reconstruction of temporal objects

Presented by Mr. Dirk-Mathys SPANGENBERG on 8 Jul 2014 from 14:40 to 15:00
Type: Oral Presentation
Session: Photonics
Track: Track C - Photonics

Abstract

Ptychography a technique used in the X-ray regime to reconstruct objects in space with atomic scale resolution by recording the far field diffraction patterns after translating either the illumination source with respect to the object or the object itself can be readily applied in the optical regime to reconstruct so called temporal objects by interacting a temporal object with a probe pulse in a sample. The spectrum is recorded after shifting the probe pulse in time. In the analogy, the recorded spectra is equivalent to the recorded far field diffraction pattern and the temporal shift is equivalent to the translation of the object or beam. The novelty of this technique is that one is able to resolve detail of the temporal object which is much shorter than the probe pulse. We present the ptychographic iterative method for reconstruction in the optical regime and show the results from our experiments.

Award

yes

Level

PhD

Supervisor

Erich Rohwer, egr@sun.ac.za, University of Stellenbosch

Paper

No

Place

Room: D Les 102


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