7-11 July 2014
Africa/Johannesburg timezone
<a href="http://events.saip.org.za/internalPage.py?pageId=16&confId=34"><font color=#0000ff>SAIP2014 Proceedings published on 17 April 2015</font></a>

Ptychographic reconstruction of temporal objects

8 Jul 2014, 14:40
20m
D Les 102

D Les 102

Oral Presentation Track C - Photonics Photonics

Speaker

Mr Dirk-Mathys Spangenberg (University of Stellenbosch)

Level for award<br>&nbsp;(Hons, MSc, <br> &nbsp; PhD)?

PhD

Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?

No

Apply to be<br> considered for a student <br> &nbsp; award (Yes / No)?

yes

Abstract content <br> &nbsp; (Max 300 words)<br><a href="http://events.saip.org.za/getFile.py/access?resId=0&materialId=0&confId=34" target="_blank">Formatting &<br>Special chars</a>

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.

Main supervisor (name and email)<br>and his / her institution

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

Primary author

Mr Dirk-Mathys Spangenberg (University of Stellenbosch)

Co-authors

Prof. Erich Rohwer (University of Stellenbosch) Dr Pieter Neethling (University of Stellenbosch) Prof. Thomas Feurer (University of Bern)

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