Regensburg 2013 – scientific programme

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BP: Fachverband Biologische Physik

BP 10: Posters: Imaging

BP 10.9: Poster

Monday, March 11, 2013, 17:30–19:30, Poster B2

High Harmonic Generation For Coherent Diffractive Imaging — •Sergey Zayko¹, Eike Mönnich¹, Murat Sivis¹, Tobias Mey³, Dong-du Mai², Klaus Mann³, Tim Salditt², and Claus Ropers¹ — ¹Materials Physics Institute and Courant Research Centre, University of Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen — ²Institute fo X-ray Physics. University of Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen — ³Laser-Laboratorium Göttingen e.V. (LLG) Hans-Adolf-Krebs-Weg 1 37077 Göttingen

Light sources based on high harmonic generation (HHG) open up the possibility to achieve coherent ultra-short high energy pulses up to the soft x-ray regime in a tabletop setup. Here, we present an implementation and characterization of a compact HHG setup to perform coherent diffractive imaging (CDI) and pump-probe spectroscopy with femtosecond temporal resolution. Coherent pulses up to the 51st harmonic order corresponding to 80 eV photon energy have been obtained.

The degree of spatial coherence and the optical wavefront of high harmonics were characterized. As a proof-of-concept, a test pattern with 170 nm feature size structured by focused ion beam milling was imaged by CDI at a wavelength of 32 nm.