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Hannover 2010 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 61: Ultrashort Laser Pulses: Applications IV

Q 61.6: Vortrag

Freitag, 12. März 2010, 11:45–12:00, F 342

Towards Nanostructure-Enhanced High-Harmonic Generation — •Murat Sivis1, Katrin Siefermann2, Yaxing Liu2, Bernd Abel2,3, and Claus Ropers11University of Göttingen, Courant Research Center Nano-Spectroscopy and X-Ray Imaging, Friedrich- Hund-Platz 1, D-37077 Göttingen, Germany — 2University of Göttingen, Department of Physical Chemistry, Tammannstr. 6, D-37077 Göttingen, Germany — 3University of Leipzig, Wilhelm-Ostwald-Institute for Physical and Theoretical Chemistry, Linnestr. 2, D-04103 Leipzig, Germany

Recent efforts to utilize optical field enhancements in metallic nanostructures for high-harmonic generation (HHG) have generated significant interest [S. Kim et al., Nature 453, 575 (2008)]. Using local plasmon resonances, the threshold for HHG can be substantially reduced, allowing for HHG by using unamplified few femtosecond laser oscillators. To date, rather limited information on the characteristics and scaling behavior of the relevant processes is available. Here, we present the first results of our study on harmonic generation with metallic nanostructures in the presence of a noble gas jet. We demonstrate the significant enhancement of harmonic generation of low orders. Experimental limitations and prospects of the approach are discussed.

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