Berlin 2018 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 26: Ultra-fast phenomena
HL 26.4: Vortrag
Mittwoch, 14. März 2018, 10:15–10:30, EW 202
High-harmonic generation from tailored solid targets — •Murat Sivis1,2, Marco Taucer2, Kyle Johnston2, Giulio Vampa2, André Staudte2, Andrei. Yu. Naumov2, David. M. Villeneuve2, Paul B. Corkum2, and Claus Ropers1 — 14th Physical Institute - Solids and Nanostructures, Georg-August University, Göttingen, Germany — 2National Research Council of Canada and University of Ottawa, Ottawa, Canada.
In recent years, high-harmonic generation (HHG) in semiconductor and dielectric crystals has enabled new all-optical means to investigate solid-state matter [1,2]. On the other hand, solid targets offer unique opportunities to develop novel types of sources for coherent extreme-ultraviolet radiation with tailored wave fields. Here, we present a study on high-harmonic generation in locally modified zinc oxide and silicon targets driven by femtosecond laser pulses at 2 µm central wavelength [3]. We demonstrate how the local intensity, polarization and phase of the generated radiation (up to the ninth harmonic order of the fundamental) can be controlled by changing the structural and chemical composition of the target. Our results indicate unprecedented means to link high-harmonic generation with optoelectronics, suggesting solid-target HHG as an all-optical probe for ultrafast dynamics on the nanoscale.
1 S. Ghimire, et al. Nat. Phys. 7, 138-141 (2011).
2 G. Vampa,et al. Nature 522, 462-464 (2015).
3 M. Sivis et al. Science 357, 303-306 (2017).