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High-harmonic generation using multi-color light fields

Date Mo, 11.03.2013 - Mo, 11.03.2013
Time 16:45
Speaker Johan Mauritsson, Department of Physics, Atomic Physics, Lund University, Sweden
Location ETH Zurich, Hönggerberg Campus, HPF G-6
Program High-harmonic generation using multi-color light fields

Abstract: High-order harmonic generation (HHG) in gases has been established as an important technique for the generation of coherent extreme ultraviolet (XUV) pulses at ultrashort time scales. By tailoring the generating light field the HHG process can be controlled. Adding the second harmonic allows us to break the symmetry of the process and alter the periodicity, but also direction of the XUV pulses. If, instead, the third and fifth harmonics are added the periodicity is unaffected, but the efficiency can be greatly enhanced. Here we introduce a scheme based on using below-threshold harmonics, generated in a “seeding cell", to boost the HHG process in a “generation cell", placed further downstream in the focused laser beam.

Host: Jakob Wörner, Laboratorium für Physikalische Chemie, LPC
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