Abstract
Few-optical-cycle pulses with high-peak intensity and controlled electric field can be used for the generation of isolated attosecond pulses, employing the ionization gating technique. The temporal reshaping of the electric field of the driving pulses, induced by propagation in a highly ionized gas cell, can be used to control the electron quantum paths, which contribute to the process of high-order harmonic generation. The peculiar effects produced on the generation process by temporal reshaping of the driving field, are investigated by using the nonadiabatic saddle-point method. In particular, a complete spectral tunability of the harmonic emission is understood upon considering the effects of driving pulse distortions on the phase of the relevant electron quantum paths.
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Acknowledgements
The research leading to the results presented in this paper has received funding from the European Research Council under the European Community’s Seventh Framework Programme (FP7/2007-2013)/ERC grant agreement n. 227355-ELYCHE. We acknowledge financial support from the Italian Ministry of Research (FIRB-IDEAS RBID08CRXK), support from European Union within contract n. 228334 JRA-ALADIN (Laserlab Europe II) and from MC-RTN ATTOFEL (FP7-238362).
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Calegari, F. et al. (2012). Ionization Gating for the Generation of Tunable XUV Radiation and Isolated Attosecond Pulses. In: Yamanouchi, K., Katsumi, M. (eds) Multiphoton Processes and Attosecond Physics. Springer Proceedings in Physics, vol 125. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-28948-4_15
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DOI: https://doi.org/10.1007/978-3-642-28948-4_15
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