Characteristics of harmonics generated by oblique incidence of a relativistic laser beam on an inhomogeneous plasma
Andreev A. A. 1,2, Platonov K. Yu. 3
1St. Petersburg State University, St. Petersburg, Russia
2Ioffe Institute, St. Petersburg, Russia
3Peter the Great Saint-Petersburg Polytechnic University, St. Petersburg, Russia
Email: konstantin_platonov@yahoo.com
Self-consistent focusing of high harmonics of a relativistic intensity femtosecond laser pulse reflected from a plasma surface is considered. The studied harmonics are summed into a sequence of short intense pulses (attopulses). The plasma parameters (density, inhomogeneity scale) and the laser pulse (intensity, transverse profile) necessary to obtain a given focusing distance of attopulses are determined. The radius of the focusing spot and the intensity of attopulses at the focal point are determined. Keywords: super strong laser fields, attopulses, self-focusing.
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