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Ionization and absorption effects in high-order harmonic generation in gas-filled hollow fibers

Published online by Cambridge University Press:  30 July 2001

A.N. NAUMOV
Affiliation:
International Laser Center, Faculty of Physics, Moscow State University, Vorob'evy gory, Moscow 119899, Russia
A.M. ZHELTIKOV
Affiliation:
International Laser Center, Faculty of Physics, Moscow State University, Vorob'evy gory, Moscow 119899, Russia
A.B. FEDOTOV
Affiliation:
International Laser Center, Faculty of Physics, Moscow State University, Vorob'evy gory, Moscow 119899, Russia
D.A. SIDOROV-BIRYUKOV
Affiliation:
International Laser Center, Faculty of Physics, Moscow State University, Vorob'evy gory, Moscow 119899, Russia
A.P. TARASEVITCH
Affiliation:
Institut für Laser- und Plasmaphysik, Universität Essen, Essen D-45117, Germany
PING ZHOU
Affiliation:
Institut für Laser- und Plasmaphysik, Universität Essen, Essen D-45117, Germany
D. VON DER LINDE
Affiliation:
Institut für Laser- und Plasmaphysik, Universität Essen, Essen D-45117, Germany

Abstract

The influence of absorption and ionization on high-order harmonic generation in a gas-filled hollow fiber is analyzed within the framework of slowly varying envelope approximation. Harmonic spectra and pressure dependencies are calculated for high-order harmonic generation in hollow fibers filled with different rare gases. Ionization of the gas filling the fiber gives rise to self-phase modulation of the pump pulse, changing the phase mismatch within the pump pulse and shifting the maxima in pressure dependencies of high-order harmonics.

Type
Research Article
Copyright
© 2001 Cambridge University Press

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