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A simple model of high harmonic generation in a plasma

Published online by Cambridge University Press:  09 April 2001

S. NUZZO ,
M. ZARCONE ,
G. FERRANTE  and
S. BASILE
S. NUZZO
Affiliation:
Istituto Nazionale di Fisica della Materia and Dipartimento di Scienze Fisiche ed Astronomiche, Università degli Studi di Palermo, Via Archirafi 36, 90123 Palermo, Italy
M. ZARCONE
Affiliation:
Istituto Nazionale di Fisica della Materia and Dipartimento di Fisica e Tecnologie Relative, Università degli Studi di Palermo, Viale delle Scienze, 90128 Palermo, Italy
G. FERRANTE
Affiliation:
Istituto Nazionale di Fisica della Materia and Dipartimento di Fisica e Tecnologie Relative, Università degli Studi di Palermo, Viale delle Scienze, 90128 Palermo, Italy
S. BASILE
Affiliation:
Istituto Nazionale di Fisica della Materia and Dipartimento di Fisica e Tecnologie Relative, Università degli Studi di Palermo, Viale delle Scienze, 90128 Palermo, Italy
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Abstract

We apply the average electron model to describe high harmonic generation in a collisional plasma in a laser field. The model is based on the coupled kinetic equations for electron velocity and electron temperature. The harmonic intensities are obtained from the Fourier coefficients of the nonlinear part of the electron velocity. Numerical calculations are reported for both strongly and weakly ionized plasmas in the nonstationary regime. We show the role of collisions frequencies as well as of quiver and thermal velocities in the harmonic generation efficiency.

Type
ULIA-1 CONFERENCE PAPERS
Information
Laser and Particle Beams , Volume 18 , Issue 3 , July 2000 , pp. 483 - 487
Copyright
© 2000 Cambridge University Press

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