Abstract
A modification of the plasma beat-wave excitation scheme is proposed, aimed at a significant increase of the resulting plasma wave amplitude. The modification employs two laser beams with a down-chirped beat frequency that follows, on the average, the amplitude-dependent frequency of the intense plasma wave. Numerical and analytical calculations that support the proposed scheme are presented. Also, new analytical solutions for the constant beat-frequency case are obtained. Finally, a plausible experimental setup is suggested, where one of two CO2 laser beams attains the necessary frequency chirp by passing through a diffraction grating pair.
| Original language | English |
|---|---|
| Pages (from-to) | 1773-1780 |
| Number of pages | 8 |
| Journal | Physics of Fluids B |
| Volume | 3 |
| Issue number | 7 |
| DOIs | |
| State | Published - 1991 |