Slow electromagnetic solitons in a collisionless plasma with two counter-propagating laser pulses
Abstract
The nonlinear three-wave interaction among a plasma wave and two counter-propagating electromagnetic waves has been investigated analytically and by a quasi-static fluid simulation with eikonal envelope equations. It was reported that a short laser pulse can gain energy from the counter-propagating pump when the three waves satisfy the matching condition of stimulated Raman backscattering [1]. In this study, we report the formation of slow electromagnetic solitary waves observed behind the amplified seed pulse. An electromagnetic soliton solution in a one-dimensional collisionless plasma is also obtained analytically. The propagation speed of the solitary wave is much slower than the speed of light and can be controlled by changing the pump intensity. [1] G. Shvets et al., Phys. Rev. Lett. 81, 2879 (1998).
- Publication:
-
APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- October 2003
- Bibcode:
- 2003APS..DPPKP1082L