Author/Authors :
Pathak، نويسنده , , N.C. and Bussolino، نويسنده , , G. and Cecchetti، نويسنده , , C.A. and Giulietti، نويسنده , , A. M. Giulietti، نويسنده , , D. and Kِster، نويسنده , , P. and Levato، نويسنده , , T. and Labate، نويسنده , , L. and Gizzi، نويسنده , , L.A.، نويسنده ,
Abstract :
Spectral modification of an intense ( ≥ 10 18 W cm − 2 ) laser pulse propagating in a helium gas target was studied using Thomson scattering diagnostic. The spectra recorded at 90° to the laser propagation and polarization direction show a significant modulation and modification of the incident laser pulse during its interaction and propagation through the helium gas target. Simulations suggest that such a modulation in the spectrum of the laser pulse could arise due to its interaction with the self excited plasma waves.
Keywords :
Laser plasma interaction , Wakefield , Thomson scattering , Spectrum modification
