Fundamental and harmonic emission from the rear side of a thin overdense foil irradiated by an intense ultrashort laser pulse

Eidmann, K.*; Kawachi, Tetsuya; Marcinkevicius, A.*; Bartlome, R.*; Tsakiris, G.*; Witte, K.*; Teubner, U.*

Physical Review E, 72(3), p.036413_1 - 036413_9, 2005/09

https://doi.org/10.1103/PhysRevE.72.036413

In order to clarify the mechanism of high-order harmonics generation from solid target, we investigated the emission from rear side of the foil target irradiated by an intense Ti:S laser pulse, duration of 150 fs. The comparison of the exprimental result with our Particle-in-Cell simulation implies that rear side emission is caused by energetic electron bunches which is generated at the front side by resonance absorption.