Abstract
Transmission of a subpicosecond relativistic laser pulse is observed through solid foils and preformed overcritical plasmas. Transmission rates near 10% for densities above 10×nc are measured. A moderately relativistic strong threshold in intensity is found in order to observe this effect. The experimental results as well as preliminary particle-in-cell simulations suggest that for thin solid foils the observed transmission is explicable by rapid heating and expansion to transmissive conditions during the pulse. Self-induced transparency and hole boring processes apply to thicker preformed plasmas. These results have important implications in fast ignition for inertial confinement fusion.
| Original language | English |
|---|---|
| Pages (from-to) | 2326-2329 |
| Number of pages | 4 |
| Journal | Physical Review Letters |
| Volume | 80 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 1 Jan 1998 |