Absorption of intense high-contrast sub-picosecond laser pulses in solid targets
Max-Planck-Institut für Quantenoptik -
D-85748 Garching, Germany
2 Gesellschaft für Schwerionenforschung mbH - D-64291 Darmstadt, Germany
Accepted: 17 May 2001
The angle dependence of the absorption has been measured for s- and p-polarized light with high-contrast frequency-doubled Ti:sapphire laser pulses of 150 fs duration and a mean intensity of W/cm2. With obliquely incident p-polarized laser light an absorption of up to 62% is measured. The results are discussed on the basis of hydrodynamic and PIC simulations. We find that resonance absorption is the main absorption mechanism.
PACS: 52.50.Jm – Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.) / 52.38.Dx – Laser light absorption in plasmas (collisional, parametric, etc.) / 52.65.Rr – Particle-in-cell method
© EDP Sciences, 2001