Two-beam high-order harmonics from solids: Coupling mechanisms
Abstract
The polarization of the two beam (driver-probe) high-order harmonic generation from solids is measured. The experiments, together with computer simulations, allow us to distinguish two different coupling mechanisms of the driver and the probe, resulting in different harmonic efficiencies and spectral slopes. We find that in the nonrelativistic regime the coupling is mostly due to the nonlinear plasma density modulation.
- Publication:
-
Physical Review E
- Pub Date:
- November 2010
- DOI:
- Bibcode:
- 2010PhRvE..82e6410T
- Keywords:
-
- 52.27.Ny;
- 42.65.Ky;
- 52.38.-r;
- 52.65.Rr;
- Relativistic plasmas;
- Frequency conversion;
- harmonic generation including higher-order harmonic generation;
- Laser-plasma interactions;
- Particle-in-cell method