HIGH HARMONIC-GENERATION IN A STATIC MAGNETIC-FIELD

Experimentally achievable laser-field intensities of the order of 10(1 6) W/cm(2) and higher may accelerate free and bound electrons to veloc ities of the order of the velocity of light. In this regime magnetic-f ield forces become comparable to electric-field forces. We propose and investigate the application of a strong static magnetic field in the propagation direction of the laser beam as an additional means to tail or the harmonic spectrum in this direction. Even harmonic generation i s shown to be a signature of this additional interaction.