RELATIVISTIC HARMONIC-GENERATION BY INTENSE LASER IN PLASMAS

Starting from the nonlinear equations describing intense laser plasma interaction, without the supposition of tenuous plasma, weak relativit y and a priori assumption phi(f) much less than 1+phi(s), slowly varyi ng part and rapidly varying part of scalar potential phi, and ratio of third harmonic and pumping laser a(3)/a(1) in plasmas pumped by inten se laser (greater than or equal to 10(18) W/cm(2)) are obtained. Plasm a and laser parameters suitable to generation of harmonic are discusse d. (C) 1995 American Institute of Physics.