• A. Bonatto, R. Pakter, F.B. Rizzato
  IF-UFRGS, Porto Alegre

In this work the non­lin­ear rel­a­tivis­tic prop­a­ga­tion of in­tense lasers in plas­mas is in­ves­ti­gat­ed. It is known that, under ap­pro­pri­ate con­di­tions, the pon­dero­mo­tive force as­so­ci­at­ed with the laser en­ve­lope can ex­cite large am­pli­tude elec­tron waves (wake­fields), which can be of in­ter­est for par­ti­cle ac­cel­er­a­tion schemes. Nu­mer­i­cal so­lu­tions show­ing some of the pos­si­ble be­hav­iors of this sys­tem are pre­sent­ed and com­pared to an­a­lyt­i­cal ones, ob­tained through an ef­fec­tive po­ten­tial ap­proach using a one-di­men­sion­al La­grangian for­mal­ism.