A non-alloying, stable Ohmie contacts on Si/Pd/GaAs were obtained. A specific contact resistivity of 2.75×10-6Ω·cm2 on 6.7×1017cm-3 substrates can be achieved after Ar+ laser annealing. The thermal stability is satisfactory for those annealed at 410℃ for about 8 hours in flowing forming gas.