[21p-P14-1~7] 3.7 Laser processing

[21p-P14-1] Nanoprocessing on Solid Surfaces with Few-cycle Laser Pulses

〇Godai Miyaji¹ (1.Tokyo Univ. of A & T)

Keywords:Nanostructure formation,Ultrafast phenomena,few-cycle laser pulse

Few-cycle laser pulses have intense electric fields because of laser energy concentration in the ultrashort time duration. The pulses, therefore, delivered from the laser oscillator are expected to be able to ablate solid surfaces with the intense e-fields. With the 7 fs, 5 nJ laser pulses from the Ti:sapphire laser oscillator operated at 80 MHz, we observed the surface ablation of diamondlike carbon films and the nanostructure formation on the surface. This experimental result suggests a promising approach to laser material processing without the laser amplification system.