Figure 3From: Study of nanostructure growth with nanoscale apex induced by femtosecond laser irradiation at megahertz repetition rateMicroholes drilled via different pulse-width sizes. Microholes drilled by femtosecond laser pulses with pulse widths of (a) 214 and (b) 714 fs at 16-W average laser power and 0.5-ms dwell time, 13-MHz repetition rate.Back to article page