Figure 9From: Study of nanostructure growth with nanoscale apex induced by femtosecond laser irradiation at megahertz repetition rateEffect of excessive machining of irradiation spot corresponding to various repetition rates. Nanostructures generated at the dwell time of 0.75 ms for the repetition rates of (a) 4, (b) 8, and (c) 13 MHz for 214 fs.Back to article page