The authors show that pulse duration affects surface ablation and deep nanovoid formation differently in fused silica, and use 2 ps Bessel pulses to fabricate nanovoids with aspect ratio exceeding 13,000:1 through a 2 mm thick sample.
Self-propelled Leidenfrost droplets on femtosecond-laser-induced surface with periodic hydrophobicity gradient,
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Pulse duration dependence of material response in ultrafast laser-induced surface-penetrating nanovoids in fused silica
The authors show that pulse duration affects surface ablation and deep nanovoid formation differently in fused silica, and use 2 ps Bessel pulses to fabricate nanovoids with aspect ratio exceeding 13,000:1 through a 2 mm thick sample.