Modification of narrow ablating capillaries under the influence of multiple femtosecond laser pulses
Autor: | Gubin, K. V., Lotov, K. V., Trunov, V. I., Pestryakov, E. V. |
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Rok vydání: | 2016 |
Předmět: | |
Druh dokumentu: | Working Paper |
DOI: | 10.1063/1.4962457 |
Popis: | Powerful femtosecond laser pulses that propagate through narrow ablating capillaries cause modification of capillary walls, which is studied experimentally and theoretically. At low intensities, laser-induced periodic surface structures (LIPSS) and porous coating composed of sub-micron particles appear on the walls. At higher intensities, the surface is covered by deposited droplets of the size up to 10 $\mu$m. In both cases, the ablated material forms a solid plug that completely blocks the capillary after several hundreds or thousands of pulses. The suggested theoretical model indicates that plug formation is a universal effect. It must take place in any narrow tube subject to ablation under the action of short laser pulses. Comment: 7 pages, 12 figures |
Databáze: | arXiv |
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