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.
Rok vydání:	2016
Předmět:	Physics - Plasma Physics Condensed Matter - Other Condensed Matter Physics - Optics
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
Externí odkaz:	http://arxiv.org/abs/1604.07135 Zobrazit plný text záznamu View this record from Arxiv