Ablation and nanostructuring of metals by femtosecond laser pulses

被引：38

作者：

Ashitkov, S. I. ^{[1
]}

Komarov, P. S. ^{[1
]}

Ovchinnikov, A. V. ^{[1
]}

Struleva, E. V. ^{[1
]}

Zhakhovskii, V. V. ^{[2
]}

Inogamov, N. A. ^{[3
]}

Agranat, M. B. ^{[1
]}

机构：

[1] Russian Acad Sci, Joint Inst High Temp, Moscow 125412, Russia

[2] All Russia Res Inst Automat, Moscow 127055, Russia

[3] Russian Acad Sci, Landau Inst Theoret Phys, Chernogolovka 142432, Moscow Region, Russia

来源：

QUANTUM ELECTRONICS | 2014年 / 44卷 / 06期

关键词：

femtosecond laser pulse; ablation; nanostructures;

D O I：

10.1070/QE2014v044n06ABEH015448

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Using an interferometric continuous monitoring technique, we have investigated the motion of the surface of an aluminium target in the case of femtosecond laser ablation at picosecond time delays relative to the instant of laser exposure. Measurements of the temporal target dispersion dynamics, molecular dynamics simulation results and the morphology of the ablation crater have demonstrated a thermomechanical (spall) nature of the disruption of the condensed phase due to the cavitation-driven formation and growth of vapour phase nuclei upon melt expansion, followed by the formation of surface nanostructures upon melt solidification. The tensile strength of heated aluminium in a condensed state has been determined experimentally at an expansion rate of similar to 10(9) s(-1).

引用

页码：535 / 539

页数：5

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