Double-pulse femtosecond laser ablation of the surface of stainless steel with variable interpulse delays

被引：4

作者：

Ageev, E. I. ^{[1
]}

Bychenkov, V. Yu. ^{[2
]}

Veiko, V. P. ^{[1
]}

Ionin, A. A. ^{[2
]}

Kudryashov, S. I. ^{[1
,2
,3
]}

Petrov, A. A. ^{[1
]}

Samokhvalov, A. A. ^{[1
]}

机构：

[1] ITMO Univ, St Petersburg 197101, Russia

[2] Lebedev Phys Inst, Moscow 119991, Russia

[3] Natl Res Nucl Univ MEPhI, Moscow Engn Phys Inst, Moscow 115409, Russia

来源：

JETP LETTERS | 2016年 / 104卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

ALUMINUM; METALS; MATTER;

D O I：

10.1134/S0021364016180065

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Spectral studies of optical emission from plumes produced via ablation of the surface of stainless steel in the phase explosion regime at different incident fluences by a pair of collinear degenerate femtosecond laser pulses, separated by variable delay time of 0.01-1.5 ns, demonstrate a drastic decrease in atomic emission intensities in a subnanosecond range. This effect was related to "bulk" absorption of the second pump pulse in ablative plumes with near-critical density, achieved during their hydrodynamic expansion on a subnanosecond timescale.

引用

页码：421 / 424

页数：4

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