Observation of a transient insulating phase of metals and semiconductors during short-pulse laser ablation

被引：51

作者：

Sokolowski-Tinten, K ^{[1
]}

Bialkowski, J

Cavalleri, A

von der Linde, D

机构：

[1] Univ Essen Gesamthsch, Inst Laser & Plasmaphys, D-45117 Essen, Germany

[2] Univ Pavia, INFM, Dipartimento Elettron, I-27100 Pavia, Italy

来源：

APPLIED SURFACE SCIENCE | 1998年 / 127卷

关键词：

laser ablation; metals; semiconductors;

D O I：

10.1016/S0169-4332(97)00736-8

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have investigated the dynamics of femtosecond laser-induced ablation from the surface of various materials. Combining pump-probe techniques with optical microscopy we have monitored the structural modifications of the irradiated surfaces both in space and time. In the fluence regime below the threshold for plasma formation ablation is caused by the hydrodynamic expansion of laser-heated material. Upon expansion into vacuum each of the investigated materials (Si, GaAs, Al, Au, Mg, Hg) evolves from the initial metallic state into an optically transparent phase with high index of refraction. (C) 1998 Elsevier Science B.V.

引用

页码：755 / 760

页数：6

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