Subwavelength ripple formation induced by tightly focused femtosecond laser radiation

被引：108

作者：

Wagner, Ralph ^{[1
]}

Gottmann, Jens ^{[1
]}

Horn, Alexander ^{[1
]}

Kreutz, Ernst Wolfgang ^{[1
]}

机构：

[1] Rhein Westfal TH Aachen, Lehrstuhl Lasertech, D-52074 Aachen, Germany

来源：

APPLIED SURFACE SCIENCE | 2006年 / 252卷 / 24期

关键词：

laser induced periodic surface structures; LIPSS; ripples; femtosecond; ultrashort pulsed laser; fused silica; silicon; erbium barium titanate;

D O I：

10.1016/j.apsusc.2005.11.077

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：

Subwavelength ripples (<lambda/4) are obtained by scanning a tightly focused beam (similar to 1 mu m) of femtosecond laser radiation (lambda = 800 nm, t(p) = 100 fs) over the surface of either bulk fused silica and silicon and Er:BaTiO3. The ripple pattern extends coherently over many overlapping laser pulses parallel and perpendicular to the polarisation. Investigated are the dependence of the ripple spacing on the spacing of successive pulses, the direction of polarisation and the material. The evolution of the ripples is investigated by applying pulse bursts with N = 1 to 20 pulses. The conditions under which these phenomena occur are specified, and some possible mechanisms of ripple growth are discussed. Potential applications are presented. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：8576 / 8579

页数：4

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