Morphology studies of the metal surfaces with enhanced absorption fabricated using interferometric femtosecond ablation

被引：18
作者：
Kaakkunen, J. J. J. [1 ]
Paivasaari, K. [1 ]
Kuittinen, M. [1 ]
Jaaskelainen, T. [1 ]
机构：
[1] Univ Joensuu, Dept Math & Phys, FIN-80101 Joensuu, Finland
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2009年 / 94卷 / 02期
关键词：
LASER-ABLATION; OPTICAL ABSORPTANCE; PULSES; ENERGY;
D O I：
10.1007/s00339-008-4895-2
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Recently, the enhancing of bulk metals optical absorption with focused femtosecond pulses was demonstrated. This absorption enhancement is caused by different nano- and micro-structures which are formed during laser ablation with ultrashort pulses. In this paper we study the evolution of the surface structures using interferometric ablation and compare it to normal fs-ablation. Previously we have shown that interferometric femtosecond ablation is an efficient method to fabricate absorbing metal surfaces. In this study we ablated large areas of hole-array structures with different pulse numbers in polished stainless steel and copper samples. The evolution of surface morphology and the depth of the holes for these structured surfaces are presented. In addition, the reflectance of laser generated surface structures are measured at the wavelength range of 200-2300 nm using a standard spectrophotometer.
引用
收藏
页码：215 / 220
页数：6
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