Periodic microstructures produced by femtosecond laser irradiation on titanium plate
Periodic microstructures produced by femtosecond laser irradiation on titanium plate
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DOI：
10.1016/j.vacuum.2006.01.016
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发表时间：
2006-09-07
期刊：
影响因子：
4
通讯作者：
Fujita, Masayuki
中科院分区：
文献类型：
--
作者：
Tsukamoto, Masahiro;Asuka, Keita;Fujita, Masayuki
利用激光波长为800 nm、脉冲长度为100fs的飞秒激光辐照钛板，在其表面形成周期性组织。它们平行于激光偏振矢量方向，周期为1.5-2.4微米，周期约为700 nm，周期约为700 nm。结果表明，平行周期微结构所需的激光能量比周期纳米结构所需的激光通量高。这种平行的周期性微结构和周期性纳米结构可能是由于激光及其散射波与表面波的相互作用而产生的强度调制而形成的。激光照射钛板的脉冲数从10个增加到110个。在50个脉冲中，在平行周期微结构的山丘上产生了微点。从70个脉冲开始，平行的周期微结构变化为具有空间调制的山丘结构，并且由于山丘的结合，它们的周期增加。(C)2006爱思唯尔有限公司。保留所有权利。
The periodic microstructures on titanium plate were formed by the irradiation of the ferntosecond laser with the laser wavelength of 800nm and the pulse length of 100 fs. They were oriented to the direction parallel to the laser polarization vector and their (parallel periodic microstructures) period was 1.5-2.4 mu m. The periodic nanostructures were also produced by the ferntosecond laser ablation, which were oriented to the direction perpendicular to the laser polarization vector and whose period was about 700 nm. Our results indicated that the laser fluence required for the parallel periodic microstructures was higher than that for the periodic nanostructures. The parallel periodic microstructures and the periodic nanostructures might be formed by an intensity modulation, which arose from the interaction of the laser and its scattered wave with a surface wave. The number of laser pulses to irradiate Ti plate was increased from 10 to 110. From 50 pulses, microdots were generated on the hills of the parallel periodic micro structures. From 70 pulses, the parallel periodic microstructures were varied to those with spatial modulation on the hills and the period of them was increased due to the bonding of the hills. (c) 2006 Elsevier Ltd. All rights reserved.