飞秒激光金属表面着色技术研究-光学专业毕业论文.docx

长春理工大学硕士学位论文原创性声明
本人郑重声明:所呈交的硕士学位论文.《飞秒激光金属着色技术研究》是本人在指导教师的指导下,独立进行研究工作所取得的成果。除文中已经注明引用的内容外, 本论文不包含任何其他个人或集体已经发表或撰写过的作品成果。对本文的研究做出重要贡献的个人和集体。均已在文中以明确方式标明。本人完全意识到本声明的法律结果由本人承担。
作者签名:遮盖7雪—塑i年—芝月—兰卫闩
长春理工大学学位论文版权使用授权书
本学位沦文作者及指导教师完全了解“长春理工大学硕士、博士学位论文版权使用规定”,同意硅=营理工大学保留并向国家有关部门或机构送交学位论文的复印件和电子版,允许论文被查阅和借阅。本人授权长春理工大学可以将本学位论文的全部或部分内容编入有关数据库进行检索,也可采用影印、缩印或扫描等复制手段保存和汇编学位论文。
作者签名:垣兰!翌。!!!zL年—王月—:型zrR
指导导师躲张斗毕年;月莓R
摘 要
论文主要利用飞秒激光通过定点辐照和扫描辐照两种方式对金属铝表面进行微纳结构的制各。在定点辐照实验中,得到了飞秒激光诱导周期性表面结构,并利用扫描电子显微镜观察辐照后铝的表面结构。讨论了脉冲能量,脉冲个数对铝表面微观结构形成的影响。利用飞秒激光与表面等离子体激元干涉理论分析丁周期性微纳结构的形成机制,利用双温模型理论模拟了飞秒激光辐照后铝表面电子能量的空间分布。在扫描辐照实验中,发现被飞秒激光脉冲扫描过的铝表面形成了光栅结构,并且通过控制实验参数可使铝表面呈现为黑色、灰色和金色。飞秒激光辐照后铝表面吸收率的测量结果表明黑色铝在8pro~25pm波段的光吸收率可达85%~95%。利用颜色光学理论解释了金属表面颜色的改变,从微观上分析了铝样品光学特性改变的机理。
关键词:飞秒激光 金属着色 激光诱导周期性表面结构 吸收率
ABSTRACT
Micro—and n&no-structure on aluminum surface is prepared using femtosecond laser through either fixing or scanning the focused laser beam in this thesis The femtoseeond laser-induced periodic surface structures had been firmly obtained by the fixed laser beam method,and the structures were observed by using a scanning electron microscope The eriects of pulse energy and pulse number on the micro·structure morphology formation of the aluminum surface had been discussed The mechanism of periodie microstructore formation was analyzed by interference theory between femtosecond laser and surface plasmon polaritons,and the spmi al distribution of electron energy on the aluminum surface was simulated by using two—temperature model In the expedment ofscanning focused laser
structures on山e surface ofaluminum were structured aluminum
sample shows as black,gray OT golden by properly controlling experimental paranleters 850/P95%of the incident light in the wavelength of 89m to 269m is absorbed by the blacken aluminum Color variation of aluminum was explained by utilizing color optics theory,and the varying mechanism ofoptieal properties for aluminum samples was analyzed on