光学元件亚表面缺陷结构的蚀刻消除
Eliminating of subsurface damage structure
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摘要: 针对强激光光学元件的应用要求,对光学材料在研磨和抛光过程中形成的亚表面缺陷进行了分析,并借鉴小工具数控抛光和Marangoni界面效应,提出采用数控化学刻蚀技术来实现光学表面面形和微结构形貌的高精度加工,对亚表面缺陷具有很好的克服和消除作用。通过实验对亚表面缺陷的分布位置和特性进行了分析,同时实验验证了在静止和移动条件下Marangoni界面效应的存在,对材料的定量去除进行了实验,提出了亚表面缺陷的去除方法。
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关键词:
- 化学刻蚀 /
- Marangoni界面效应 /
- 亚表面缺陷 /
- 抛光
Abstract: The sub-surface damage(SSD) in optied components formed in the process of whetting and polishing is analyzed. Utilizing the mechanism of wet etching and the Marangoni interface effect, CNC chemical etching technique is used to achieve high precision matching of optics surface and elimilate the SSD at the same time. The charactersitics and positions of SSD are analyzed experimently. SSD elimination method SSD is also presented.-
Key words:
- chemical etching /
- mangoni interface effect /
- subsurface damage /
- polishing
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