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Fabrication of Thin-Film Fresnel Optics by Combining Diamond Turning and Photolithographic Processes

机译:结合金刚石车削和光刻工艺制造菲涅耳菲涅尔光学薄膜

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摘要

A novel fabrication process is proposed for manufacturing thin-film metal Fresnel lenses for X-ray applications. This process combines diamond turning technology and photolithographic processes. To prevent thin-film lens substrates from deflection during diamond turning, films were prepared on single crystalline silicon wafers by electrolytic plating. After the Fresnel lens structure is generated on the metal thin films by diamond turning, the silicon substrate was then removed selectively by reactive ion etching. Experimental results demonstrated that the proposed hybrid fabrication process achieves submicron form accuracy and nanometer surface roughness.
机译:提出了一种新颖的制造工艺来制造用于X射线应用的薄膜金属菲涅耳透镜。该工艺结合了金刚石车削技术和光刻工艺。为了防止薄膜透镜基板在金刚石车削过程中变形,通过电镀在单晶硅晶片上制备了薄膜。在通过金刚石车削在金属薄膜上产生菲涅耳透镜结构之后,然后通过反应离子蚀刻选择性地去除硅衬底。实验结果表明,提出的混合制造工艺可实现亚微米形状精度和纳米表面粗糙度。

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