Design and fabrication of far ultraviolet filters based on π-multilayer technology in high-k materials.

Design and fabrication of far ultraviolet filters based on π-multilayer technology in high-k materials.
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DOI:
10.1038/srep08503
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发表时间:
2015-02-17
期刊:
影响因子:
4.6
通讯作者:
Li YP
Li YP
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Wang XD;Chen B;Wang HF;He F;Zheng X;He LP;Chen B;Liu SJ;Cui ZX;Yang XH;Li YP

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将π多层膜技术的应用扩展到高消光系数材料,并将其引入金属介质滤波器的设计中。金属材料在远紫外波段通常具有很高的消光系数,因此金属材料的光学厚度应小于介质材料的光学厚度。设计并制备了一种9层非周期Al/MgF 2多层膜的宽带FUV滤光片,在140-180 nm波段具有高反射率,在120-137 nm和181-220 nm波段具有低反射率。   
Application of π-multilayer technology is extended to high extinction coefficient materials, which is introduced into metal-dielectric filter design. Metal materials often have high extinction coefficients in far ultraviolet (FUV) region, so optical thickness of metal materials should be smaller than that of the dielectric material. A broadband FUV filter of 9-layer non-periodic Al/MgF2 multilayer was successfully designed and fabricated and it shows high reflectance in 140–180 nm, suppressed reflectance in 120–137 nm and 181–220 nm.
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