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Theoretical study of filter design for UV-bandpass filters for the CETUS probe mission study

机译:用于CETUS探头任务研究的UV带通滤光片的滤光片设计的理论研究

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The importance of high performance interference bandpass filters in the UV is growing recently. For the CETUS project a set of bandpass filters with a clear aperture of 70 mm is required centered at the wavelengths 215.5 nm / 256.5 nm / 297.5 nm / 338.5 nm / 379.5 nm with a FWHM of 41 nm and blocked as good as possible up to 1100 nm. We present a design study based on all-dielectric hard sputtered coatings on colorglass substrates for the wavelengths 297.5 nm / 338.5 nm / 379.5 nm. The colorglass substrates where chosen to suppress ghost images by reflection on the exit face and to improve the blocking in the required range. For the wavelengths 215.5 nm and 256.5 nm a conventionally evaporated design of metal-dielectric Fabry-Perot stacks was chosen on fused silica substrates. We comment on how system requirements are leading to filter specifications and show theoretical spectra of the chosen filter designs.
机译:高性能干涉带通滤光片在紫外线中的重要性最近日益提高。对于CETUS项目,需要一组透明孔径为70 mm的带通滤光片,其中心波长为215.5 nm / 256.5 nm / 297.5 nm / 338.5 nm / 379.5 nm,FWHM为41 nm,并被尽可能好的阻挡1100纳米我们提出了一种基于全介电硬溅射镀膜在彩色玻璃基板上的设计研究,其波长为297.5 nm / 338.5 nm / 379.5 nm。选择彩色玻璃基板以通过在出射面上的反射来抑制重影,并在所需范围内改善遮挡效果。对于215.5 nm和256.5 nm的波长,在熔融石英基板上选择了传统的金属电介质法布里-珀罗叠层蒸镀设计。我们评论系统要求如何导致滤波器规格的变化,并显示所选滤波器设计的理论范围。

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