DESIGN AND FABRICATION OF MULTILAYER REFLECTIVE FILTERS FOR A RITCHEY-CHRETIEN LYMAN-ALPHA TELESCOPE
DESIGN AND FABRICATION OF MULTILAYER REFLECTIVE FILTERS FOR A RITCHEY-CHRETIEN LYMAN-ALPHA TELESCOPE
复制标题
DOI：
10.1117/1.600684
复制
发表时间：
1996-05
影响因子：
1.3
通讯作者：
J. Park;M. Zukic;M. Wilson;C. E. Keffer;D. Torr;R. Hoover
中科院分区：
文献类型：
--
作者：
J. Park;M. Zukic;M. Wilson;C. E. Keffer;D. Torr;R. Hoover
我们报告的设计和制造的自过滤相机的Ritchey-ChretienLyman-a（Ly-a）望远镜，使用反射多层镜，偏振器，和过滤器的多层反射过滤器。Ly-a望远镜设计用于测量日冕氢Ly-a线（121.6 nm）发射的线性极化。滤波器设计的一个关键要素包括p多层膜的开发，该多层膜被优化以在各个相机的121.6 nm处提供最大反射率，而没有从0到15度入射角的显著角度变化。我们应用自滤波的概念来设计Ly-a望远镜滤波器，它由两个反射镜组成。在中心波长为121.6nm处的4 nm带宽下，净吞吐量的计算值为28.38%。当入射角为10 °时，测量值为27.35%，带宽小于6 nm。
We report the design and fabrication of multilayer reflective filters for the self-filtering cameras of a Ritchey-Chretien Lyman-a (Ly-a) telescope that uses reflecting multilayer mirrors, polarizers, and filters. The Ly-a telescope is designed to measure the linear polization of hydrogen Ly-a line (121.6 nm) emissions from the solar corona. A key element of the filter design includes the development of p multilayers optimized to provide maximum reflectance at 121.6 nm for the respective cameras without significant angular variation from 0 to 15-deg incident angles. We applied self-filtering concepts to design Ly-a telescope filters that are composed of two reflective mirrors. The calculated value of the net throughput is 28.38% with a 4-nm bandwidth at a center wavelength of 121.6 nm. The measured value is 27.35% with a less than 6-nm bandwidth at incidence angle 10 deg.