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首页> 外文期刊>Applied optics >Normal-incidence efficiencies of multilayer-coated laminar gratings for the Extreme-Ultraviolet Imaging Spectrometer on the Solar-B mission
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Normal-incidence efficiencies of multilayer-coated laminar gratings for the Extreme-Ultraviolet Imaging Spectrometer on the Solar-B mission

机译：用于Solar-B任务的极紫外成像光谱仪的多层镀膜层流光栅的法向入射效率

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摘要

The normal-incidence efficiencies of two laminar gratings and the reflectances of two parabolic mirrors with matching multilayer coatings were measured by monochromatic synchrotron radiation and were compared with modeling calculations. These optics were developed for the Extreme-Ultraviolet Imaging Spectrometer to be launched on the Japanese Solar-B mission. Each optic has two sectors coated with Mo/Si multilayers that reflect the 17-21-nm and 25-29-nm wave bands at normal incidence. The measured peak grating efficiencies are in the 8%-12% range and are in good agreement with efficiency calculations that account for the effects of groove profile and the microroughness as determined by atomic force microscopy.
机译：通过单色同步加速器辐射测量了两个层状光栅的法向入射效率和两个具有匹配多层涂层的抛物面反射镜的反射率，并与建模计算进行了比较。这些光学器件是为在日本Solar-B任务中发射的极紫外成像光谱仪开发的。每个光学元件都有两个涂有Mo / Si多层膜的扇区，它们在法向入射时反射17-21 nm和25-29 nm波段。测得的峰值光栅效率在8％-12％的范围内，并且与效率计算非常吻合，该效率计算说明了由原子力显微镜确定的凹槽轮廓和微粗糙度的影响。

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