概括
我们为CAFE项目设计和制造了一种新的反射多变线空间形格子 (VLSCG),用于绘制温暖热的星系间介质的地图. 这种先进的格在LUV系列中实现了高衍射效率.
科学领域:
- 天文学和天体物理学
- 光学工程是指光学工程.
- 频谱学是一种光谱学.
背景情况:
- 热热星际介质普查,收缩和反探测器 (CAFE) 项目需要对热热环银河介质进行敏感的检测.
- 在103.2nm和103.8nm处检测OVI发射线需要专门的光学元件.
研究的目的:
- 为CAFE光谱仪设计和制造一个反射变线空间形格子 (VLSCG).
- 为了在LUV范围内实现高衍射效率和紧的F/3.6光圈比.
主要方法:
- 全息刻画和离子束蚀刻用于网格制造.
- 一个额外的镜头被集成到全息曝光系统中,以创建多样化的线距.
- 斜离子束轰炸被用来创建三角槽形状,提高衍射效率.
主要成果:
- 成功制造VLSCG,中心线密度为3300线/mm.
- 在106.4nm时达到51%的槽效率,在127.4nm时达到31%的槽效率.
- 测量了0.68毫米的点源图像范围,在模拟的光谱仪光学路径中纠正了误差.
结论:
- 开发的VLSCG满足了CAFE项目的苛刻光学要求.
- 制造技术使小型光谱仪的高效LUV衍射和偏差校正成为可能.
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