由离轴抛物面形成的衍射图样。
Diffraction patterns formed by an off-axis paraboloid surface.
作者信息
Arguijo P, Scholl M S, Paez G
出版信息
Appl Opt. 2001 Jun 10;40(17):2909-16. doi: 10.1364/ao.40.002909.
We derive a general, closed-form expression for the diffraction patterns including the aberrations that are due to off-axis alignment and positioning, of a paraboloid mirror. The diffraction patterns obtained in the focal plane of an off-axis paraboloidal mirror suffer modifications by the aberrations that are inherent in these surfaces: astigmatism and coma. Different magnifications in two perpendicular spatial directions indicate astigmatism. The Airy function, which affects a single spatial coordinate, describes the coma aberration. We identified the coma by the increased number of intensity zeros within adjacent lobules.
我们推导了一个通用的封闭形式表达式，用于描述抛物面镜的衍射图案，该图案包括由于离轴对准和定位引起的像差。在离轴抛物面镜焦平面上获得的衍射图案会受到这些表面固有的像差（像散和彗差）的影响而发生变化。两个垂直空间方向上的不同放大倍数表示像散。影响单个空间坐标的艾里函数描述了彗差像差。我们通过相邻小叶内强度零点数量的增加来识别彗差。
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