Duban M
Appl Opt. 1993 Aug 1;32(22):4253-64. doi: 10.1364/AO.32.004253.
Various grating designs have been proposed by several investigators for possible use with the Lyman/Far-Ultraviolet Spectroscopic Explorer mission. The image quality, the feasibility, and the efficiency of five designs are compared, each using a distinct type of grating: (1) a grating ruled on a deformed ellipsoidal or toroidal blank, (2) an ellipsoidal grating recorded holographically with two auxiliary spherical mirrors, (3) a spherical holographic grating recorded with two auxiliary spherical holographic gratings, (4) a spherical ruled grating with variable spacing and straight grooves, and (5) a spherical ruled grating with a groove pattern that is determined theoretically (hybrid grating). From a purely theoretical viewpoint, grating (5) provides the finest images, followed by gratings, (3), (1), (4), and (2). In view of the current technological limitations, the order of practical importance is gratings (4), (1), (2), (3), and (5).
几位研究人员提出了各种光栅设计，以供可能用于莱曼/远紫外光谱探测任务。比较了五种设计的图像质量、可行性和效率，每种设计使用不同类型的光栅：(1) 在变形的椭球面或环面坯料上刻划的光栅，(2) 用两个辅助球面镜全息记录的椭球光栅，(3) 用两个辅助球面全息光栅记录的球面全息光栅，(4) 具有可变间距和直槽的球面刻划光栅，以及(5) 具有理论确定的槽纹图案的球面刻划光栅（混合光栅）。从纯理论的角度来看，光栅(5) 提供的图像最清晰，其次是光栅(3)、(1)、(4) 和(2)。鉴于当前的技术限制，实际重要性的顺序是光栅(4)、(1)、(2)、(3) 和(5)。
