Davila P, Content D, Trout C
Appl Opt. 1992 Mar 1;31(7):949-54. doi: 10.1364/AO.31.000949.
Two approaches to reducing the optical aberrations of concave diffraction gratings have been studied: holographically controlling the groove curvature and spacing, and shaping the optical substrate while keeping the grooves straight and equally spaced. We develop the theory of ellipsoidal holographic diffraction gratings and apply this theory to Rowland circle spectrographs. We show that ellipsoidal holographic gratings used in second order can yield high spectral resolutions across the spectral band. These gratings may be suitable for use in far-ultraviolet Rowland spectrographs with small bandpasses.
通过全息技术控制槽曲率和间距，以及在保持槽笔直且等间距的同时对光学基底进行整形。我们发展了椭球全息衍射光栅理论，并将该理论应用于罗兰圆光谱仪。我们表明，二阶使用的椭球全息光栅可在整个光谱带产生高光谱分辨率。这些光栅可能适用于具有小带宽的远紫外罗兰光谱仪。
