Abstract

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.

© 1992 Optical Society of America

Aberration corrected aspheric gratings for far ultraviolet spectrographs: conventional approach

David Content, Catherine Trout, Pam Davila, and Mark Wilson
Appl. Opt. 30(7) 801-806 (1991)

Aberration-corrected aspheric grating designs for the Lyman/Far-Ultraviolet Spectroscopic Explorer high-resolution spectrograph: a comparison

Catherine Trout, David Content, and Pam Davila
Appl. Opt. 31(7) 943-948 (1992)

Holographic diffraction gratings generated by aberrated wave fronts: application to a high-resolution far-ultraviolet spectrograph

Robert Grange and Michel Laget
Appl. Opt. 30(25) 3598-3603 (1991)

Comparison of grating designs for the Lyman Far-Ultraviolet Spectroscopic Explorer spectrograph

Michel Duban
Appl. Opt. 32(22) 4253-4264 (1993)

Aberration-reduced holographic spherical gratings for Rowland circle spectrographs

Robert Grange
Appl. Opt. 31(19) 3744-3749 (1992)