title: Simulation of mechanically ruled concave diffraction gratings by use of an original geometric theory.
abstract: A geometric theory is developed for a spherical concave diffraction grating that has variable line spacing and curved grooves and can be produced with existing technology. The aberration coefficients of this grating are determined. A comparison of these coefficients with the corresponding coefficients of holographic gratings and with CODE V polynomial coefficients gives a clearer understanding of the similarity and difference between mechanically ruled and holographically recorded concave gratings and allows the optimization of these gratings with standard computer programs.
authors.affiliation: Netherlands Organisation for Applied Scientific Research Institute of Applied Physics, Stieltjesweg 1, PO Box 155, 2600 AD, Delft, Netherlands. sokolova@tpd.tno.nl
authors.forename: Elena
authors.initials: E
authors.lastname: Sokolova