Diffraction gratings and optical aberrations

Physics – Optics

Scientific paper

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Aberration, Gratings (Spectra), Light Transmission, Ray Tracing, Wave Fronts, Astigmatism, Collimation, Coma, Defocusing, Ebert Spectrometers

Scientific paper

The effects introduced by a plane diffraction grating on a diffracted wave front when a quasi-plane beam is incident on it are calculated using ray tracing and approximate analytical expressions. Images corresponding to the center of the field of a parabolized Ebert spectrometer and in the paraxial plane due to grating effects are depicted. The latter include wave fronts representing four types of aberration: spherical, coma, astigmatism, and defocusing.

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