Open AccessThe Offner imaging spectrometer in quadrature
Author(s) -
Xesús Prieto-Blanco,
Carlos Montero-Orille,
Héctor González-Núñez,
María Dolores Mouriz,
Elena López Lago,
Raúl de la Fuente
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.012756
Subject(s) - optics , spectrometer , physics , imaging spectrometer , quadrature (astronomy) , curved mirror , grating , diffraction grating , diffraction , wavelength , spectral imaging , reflection (computer programming) , cardinal point , computer science , programming language
This is a proposal and description of a new configuration for an Offner imaging spectrometer based on the theory of aberrations of off-plane classical-ruled spherical diffraction gratings. This new spectrometer comprises a concave mirror used in double reflection and a convex reflection grating operating in quadrature, in a concentric layout. A very simple procedure obtains designs that are anastigmatic for a given point on the entrance slit and a given wavelength. Specific examples show that the performance of this type of system improves the performance of analogous conventional in-plane systems, when compactness and/or high spectral resolution is of fundamental importance.