Physics – Optics
Scientific paper
Sep 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apopt..25.3269h&link_type=abstract
Applied Optics (ISSN 0003-6935), vol. 25, Sept. 15, 1986, p. 3269-3282.
Physics
Optics
12
Geometrical Optics, Gratings (Spectra), Grazing Incidence, Wave Diffraction, Aberration, Angular Distribution, Apertures, Differential Equations, Grazing Incidence Telescopes, Reflection, X Ray Spectroscopy
Scientific paper
The theory of a grazing incidence reflection grating capable of imaging at submicron resolution is presented. The optic is mechanically ruled on a spherical or cylindrical surface with varied groove spacings, delivering diffraction-limited response and a wide field of view at a selected wavelength. Geometrical aberrations are calculated on the basis of Fermat's principle, revealing significant improvements over a grazing incidence mirror. Aplanatic and quasi-aplanatic versions of the grating have applications in both imaging and scanning microscopes, microprobes, collimators, and telescopes. A 2-D crossed system of such gratings, similar to the grazing incidence mirror geometry of Kirkpatrick and Baez (1968), could potentially provide spatial resolutions of about 200 A.
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