Diffractive gratings with varying period’s shape

Abstract

The aim of this short review is to recall various designs of diffraction gratings when the condition of the period’s identity is relaxed and to mention resulting thus some of their applications. Among others the apodization function can be implemented as a variable diffraction efficiency due to the gradual change of the period’s shape. Another possible application is the passive achromatization of the diffraction efficiency of the blazed gratings by randomizing their blaze angle. Full Text: PDF References P. Jacquinot and B. Roizen-Dossier, II Apodisation , Prog. Opt. 3, 29 (1964). CrossRef H. Bartelt, Computer-generated holographic component with optimum light efficiency , Appl. Opt. 23, 1499 (1984). CrossRef H. Bartelt, Applications of the tandem component: an element with optimum light efficiency , Appl. Opt. 24, 3811 (1985). CrossRef N. Château, D. Phalippou, and P. Chavel, A method for splitting a gaussian laser beam into two coherent uniform beams , Opt. Commun. 88, 33 (1992). 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