Abstract

This paper presents the results of a comparison of the dependences of the efficiency of diffraction lenses that have a two-layer microstructure with internal and external reliefs on the wavelength and angle of incidence of the radiation. These dependences are obtained in the framework of scalar diffraction theory and by a method based on the solution of the system of Maxwell’s equations. The requirements on the microstructure are determined for which a diffraction lens as an element of an optical system designed to operate in the visible region has the highest diffraction efficiency.

© 2015 Optical Society of America

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