Achromatic Cycloidal Diffraction Gratings

A. A. Hayrapetyan; R. A. Aramyan; M. R. Hakobyan; R. S. Hakobyan

doi:10.3103/S1068337219030058

Achromatic Cycloidal Diffraction Gratings

Authors: Hayrapetyan A.A.¹, Aramyan R.A.¹, Hakobyan M.R.¹, Hakobyan R.S.¹
Affiliations:
1. Yerevan State University
Issue: Vol 54, No 3 (2019)
Pages: 262-266
Section: Article
URL: https://journals.rcsi.science/1068-3372/article/view/228916
DOI: https://doi.org/10.3103/S1068337219030058
ID: 228916

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Abstract

A theory of a broadband thin-film polarizing beam splitter based on an anisotropic cycloidal diffraction grating is proposed. The achromatization of the grating is provided by creating two-layer chiral structures with an opposite twist sense. Such a system has almost 100% efficiency. The calculations were carried out by the Jones matrix method. The resulting efficiency and bandwidth are higher than the previously known results.