Photonics (Dec 2021)

Properties of Holographic Elements Based on Periodic Structures in a Wide Range of Angles of Incidence

  • Nadezhda Vorzobova,
  • Pavel Sokolov

DOI
https://doi.org/10.3390/photonics8120562
Journal volume & issue
Vol. 8, no. 12
p. 562

Abstract

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An experimental study is carried out on the diffraction and angular selectivity properties of gratings for a wide range of angles of incidence in three-dimensional space. Results for three grating types are presented: nonslanted volume gratings, slanted volume gratings, and hybrid structures. The study encompasses a wide range of directions of radiation incidence on structures and reveals grating orientations that can provide maximal diffraction efficiency for angles of incidence of more than 70°. Obtained data are used to assess the efficiency of diffractive deflectors on the basis of the considered structures, taking into account the trajectory of the Sun as applied to solar-energy problems.

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