Open AccessOptimized polarization-selective computer-generated hologram with fewer phase combinations
Author(s) -
Shaohua Tao,
Xiaocong Yuan,
Wai Chye Cheong,
Jing Bu,
V. A. Kudryashov
Publication year - 2003
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.11.001252
Subject(s) - holography , optics , computer generated holography , polarization (electrochemistry) , pixel , diffraction efficiency , binary number , diffraction , phase (matter) , computer science , materials science , physics , mathematics , chemistry , arithmetic , quantum mechanics
Normally, to incorporate two binary conventional computer-generated holograms (CGHs) into a single polarization-selective computer-generated hologram (PSCGH), the respective pixels of the conventional CGHs will result in 4 different combinations of the phase values. Thus, the 4 phase combinations have to be realized by 4 types of pixel structures in a PSCGH. In this paper, we propose a method to reduce the PSCGH's 4 phase combinations to 3 using an optimization approach. The PSCGH's first-order diffraction efficiency is 30% and the contrast ratio is 28 after the optimization.