Open AccessEnhanced diffraction efficiency of two-dimensional phase gratings
Author(s) -
U. U. Graf
Publication year - 2018
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.26.032739
Subject(s) - optics , grating , diffraction efficiency , diffraction grating , multiplexer , superposition principle , terahertz radiation , blazed grating , materials science , diffraction , phase (matter) , beam (structure) , ptychography , physics , optoelectronics , multiplexing , computer science , telecommunications , quantum mechanics
Phase gratings are used as beam multiplexers in the submillimeter and Terahertz spectral range. Two-dimensional beam arrangements can often be obtained most easily by the superposition of two one-dimensional grating structures. We show that in general this approach does not yield the maximum grating efficiency and propose a method to obtain significantly higher efficiencies for this grating class.