Four-level phase grating generated by combining two binary gratings through coherent imaging

Anders Magnusson; Sverker Hård

doi:10.1364/DOMO.2000.DTuD5

Diffractive Optics and Micro-Optics
OSA Trends in Optics and Photonics (Optica Publishing Group, 2000),
paper DTuD5
•https://doi.org/10.1364/DOMO.2000.DTuD5

Four-level phase grating generated by combining two binary gratings through coherent imaging

Anders Magnusson and Sverker Hård

Diffractive Optics and Micro-Optics 2000

Québec City Canada
18–22 June 2000
ISBN: 1-55752-635-4

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A. Magnusson and S. Hård, "Four-level phase grating generated by combining two binary gratings through coherent imaging," in Diffractive Optics and Micro-Optics , T. Li, ed., Vol. 41 of OSA Trends in Optics and Photonics (Optica Publishing Group, 2000), paper DTuD5.

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Abstract

The diffraction efficiency of a 180° binary phase grating was increased by imaging it onto a 90° binary phase grating, their periods well matched. Effectively, a four-level phase grating was achieved.

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