Systems, devices, and methods for side lobe control in holograms

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United States of America Patent

PATENT NO 12038721
APP PUB NO 20210356909A1
SERIAL NO

17387369

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Abstract

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Systems, devices, and methods for side lobe control in holograms are described. The magnitude of the side lobes of a hologram depends on the distribution of refractive index modulation (Δn), therefore control of side lobe magnitude may be achieved by controlling the distribution of Δn. The distribution of Δn may be controlled by replicating a hologram from a master with two reference beams, where the wavelength and angle of each reference beam, the playback angle of the master hologram, and the thickness of the master hologram, the copy holographic recording medium (HRM), and the recording substrate are carefully chosen to achieve a pattern of meta-interference within the HRM that matches the desired distribution of Δn.

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Patent Owner(s)

Patent OwnerAddress
NORTH INCKITCHENER ONTARIO N2G 1Y7

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Tsen, Robin W Kitchener, CA 11 20

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