Systems, devices, and methods for side lobe control in holograms
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United States of America Patent
Stats
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Jul 16, 2024
Grant Date -
Nov 18, 2021
app pub date -
Jul 28, 2021
filing date -
Feb 15, 2018
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
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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International Classification(s)
- 2021 Application Filing Year
- G02B Class
- 9695 Applications Filed
- 5263 Patents Issued To-Date
- 54.29 % Issued To-Date
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- 0 Citation Count
- G02B Class
- 0 % this patent is cited more than
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