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US 2019/0324181 A1Published application
Large Bandwidth Volume Holographic Phase Converter Apparatus, Methods, and Applications
AssigneeUniversity of Central Florida Research Foundation, Inc.
InventorsLeonid Glebov, Ivan Divliansky, Marc SeGall
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Abstract
A volume Bragg grating (VBG) containing one or more controlled phase profiles holographically embedded therein that is operable over a broad wavelength range, methods for making such controlled phase profile-embedded VBGs, and applications thereof.
Claims9
A volume holographic phase mask, comprising:
- a single, bulk piece of a volume phase photosensitive medium, having a spatial pattern of refractive index corresponding to a spatial pattern of applied actinic optical radiation, containing within a volume of the bulk piece of the phase photosensitive medium at least one volume holographic Bragg grating with at least one embedded spatial phase pattern.
A method for making a volume holographic phase mask, comprising:
- recording a volume holographic Bragg grating in a single, bulk piece of volume phase photosensitive medium using a two beam holographic optical setup where at least one known phase pattern generating object is disposed in at least one beam of the two beam holographic optical setup.
A method for multiplexing and/or demultiplexing of optical beams using a volume holographic phase mask, comprising:
- inputting to a volume holographic phase mask comprising a single, bulk piece of volume phase photosensitive medium containing within a volume of the bulk piece of volume phase photosensitive medium at least two permanent volume holographic Bragg gratings (VBGs) with at least two permanent corresponding holographic phase profiles, at least a first beam having a wavelength λ1 satisfying the Bragg condition for the first recorded VBG and at least a second beam having a wavelength λ2 satisfying the Bragg condition for the second recorded VBG;
- and
- outputting a single beam comprising λ1 and λ2 having different phase profiles, or
- inputting a single beam comprising λ1 and λ2 with different phase profiles to a volume holographic phase mask comprising a single, bulk piece of volume phase photosensitive medium containing within a volume of the bulk piece of volume phase photosensitive medium at least two permanent volume holographic Bragg gratings (VBGs) with at least two permanent corresponding holographic phase profiles, at least a first beam having a wavelength λ1 satisfying the Bragg condition for the first recorded VBG and at least a second beam having a wavelength λ2 satisfying the Bragg condition for the second recorded VBG;
- and
- outputting two beams with wavelengths λ1 and λ2 with different phase profiles.
3 more elements
Dependencies are inferred from the claim text.