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US 2006/0050342 A1Published application
Integrated reading and writing of a hologram with a rotated reference beam polarization
AssigneeInPhase Technologies, Inc.
InventorKen Anderson
Life of this patent
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Abstract
A method for monitoring diffraction while reading a hologram includes: illuminating a holographic medium with a reference beam to generate a data beam for a hologram that has been recorded at a set diffraction efficiency with a first polarization, the reference beam having a second polarization; and measuring an offset component in an output arm of the data beam.
Claims23
1-14. (canceled)
A method for monitoring diffraction while reading a hologram, comprising:
- illuminating a holographic medium with a reference beam to generate a data beam for a hologram that has been recorded at a set diffraction efficiency with a first polarization, the reference beam having a second polarization;
- and
- measuring an offset component in an output arm of the data beam.
An apparatus for reading a hologram, comprising:
- a holographic medium including a hologram that has been recorded at a set diffraction efficiency with a first polarization,
- a reference-beam source for illuminating the holographic medium with a reference beam to generate a data beam corresponding to the hologram, the reference beam having a second polarization;
- a polarizing beam splitter for separating an offset component from an output arm of the data beam;
- and
- a detector for measuring the offset component.
2 more elements
Dependencies are inferred from the claim text.