Polytopic multiplex holography

A method for holographic recording, comprising:

• creating a first hologram in a holographic media using a first reference beam and a first signal beam comprising page-wise data modulated by a spatial light modulator (SLM), the first signal beam having a beam waist;
• creating a second hologram using a second reference beam and a second signal beam, the second signal beam having a beam waist;
• overlapping at least a portion of the second hologram with the first hologram;
• and
• separating the first hologram from the second hologram such that substantially no portion of the beam waist of the first signal beam occurs at the same location as any portion of beam waist of the second signal beam;
• reconstructing the first hologram in a first portion of an output beam;
• reconstructing at least the second hologram in a second portion of the output beam;
• and
• filtering the output beam to substantially contain only a reconstruction of the first hologram.

An apparatus for recordation a hologram, comprising:

• a first signal beam comprising page-wise data modulated by a spatial light modulator (SLM) and a first reference beam generating a first hologram in a holographic medium the first signal beam having a first beam waist;
• a second signal beam and a second reference beam, the second signal beam and the second reference beam generating a second hologram in a holographic medium the second signal beam having a second beam waist, at least a portion of the first hologram spatially overlapping with at least a portion of the second hologram in the holographic media such that substantially no portion of the waist of the first signal beam occurs in the same location in the holographic media as any portion of the waist of the second signal beam;
• an output beam having:
• a first portion that includes a readout of the first hologram;
• and
• a second portion that includes a readout of the second hologram;
• and
• a filter for filtering at least the second portion out of the output beam.

An apparatus for reading out a first hologram created in a holographic media from a first signal beam comprising page-wise data modulated by a spatial light modulator (SLM) and a reference beam, the first hologram overlapping in the holographic media with a portion of at least a second hologram created by a second signal beam and the reference beam such that substantially no portion of a beam waist of the first signal beam occurs at the same location as any portion of a beam waist of the second signal beam, including:

• an output beam having:
• a first portion in which the first hologram is read out;
• and at least a second portion in which the second hologram is read out;
• and
• a filter in the output beam that filters the output beam to contain substantially only a reconstruction of the first hologram.