Holography using a Bi.sub.12 SiO or Bi.sub.12 GeO.sub.20 recordi

Details Holography using a Bi.sub.12 SiO or Bi.sub.12 GeO.sub.20 recordi Holography using a Bi.sub.12 SiO or Bi.sub.12 GeO.sub.20 recordi

1977-07-01

1979-02-06

Stern, Ronald J.

Static information storage and retrieval

Magnetic bubbles

Guide structure

350 375, 365216, G03H 102, G03H 126

Patent

active

041381890

ABSTRACT:
A holographic storage cell for storing volume holograms wherein a plate of either Bi.sub.12 SiO.sub.20 or Bi.sub.12 GeO.sub.20 is provided with electrodes producing an electric field transversed to the plate. These electrodes may be on opposite ends of the plate, or in the form of interdigitated combs. In one embodiment, such a cell is utilized as a holographic memory wherein the modulation of the object beam and the deflection of the reference and object beams are controlled electronically. The cell may also be utilized to perform calculations by superpositioning data to perform addition and substraction.

REFERENCES:
patent: 3652145 (1972-03-01), Thaxter
patent: 3782802 (1974-01-01), Micheron et al.
patent: 3935441 (1976-01-01), Aldrich et al.
patent: 3940201 (1976-02-01), Micheron et al.
Micheron et al., Optics Communications, vol. 18, No. 2, Jul. 1976, pp. 216-217.
D'Auria et al., Revue Technique Thomson-CSF, vol. 6, No. 2, Jun. 1974, pp. 499-527.
Huignard et al., Applied Physics Letters, vol. 26, No. 5, Mar. 1975, pp. 256-258.

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