Duplicating a holographic record by using two reference beams

Details Duplicating a holographic record by using two reference beams Duplicating a holographic record by using two reference beams

1976-07-02

1978-10-24

Corbin, John K.

350 369, 350 377, G02B 2700

Patent

active

041218817

ABSTRACT:
A primary recording medium simultaneously receives a pair of reference beams, one of which is comprised of rays that are parallel to an axis of rotation of the primary medium. The primary medium is incrementally rotated about the axis after each of a plurality of object beams is transmitted in sequence thereto from a fixedly disposed source. Interactions between the object beams and the reference beams are recorded in the primary medium as volume holograms, whereby a primary record is recorded. Reconstructions of the object beams and corresponding reference beams emanate from the primary record in response to a primary reconstructing beam. An interaction between the reconstructions is recorded as a volume hologram in a secondary recording medium whereby a secondary record is recorded. A reconstruction of a selected one of the object beams emanates from the secondary record in response to a secondary reconstructing beam.

REFERENCES:
patent: 3296594 (1967-01-01), Van Heerden
patent: 3947085 (1976-03-01), Mottier
patent: 4017144 (1977-04-01), Staebler
Van Heerden, "Theory of Optical Information Storage in Solids," Applied Optics, vol. 2, No. 4, Apr. 1963, pp. 393-400.
De et al., "Three-Beam Holography," Applied Physics Letters, vol. 10, No. 3, Feb. 1967, pp. 78-79.
Palais et al., "Improving Efficiency of . . . Holograms by Copying," Applied Optics, vol. 10, No. 3, Mar. 1971, pp. 667-668.
Guther et al., "Selective Readout . . . in Volume Holography . . . ," Optics Communications, vol. 13, No. 1, Jan. 1975, pp. 21-24.

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