Holographic recording and related reading process

Details Holographic recording and related reading process Holographic recording and related reading process

1982-07-02

1986-06-03

Corbin, John K.

350 364, 350 367, 350 381, 3501622, G42B 532

Patent

active

045926182

ABSTRACT:
A holographic process is provided for recording-reading by means of index strata in the volume of a photoexcitable storage medium. This process consists in causing two beams to interfere in this medium during two successive writing steps by using writing radiations of different wavelengths. The reading of this medium is then effected by means of a third coherent radiation having for wave vector in the medium a linear combination of the wave vectors of said writing radiations.

REFERENCES:
patent: 3519323 (1970-07-01), Collier et al.
patent: 3603668 (1971-09-01), DeBitetto
patent: 3617274 (1971-11-01), Lin
patent: 3754808 (1973-08-01), Clay et al.
patent: 4451114 (1984-05-01), Nicholson et al.
Gulanyan et al., "Nondestructive . . . Crystals", Sov. J. Quantum Electron., vol. 9, No. 5, May 1979, pp. 647-649.
Huignard and Herriau, "Real-Time . . . Configuration", Applied Optics, vol. 16, No. 7, Jul. 1977, pp. 1807-1809.

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