Data storage using pulsed optical domain reversal

Details Data storage using pulsed optical domain reversal Data storage using pulsed optical domain reversal

1994-06-07

1995-12-19

Ben, Loha

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369110, 359251, 359262, 422 8201, G11B 700, G02F 103

Patent

active

054775191

ABSTRACT:
Digital data is stored using optical means exclusively in a storage media which is characterized with a soft-phonon mode. Electric dipole domains in the storage medium are caused to reverse in polarity in response to the impinging thereon of an optical pulse. The optical pulse, which may be formed of a plurality of colliding optical pulses, must have sufficient energy to cause the reversal of the polarization of the electric dipole domain, or the reorientation thereof, without providing sufficient energy whereby the dipole reverts to its initial condition. Any material which exhibits structural phase transitions associated with soft-phonons which can couple directly or by non-linear processes to incident irradiation are candidates for optical domain-switching.

REFERENCES:
patent: 4636799 (1987-01-01), Kubick
patent: 4765721 (1988-08-01), Agostinelli et al.
patent: 4856094 (1989-08-01), Heidrich et al.
patent: 5085503 (1992-02-01), Osugi et al.
patent: 5091980 (1992-02-01), Ogawa et al.
patent: 5156810 (1992-10-01), Ribi
patent: 5157539 (1992-10-01), Beasley
patent: 5193023 (1993-03-01), Yamada et al.

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