Optical memory apparatus using first and second illuminating lig

Details Optical memory apparatus using first and second illuminating lig Optical memory apparatus using first and second illuminating lig

1995-01-30

1997-03-04

Nelms, David C.

Static information storage and retrieval

Radiant energy

Photoconductive

365106, 2504845, 25037007, G11C 1304

Patent

active

056086660

ABSTRACT:
An electronic apparatus comprising a material having a photoconductivity, an energy bandgap, and trap levels. The material is typified by a thin film of polycrystalline diamond. The material is illuminated with a first light having photon energies greater than the energy bandgap of the material. Then, the material is illuminated with a second light having photon energies smaller than the energy bandgap of the material to thereby induce a photocurrent. The amount of the first light can be known by measuring the induced photocurrent.

REFERENCES:
patent: 3375372 (1968-03-01), Miyashita
patent: 3576546 (1971-04-01), Heyman et al.
patent: 5010381 (1991-04-01), Shiba

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