Optical information storage device and storage method based on optical excitation material

Abstract

The invention discloses a light information storage device based on optical excitation materials and a storage method thereof. Although current oxide-based optical excitation materials have quite high chemical stability and heat stability, long-persistence phenomena thereof will cause certain negative effects on intensity and time of information storage. The device comprises an information storage array, a main excitation light source, an auxiliary excitation light source, a light sensor array and a positioning device. The main excitation light source and the auxiliary excitation light source are used for irradiating optical excitation materials in a storage unit so as to change electron trap states of the optical excitation materials, thereby achieving storage of the information. The device is simple in structure, and reads and writes quickly; disadvantages of the oxide-based optical excitation materials can be overcome; and the device can become a novel light storage scheme.

Description

Technical field [0001] The invention belongs to the field of information storage, and particularly relates to an optical information storage device based on a photoactive material and a storage method thereof. Background technique [0002] At present, optical information storage media are mainly formed by optical discs, such as CD discs, DVD discs and Blu-ray discs. It mainly burns the recording medium film in the optical disc through the laser thermal effect, so that there is a difference in reflectivity between the generated micro-spot area and the surrounding medium, thereby realizing information writing and reading. Using this method for optical information storage has the advantages of long storage life, high information carrier-to-noise ratio, and low cost. However, compared with the existing magnetic disk and flash memory type information storage methods, the optical disk has the disadvantages of slower reading and writing speed and fewer erasable times. [0003] Photoacti...

AI Technical Summary

Problems solved by technology

However, the long afterglow phenomenon of oxide-based photoactive materials will have a certain negative impact on the intensity and time of information storage.

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