Dual-beam super-resolution optical storage material read-write device and read-write method

A technology of optical storage materials and read-write devices, applied in the field of optical storage, can solve problems such as the inability to further increase the storage density, the limitation of the storage capacity of optical discs, and the inability to obtain light spots, etc., and achieve no erasure effect, guaranteed erasure effect, and preservation conditions demanding effects

Active Publication Date: 2018-11-27
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional storage technology is limited by the physical limit and technical limitations of the material itself. The size of the spot size for reading and writing is mostly near the diffraction limit, and the storage density cannot be further improved. In addition, the light wavelengths used for recording in existing optical storage technologies are mostly In the ultraviolet range, the cost of the light source of this wavelength is relatively high, and the spot below the diffraction limit cannot be obtained
The storage capacity of disc storage is very limited

Method used

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  • Dual-beam super-resolution optical storage material read-write device and read-write method
  • Dual-beam super-resolution optical storage material read-write device and read-write method
  • Dual-beam super-resolution optical storage material read-write device and read-write method

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Embodiment 1

[0046] Taking a diarylethene derivative 1,2-bis(2-methyl-6-phenyl-1-1 dioxy-3-benzothiophene) perfluorocyclopentene as a reference, its ring-opened state and The maximum absorption peaks of the closed-loop state are 375nm and 450nm respectively, the fluorescence excitation wavelength is 450nm, and the fluorescence emission wavelength is 530nm. The extension of the fluorescence spectrum is 650nm. Under the alternating irradiation of 450nm laser and 375nm laser, diarylethene can maintain good photoinduction and photoinhibition properties.

[0047] When the high repetition frequency wavelength tunable pulse laser is used for the optical switch test, when the pulse excitation light reaches a certain power, the diarylethene bright state fluorescence can be quenched. According to this phenomenon, super-resolution dark spot reading and writing can be realized. The steps are as follows:

[0048] record steps

[0049] 1) Perform pretreatment on the diarylethene derivative film (usua...

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Abstract

A dual-beam super-resolution optical storage material read-write device comprises an optical path and a computer; the optical path consists of a recording optical path, a reading-out optical path anda fluorescence collecting optical path. A read-write method is provided. The invention adopts pulsed light induction-continuous photoinhibition quenching recording mode, can quickly read information,solves the problem of recording and reading of materials simultaneously for the first time in the field of super-resolution optical storage, overcomes the erasing effect of photochromic materials in super-resolution recording, and obtains smaller recording spots and improve the storage density of optical discs.

Description

technical field [0001] The invention belongs to the technical field of optical storage, in particular to a read-write device and a read-write method for a double-beam super-resolution optical storage material with photochromic characteristic materials. Background technique [0002] Traditional storage technology is limited by the physical limit and technical limitations of the material itself. The size of the spot size for reading and writing is mostly near the diffraction limit, and the storage density cannot be further improved. In addition, the light wavelengths used for recording in existing optical storage technologies are mostly In the ultraviolet range, the cost of the light source of this wavelength is relatively high, and the light spot below the diffraction limit cannot be obtained. The storage capacity of optical disc storage is very limited. [0003] The dual-beam super-resolution optical storage technology can effectively increase the recording density, because...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/0045G11B7/005G11B7/1275G11B7/135
CPCG11B7/0045G11B7/005G11B7/1275G11B7/135
Inventor 刘铁诚阮昊
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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