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Two-photon two-beam super-resolution optical storage material reading and writing device and reading and writing method

An optical storage material and a technology for a reading and writing device, applied in the field of optical storage, can solve the problems of the inability to further increase the storage density, the limitation of the storage capacity of the optical disc, the inability to obtain light spots, etc. Effects with short retention time

Active Publication Date: 2020-04-03
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

[0002] Traditional storage technology is limited by the physical limit and technical limitation of the material itself. The size of the recording and readout spot size is mostly near the diffraction limit, and the storage density cannot be further improved. In addition, the existing optical storage technology used for recording The wavelength of light is mostly in the ultraviolet range, and the cost of the light source of this wavelength is relatively high, and it is impossible to obtain the spot below the diffraction limit
The storage capacity of disc storage is very limited

Method used

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  • Two-photon two-beam super-resolution optical storage material reading and writing device and reading and writing method
  • Two-photon two-beam super-resolution optical storage material reading and writing device and reading and writing method
  • Two-photon two-beam super-resolution optical storage material reading and writing device and reading and writing method

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Embodiment 1

[0037] see first figure 1 , figure 1 It is an optical path diagram of the two-photon two-beam super-resolution optical storage material reading and writing device of the present invention. It can be seen from the figure that the two-photon double-beam super-resolution optical storage material reading and writing device of the present invention includes an optical path and a computer 36, and the optical path is composed of a recording optical path, a readout optical path and a fluorescence collection optical path:

[0038]The recording optical path includes a wavelength-tunable pulsed laser 1, the laser output by the pulsed laser 1 outputs pulsed light through the first fiber coupler 2 and the first flipped mirror frame 3, and the pulsed light passes through the second flipped mirror frame 7. The first acousto-optic modulator 8 and the first beam expander lens group 9 are used as the central induced light; the laser light output by the first continuous laser 10 passes through ...

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Abstract

The invention provides a double-photon double-beam super-resolution optical storage material reading and writing device, comprising an optical path and a computer, wherein the optical path is composedof a recording optical path, a readout optical path and a fluorescent collection optical path. The invention further provides a reading and writing method. The double-photon double-beam super-resolution optical storage material reading and writing device provided by the invention adopts a quenching recording mode of pulsed light induction-continuous light suppression to quickly read information,and meanwhile, the problem of material recording and reading is solved, by adoption of the quenching record, the stability of the recording state is greatly improved, it is guaranteed that there is norubbing effect during super-resolution writing, furthermore, an information record can be kept for a long time, a smaller recording spot is obtained, and the storage density of an optical disk is improved.

Description

technical field [0001] The invention belongs to the technical field of optical storage, in particular to a two-photon two-beam super-resolution optical storage material read-write device and a read-write method with a photochromic characteristic material. Background technique [0002] Traditional storage technology is limited by the physical limit and technical limitation of the material itself. The size of the recording and readout spot size is mostly near the diffraction limit, and the storage density cannot be further improved. In addition, the existing optical storage technology used for recording The wavelength of light is mostly in the ultraviolet range, and 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] Two-photon two-beam super-resolution optical storage technology can effectively increase the recording densit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/1365G11B20/10G11B27/26
CPCG11B7/1365G11B20/10009G11B27/26
Inventor 刘铁诚阮昊
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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