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Stibium bismuth phase-change alloy mask read-only ultra-resolution CD-disc

A technology for masking read-only and phase-change alloys, which is applied in the field of optical storage of information technology, can solve the problems of the quality and life of read-only super-resolution optical discs, and achieves the effects of simple structure, high sensitivity and good readout cycle.

Inactive Publication Date: 2009-04-15
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

[0003] The problem to be solved by the present invention is to overcome the above-mentioned technical defects of the read-only super-resolution optical disc caused by the excessively high readout power, and to propose a read-only super-resolution optical disc with an antimony-bismuth phase change alloy mask, The disc should have simple structure, low readout power, high sensitivity and good readout cycle

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  • Stibium bismuth phase-change alloy mask read-only ultra-resolution CD-disc
  • Stibium bismuth phase-change alloy mask read-only ultra-resolution CD-disc
  • Stibium bismuth phase-change alloy mask read-only ultra-resolution CD-disc

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0017] see first figure 1 , figure 1 It is the structural diagram of the antimony-bismuth phase-change alloy mask read-only super-resolution disc of the present invention. It can be seen from the figure that the antimony-bismuth phase-change alloy mask read-only super-resolution optical disc of the present invention has a structure comprising a dielectric layer 01, a mask layer 02 and a disc base 03, and the dielectric layer 01 is made of silicon nitride; The mask layer 02 is made of antimony-bismuth alloy, that is, SbxBi(1-x) film, where the value of x varies from 0.7 to 0.9.

[0018] The thickness of the mask layer 02 is 30-90 nm. This mask layer 02 is used for the super-resolved readout of spots smaller than the diffraction limit.

[0019] The thickness of the dielec...

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Abstract

A antimony and bismuth intersection alloy mask read-only super-resolution CD structurally comprises a dielectric layer, a mask layer and a disk base and is characterized in that the dielectric layer consists of silicon nitride; the mask layer consists of antimony and bismuth alloy, that is, SbxBi(1-x) film, wherein, the variation range of x is from 0.7-0.9. The super-resolution CD is characterized by simple structure, low read-out power, high sensibility, good read-out cyclicity, etc.

Description

technical field [0001] The invention belongs to the field of optical storage of information technology, and is a read-only super-resolution optical disc of an antimony-bismuth phase-change alloy mask. Compared with the currently used mask materials, the antimony-bismuth phase-change alloy mask read-only super-resolution optical disk of the present invention has the characteristics of simple structure, low readout power, high sensitivity, good readout cyclicity, etc., and has important Application prospect. Background technique [0002] With the development of high-density optical storage technology, the information recording point is getting smaller and smaller, which is much smaller than the diffraction limit of the optical head. In the field of optical storage, the improvement of storage density largely depends on the readout technology of information. When the recorded information points are very small, and a readout laser spot contains two or more recording points, the...

Claims

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Application Information

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IPC IPC(8): G11B7/24G11B7/241G11B7/2433
Inventor 姜来新吴谊群王阳魏劲松
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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