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.
CN101409086AInactive Publication Date: 2009-04-15SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
Publication Date
2009-04-15
Estimated Expiration
Not applicable · inactive patent

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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.
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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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