| Autor: |
Yasuda, Kouichi, Ono, Masumi, Aratani, Katsuhisa, Atsushi Fukumoto, Atsushi Fukumoto, Masahiko Kaneko, Masahiko Kaneko |
| Zdroj: |
Japanese Journal of Applied Physics; November 1993, Vol. 32 Issue: 11 p5210-5210, 1p |
| Abstrakt: |
Premastered optical disk by superresolution (PSR) for practical use has been achieved for the first time. The PSR disk has a phase-change material Ge2Sb2Te5with stoichiometric composition. Superresolution results from a high contrast ratio of reflectance in the light spot between highly reflective crystal region and lowly reflective melted region. A high C/Nratio of 56 dB is obtained at a pit length of 0.4 µm using PSR. The C/Nratio is still as high as 50 dB for a pit length of 0.3 µm. The PSR disk with double linear densities of current CD is successfully read out with a clear eye pattern and a low error rate using current optics. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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