Stability and Signal Quality Enhancement of Super-Resolution Disc by Pre- and Post-Curings of Readout Layer

概要

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By applying pre- and post-curings to the fabrication of a readout layer of a super-resolution disc that uses a phase-change material for the readout layer, the short-term readout stability and the signal quality were greatly improved. We obtained a disc whose signal degradation does not occur after the curing and the noise level was reduced by 1–2 dB, carrier-to-noise ratio (CNR) was enhanced by 2–3 dB, and the jitter was enhanced by 2–3%. Moreover, for long-term readout stability, we chose GeN interfacial layers between the readout and dielectric layers and obtained stable signal quality in terms of CNR of up to over 0.2 million readings.
2008-07-25