Abstract
We have developed a new inorganic write-once optical disk for an optical recording system with a numerical aperture of 0.85 and a 405 nm blue-violet laser diode. The recording layer is composed of multi-layered structure of alternating Mg-based alloy layer and Si layer. Our experimental results showed that the recording sensitivity of the optical disk is strongly dependent on the stack structure of the recording layer, which can be optimized through adjusting the number of the component layers. Dynamic experiment results showed that the write-once optical disk has a low-to-high polarity and jitter value below 7.5% can be achieved at both 1× and 2× speeds. Effects of the multi-layered recording layer structure and the low-to-high polarity on recording performance are discussed.
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