With the advantages of low cost, portability and compliance with ROM disk, write once media have become the most popular storage media for computer and audio/video application. Several write once recording materials, such as TeO[1], TeOPd[2], and Si/Cu [3] AlSi[4] have been proposed to realize inorganic write once media which are high to low disks. However, Toshiba and NEC have proposed a low to high rewritable media for blue laser disk.[5] Therefore, we develop a novel write once media to meet these properties. In this paper, we report the static and recording characteristics of write once media.
Dual polarity was observed and controlled by adjusting the composition in Al-Si binary system. Recording types of both high-to-low and low-to-high were also reported.
KEYWORDS: Reflectivity, Laser systems engineering, Clocks, Data storage, Legal, Digital video discs, Optical testing, Pulsed laser operation, Roads, Objectives
With the advantages of low cost, portability and compliance with ROM disc, write once disk has become the most popular storage media for computer and audio/video application. In addition, write once media, like CD-R and DVD-/+ R, are used to store permanent or nonalterable
information, such as financial data transitions, legal documentation, and medical data. Several write once recording materials, such as TeO[1], TeOPd[2] and Si/Cu [3] have been proposed to realize inorganic write once media. Moreover, we propose AlSi alloy [4] to be used for recording layer of write once media. It had good recording properties in DVD system although the reflectivity is too low to be used for DVD-R disk. In this paper, we report the further results in blue laser system, such as the static and dynamic characteristics of write once
media.
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