Investigation on rewritable multilevel reflection modulation recording phase-change optical disk

Luping Shi; Tow Chong Chong; E. M. Wee; Xiangshui Miao; P. K. Tan; K. G. Lim; Jun Li; Wei Qiang

doi:10.1117/12.453411

10 January 2002 Investigation on rewritable multilevel reflection modulation recording phase-change optical disk

Luping Shi, Tow Chong Chong, E. M. Wee, Xiangshui Miao, P. K. Tan, K. G. Lim, Jun Li, Wei Qiang

Proceedings Volume 4342, Optical Data Storage 2001; (2002) https://doi.org/10.1117/12.453411
Event: Optical Data Storage, 2001, Santa Fe, NM, United States

Abstract

Multi-level recording on rewritable phase change optical disk was studied using a simulation and experiments. The possibility of using multi-level reflection effects to increase the storage capacity was considered using a computer simulation software called phase change optical disk design. Optical and thermal simulations were carried out on disks with phase change material GeSbTe to study its performance. Using a suitable disk structure, the mark shapes of various sizes that give rise to multi-level reflection effects were written on the disk and examined. In order to solve the problem of the difference in the absorption between the crystalline and amorphous states, a thermal compensation layer of Sb was used. Simulation and experiment results have shown that the effect of the difference can be significantly reduced by the thermal compensation layer.

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Luping Shi, Tow Chong Chong, E. M. Wee, Xiangshui Miao, P. K. Tan, K. G. Lim, Jun Li, and Wei Qiang "Investigation on rewritable multilevel reflection modulation recording phase-change optical disk", Proc. SPIE 4342, Optical Data Storage 2001, (10 January 2002); https://doi.org/10.1117/12.453411

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