Application of simulation on the design of phase-change optical recording disks

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

2 Scopus Citations
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Author(s)

  • Lih-Hsin Chou
  • Chun-Ping Jen
  • Ching-Chang Chieng

Detail(s)

Original languageEnglish
Pages (from-to)414-416
Journal / PublicationIEEE Transactions on Magnetics
Volume34
Issue number2
Publication statusPublished - Mar 1998
Externally publishedYes

Abstract

Optical absorption and thermal conduction are the two key factors affecting temperature distribution and, subsequently, the write, erase characteristics of a phase-change optical recording disk. Therefore, by using carefully measured film physical properties of each layer, this work simulates a transient temperature profile while simultaneously considering optical absorption and thermal conduction. Through the simulated transient temperature profile, cooling-rate and reflectivity, dependence of phase-changed spot size on the laser power and laser pulse duration was observed. The proper combination of the disk structure and the associated write, erase conditions are obtained as well. A disk structure can subsequently be designed on the basis of this information. In addition, a novel dielectric layer, i.e. hydrogenated amorphous carbon (α-C:H), is simulated and compared with the disk applying conventionally used ZnS-SiO2 dielectric layers. The disk structures used herein are PC/ZnS-SiO2/GeSbTe/ZnS-SiO2/Al and PC/α-C:H/GeSbTe/α-C:H/Al. According to those results, α-C:H film is highly promising as a dielectric layer of the phase change optical recording disk for both wavelengths of 780 and 660 nm. © 1998 IEEE.

Citation Format(s)

Application of simulation on the design of phase-change optical recording disks. / Chou, Lih-Hsin; Jen, Chun-Ping; Chieng, Ching-Chang.
In: IEEE Transactions on Magnetics, Vol. 34, No. 2, 03.1998, p. 414-416.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review