Abstract
Using a two-laser static tester, we measured the crystallization temperature and the thermal conductivity of a phase-change alloy thin film used in write-once–read-many media of optical data storage. The experimental technique, in general, and the calibration procedures, in particular, are described. The measurement results are used as entry points into numerical calculations that ultimately yield estimates of the material parameters. Valuable information about the dynamics of mark formation (i.e., localized crystallization) in amorphous phase-change alloy films is obtained from the observed variations of the sample reflectance under short-pulse and long-pulse recording conditions. The dependence of these reflectance variations on the laser pulse power has also been investigated.
© 2002 Optical Society of America
Full Article | PDF ArticleMore Like This
Masud Mansuripur, J. Kevin Erwin, Warren Bletscher, Pramod Khulbe, Kayvan Sadeghi, Xiaodong Xun, Anurag Gupta, and Sergio B. Mendes
Appl. Opt. 38(34) 7095-7104 (1999)
Pramod K. Khulbe, Terril Hurst, Michikazu Horie, and Masud Mansuripur
Appl. Opt. 41(29) 6220-6229 (2002)
Pramod K. Khulbe, Xiaodong Xun, and M. Mansuripur
Appl. Opt. 39(14) 2359-2366 (2000)