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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 10 — Apr. 1, 2002
  • pp: 1998–2007

Thermal properties and crystallization dynamics of a phase-change alloy for write-once optical data storage

Gerd M. Fischer, Brian Medower, Robert Revay, and Masud Mansuripur  »View Author Affiliations


Applied Optics, Vol. 41, Issue 10, pp. 1998-2007 (2002)
http://dx.doi.org/10.1364/AO.41.001998


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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

OCIS Codes
(210.0210) Optical data storage : Optical data storage
(210.4770) Optical data storage : Optical recording
(210.4810) Optical data storage : Optical storage-recording materials
(310.6870) Thin films : Thin films, other properties
(320.4240) Ultrafast optics : Nanosecond phenomena

History
Original Manuscript: March 27, 2001
Revised Manuscript: October 12, 2001
Published: April 1, 2002

Citation
Gerd M. Fischer, Brian Medower, Robert Revay, and Masud Mansuripur, "Thermal properties and crystallization dynamics of a phase-change alloy for write-once optical data storage," Appl. Opt. 41, 1998-2007 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-10-1998

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