Title :
Thermal limitations in optical recording
Author :
Nelson, Douglas J. ; Vick, Brian
Author_Institution :
Dept. of Mech. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
fDate :
9/1/1995 12:00:00 AM
Abstract :
The fundamental thermal process used to write information to optical media is investigated using a simplified thermal model. The thermal model is solved using a Green´s function method which requires only numerical quadrature to evaluate an analytical solution. The results show the effects of the duration and period of the heat source, and the rotational speed of the media on the spot size and transient thermal response produced on the surface of the media in terms of nondimensional parameters. To resolve very small time and length scales, a microscale model for conduction and radiation heat transfer in a multilayer structure is proposed
Keywords :
Green´s function methods; heat conduction; heat radiation; integration; laser beam effects; optical disc storage; thermal analysis; transient response; Green´s function method; conduction heat transfer; heat source duration; information writing; microscale model; multilayer structure; nondimensional parameters; numerical integration; numerical quadrature; optical recording; radiation heat transfer; rotating optical disk; rotational speed; spot size; thermal limitations; thermal model; thermal process; transient thermal response; very small length scale; very small time scale; Angular velocity; Disk recording; Green´s function methods; Laser modes; Optical distortion; Optical materials; Optical recording; Power lasers; Temperature; Thermal conductivity;
Journal_Title :
Components, Packaging, and Manufacturing Technology, Part A, IEEE Transactions on
