Abstract
We have calculated temperature profiles in a land/groove phase-change (PC) disk. The incident beam is linearly polarized either parallel to track (E/sub /spl par// polarization) or tangential to track (E/sub /spl perp// polarization). Calculations have shown that thermal cross-track cross-talk from land-track to groove-track is higher than that from groove-track to land-track. The interaction between the E/sub /spl perp// electric field and the grooved structure is mainly responsible for thermal cross-track cross-talk. The temperature profile, depending on wavelength of light, the geometry of grooved structure, and the multilayer stack, is quite different between the land-track and the groove-track.
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