The variation of temperature with time at several different points in the disc.

The temperature rises fastest in the centre of the dye. The high thermal conductivity of the gold keeps temperatures at the dye/gold interface very low. The polycarbonate heats up but not to the same extent as the dye. It does however rise above its glass transition temperature (Tg) which is at 140 degrees. The dye exceeds its melting point (Tm) and it's decomposition temperature (Td).