Patent ID: 8580355

Claim:
A process for obtaining a substrate coated with a thin film of crystallized titanium oxide comprising: A) depositing a thin film containing titanium oxide on a side of a substrate having opposite sides, wherein said substrate comprises an energy providing film that has been applied below said thin film and/or is applied above said thin film thereby producing a substrate comprising the thin film containing titanium oxide and an energy providing film; B) heating one side of the substrate comprising the thin film containing titanium oxide and an energy providing film to a temperature of at least 300° C. with a laser that emits radiation having a wavelength between 0.5 and 3 microns while maintaining a temperature not exceeding 150° C. at any point on the opposite side of the substrate under conditions allowing transmission of energy from the energy providing film to the thin film containing titanium oxide; and recovering a heat-treated substrate comprising a thin film of crystallized titanium oxide.