Articles having edges with compressive residual stress and methods of forming the same

A method of forming a glass article comprising at least one finished edge, the method comprising:

• heating a substrate to a preparation temperature that is greater than a strain point of a glass composition of the substrate, the substrate comprising at least one unfinished edge;
• applying a laser to the at least one unfinished edge of the substrate, the laser causing a temperature of the at least one unfinished edge to increase from the preparation temperature to a finishing temperature;
• and
• reducing a power of the laser over a time period of at least about 10 seconds until the laser is deactivated, resulting in the glass article comprising the at least one finished edge.

A system for forming a glass-based article comprising at least one finished edge, the system comprising:

• a laser emitting device;
• a heating component;
• a thermal imaging device;
• and
• a computing device that is communicatively coupled to the laser emitting device, the heating component, and the thermal imaging device, the computing device configured to:
• direct the heating component to heat a substrate having one unfinished edge,
• receive first image data from the thermal imaging device that indicates that an average surface temperature of the substrate is about 450° C. to about 800° C.,
• direct the laser emitting device to apply a laser to the at least one unfinished edge of the substrate, the laser causing an average temperature of the at least one unfinished edge of the substrate to increase to about 1300° C.,
• receive second image data from the thermal imaging device that indicates that an average surface temperature of the at least one unfinished edge is about 1300° C., and
• direct the laser emitting device to reduce a power of the laser over a time period of at least about 10 seconds until the laser is deactivated, resulting in the glass-based article comprising the at least one finished edge.