Systems (10) and methods (100) of incising a portion of a material include creatinga sub-surface separation in a region of the materiai, and incising a peripheryof the region with a pulsed laser beam to produce an edge of the portion. The edgeincludes a periodically varying shape to secure the portion to the material whenthe portion is reintegrated. The system (10) includes a laser (14) producingthe pulsed laser beam, a scanner (20) operable in response to a control signal,and a controller (22) coupled to the scanner. The controller produces the controlsignal. In response to the control signal, the scanner creates a sub-surfaceseparation in the region with the pulsed laser beam and incises the peripheryof the region with the pulsed laser beam to produce the edge (72, 78, 84) with theperiodically varying shape.
