Patent ID: 8735774

Claim:
A laser processing system, comprising: a chuck; a positioning system having at least one stage motor; a substrate having two major surfaces parallel to each other and conditioned to exhibit flatness; a laser beam that propagates along a beam axis for incidence on a target specimen mounted on the chuck, the chuck operatively connected to the positioning system, and the at least one stage motor mounted to the substrate and connected to the positioning system to move at least one of the laser beam and the target specimen relative to each other to position the laser beam at selected locations on the target specimen; and at least one force reaction compensation motor placed in a common force plane with a corresponding stage motor, thereby reducing any moment arm between the at least one force reaction compensation motor and the corresponding stage motor and allowing the force reaction compensation motor to directly couple and react to stage forces with virtually zero moment arm; wherein the at least one force reaction compensation motor is mounted to the substrate at a position further away from a center of the substrate than the corresponding stage motor.