A surface treatment tool comprising: a laser assembly including a laser emitter configured for substantial perpendicular alignment with a target surface of a blade structure , the blade structure being mounted on a rotor ; being characterised by : an actuator assembly , wherein the laser assembly is mounted on the actuator assembly , and wherein the actuator assembly comprises an axial member and a radial member , wherein the laser assembly is connected to the radial member and wherein the radial member either takes the form of a non-fixed or adjustable length member configured to extent and retract and thus manipulate the position of the laser assembly along the extent of the radial member, or an actuator is structured to move along the radial member , whereas the actuator is mechanically coupled to the laser assembly , and wherein further the actuator assembly comprises a secondary actuator slidably coupling the radial member to the axial member , the surface treatment tool further comprising a controller communicatively coupled to the laser emitter , wherein the controller is configured to adjust an energy output and a pulse time of the laser emitter to sublimate a contaminant from the target surface of the blade structure . a laser assembly including a laser emitter configured for substantial perpendicular alignment with a target surface of a blade structure , the blade structure being mounted on a rotor ; being characterised by : an actuator assembly , wherein the laser assembly is mounted on the actuator assembly , and wherein the actuator assembly comprises an axial member and a radial member , wherein the laser assembly is connected to the radial member and wherein the radial member either takes the form of a non-fixed or adjustable length member configured to extent and retract and thus manipulate the position of the laser assembly along the extent of the radial member, or an actuator is structured to move along the radial member , whereas the actuator is mechanically coupled to the laser assembly , and wherein further the actuator assembly comprises a secondary actuator slidably coupling the radial member to the axial member , the surface treatment tool further comprising a controller communicatively coupled to the laser emitter , wherein the controller is configured to adjust an energy output and a pulse time of the laser emitter to sublimate a contaminant from the target surface of the blade structure . an actuator assembly , wherein the laser assembly is mounted on the actuator assembly , and wherein the actuator assembly comprises an axial member and a radial member , wherein the laser assembly is connected to the radial member and wherein the radial member either takes the form of a non-fixed or adjustable length member configured to extent and retract and thus manipulate the position of the laser assembly along the extent of the radial member, or an actuator is structured to move along the radial member , whereas the actuator is mechanically coupled to the laser assembly , and wherein further the actuator assembly comprises a secondary actuator slidably coupling the radial member to the axial member , the surface treatment tool further comprising a controller communicatively coupled to the laser emitter , wherein the controller is configured to adjust an energy output and a pulse time of the laser emitter to sublimate a contaminant from the target surface of the blade structure . <EOS>