A computer-implemented method for generating laser engraving instructions for performing a patterning process on a workpiece surface includes receiving a first input value indicating a first laser-pulse pattern and a second input value for a laser parameter associated with a laser-engraving system; and generating a machine-command sequence for the laser-engraving system based on the first input value and the second input value.

A computer-implemented method for generating laser engraving instructions for performing a patterning process on a workpiece surface includes receiving a first input value indicating a first laser-pulse pattern and a second input value for a laser parameter associated with a laser-engraving system; and generating a machine-command sequence for the laser-engraving system based on the first input value and the second input value.

A laser processing device having a function for efficiently starting laser processing, while eliminating an adverse effect due to a reflected laser beam from a workpiece. The laser processing device has: a reflected beam intensity detecting part for detecting an intensity of a reflected beam, which is a part of a laser beam irradiated from a laser oscillator and then is reflected by a workpiece surface; a beam intensity increasing part for continuously increasing an intensity of the irradiating laser beam over a predetermined period of time; a next process selecting part for selecting a content of a next process, based on a temporal change in the intensity of the detected reflected beam, during the intensity of the irradiating laser beam is increased; and an executing part for executing the next process subsequent to the laser processing, based on the selected content of the next process.

A laser processing device having a function for efficiently starting laser processing, while eliminating an adverse effect due to a reflected laser beam from a workpiece. The laser processing device has: a reflected beam intensity detecting part for detecting an intensity of a reflected beam, which is a part of a laser beam irradiated from a laser oscillator and then is reflected by a workpiece surface; a beam intensity increasing part for continuously increasing an intensity of the irradiating laser beam over a predetermined period of time; a next process selecting part for selecting a content of a next process, based on a temporal change in the intensity of the detected reflected beam, during the intensity of the irradiating laser beam is increased; and an executing part for executing the next process subsequent to the laser processing, based on the selected content of the next process.

A laser processing method which can efficiently perform laser processing while minimizing the deviation of the converging point of a laser beam in end parts of an object to be processed is provided. This laser processing method comprises a preparatory step of holding a lens at an initial position set such that a converging point is located at a predetermined position within the object; a first processing step (S11 and S12) of emitting a first laser beam for processing while holding the lens at the initial position, and moving the lens and the ltd object relative to each other along a main surface so as to form a modified region in one end part of a line to cut; and a second processing step (S13 and S14) of releasing the lens from being held at the initial position after forming the modified region in the one end part of the line to cut, and then moving the lens and the object relative to each other along the main surface while adjusting the gap between the lens and the main surface after the release, so as to form the modified region.

A laser processing method which can efficiently perform laser processing while minimizing the deviation of the converging point of a laser beam in end parts of an object to be processed is provided. This laser processing method comprises a preparatory step of holding a lens at an initial position set such that a converging point is located at a predetermined position within the object; a first processing step (S11 and S12) of emitting a first laser beam for processing while holding the lens at the initial position, and moving the lens and the ltd object relative to each other along a main surface so as to form a modified region in one end part of a line to cut; and a second processing step (S13 and S14) of releasing the lens from being held at the initial position after forming the modified region in the one end part of the line to cut, and then moving the lens and the object relative to each other along the main surface while adjusting the gap between the lens and the main surface after the release, so as to form the modified region.

An actuator utilizes a voice coil motor with one or more voice coil windings supported on a light weight moveable bobbin that connects at one end to move an object rapidly up to a small number of millimeters translationally along a system axis. The bobbin moves over a distal portion of a center pole of a stator, which supports the voice coil motor magnets. The pole, which acts as a flux path for the voice coil motor, also provides a thin film of air in a gap between the pole and the bobbin via an air path and corresponding holes at the distal end of the pole. The bobbin moves translationally relative to the pole on the thin film of air under the control of the voice coil motor.

A device and a method for beam shaping and beam movement during laser material processing with a laser beam source (1) for continuously emitting a laser beam (2), a first optical deflection element (3), a second optical deflection element (4), and an optical focusing element (5) arranged between the second optical deflection element (4) and a workpiece surface (7) to be processed. The second optical deflection element (4) is configured to displace a point of incidence of the laser beam (2) on the workpiece surface (7), and the first optical deflection element (3) is configured to alter a position of a focal plane of the laser beam (2) relative to the workpiece surface (7) by means of a translational movement and/or to change an intensity distribution within a beam cross section of the laser beam.

Methods and systems for welding are disclosed, including generating electromagnetic radiation from an ultrashort pulse laser; coupling the electromagnetic radiation from the ultrashort pulse laser to a scanner comprising a scanning and focus range, wherein the scanner is configured to receive the electromagnetic radiation from the ultrashort laser and to scan and focus the electromagnetic radiation onto a joining interface of one or more materials; using a computer to adjust the pulse repetition rate and the average power of the ultrashort pulse laser; using one or more stages to position the joining interface; using a dichroic filter positioned between the scanner and the one or more materials; and focusing an imager and processor through the dichroic filter and onto the joining interface to monitor the joining interface of the one or more materials within the scanning and focus range of the electromagnetic radiation. Other embodiments are described and claimed.

Methods and systems for welding are disclosed, including generating electromagnetic radiation from an ultrashort pulse laser; coupling the electromagnetic radiation from the ultrashort pulse laser to a scanner comprising a scanning and focus range, wherein the scanner is configured to receive the electromagnetic radiation from the ultrashort laser and to scan and focus the electromagnetic radiation onto a joining interface of one or more materials; using a computer to adjust the pulse repetition rate and the average power of the ultrashort pulse laser; using one or more stages to position the joining interface; using a dichroic filter positioned between the scanner and the one or more materials; and focusing an imager and processor through the dichroic filter and onto the joining interface to monitor the joining interface of the one or more materials within the scanning and focus range of the electromagnetic radiation. Other embodiments are described and claimed.