A light source device including: a first light source configured to coaxially combine a plurality of first laser beams, each having a peak wavelength within a first wavelength range, to thereby generate and emit a first wavelength-combined beam; a second light source configured to coaxially combine a plurality of second laser beams, each having a peak wavelength within a second wavelength range that defines a range of peak wavelengths shorter than the peak wavelengths in the first wavelength range, to thereby generate and emit a second wavelength-combined beam; and a wavelength filter configured to coaxially combine the first wavelength-combined beam and the second wavelength-combined beam to thereby generate and emit a third wavelength-combined beam.

A right angle reflection prism includes first and second surfaces that form a right angle, and a third surface connected to the first and second surfaces. The right angle reflection prism causes a laser beam, which is made incident on the first surface and with which a material to be processed is irradiated, to be totally reflected by the third surface so as to be emitted from the second surface. A sensor detects a power of a laser beam that has passed through the third surface.

A method of laser processing including generating a laser beam having, at different longitudinal positions in a propagation direction, first and second transverse beam profiles of energy density. The first transverse beam profile is different to the second transverse beam profile and is non-Gaussian. The method includes carrying out a scan of the laser beam across a working surface, wherein, during the scan, the laser beam and/or working surface is adjusted such that, for a first part of the scan, the first transverse beam profile is located at the working surface and, for a second part of the scan, the second transverse beam profile is located at the working surface.

An apparatus for laser machining a workpiece includes a beam shaping device for forming a focal zone from an input laser beam incident on the beam shaping device, and a telescope device for imaging the focal zone into a material of the workpiece. The beam shaping device is configured to impose a phase on a beam cross section of the input laser beam in such a way that the focal zone extends along a longitudinal centre axis which is curved at least in certain portions. The telescope device is assigned a beam splitting device for splitting an output laser beam output coupled from the beam shaping device into a plurality of polarized partial beams, each of which has one of at least two different polarization states. The focal zone has an asymmetrical cross section in a plane oriented perpendicular to the longitudinal centre axis.

The present invention provides a substrate treating facility, including: a process chamber including an annular beam emitting unit which emits an annular laser beam to a substrate and heats the substrate; and a laser beam generator configured to generate the laser beam emitted to the substrate through the annular beam emitting unit of the process chamber.

A 3D object printer is disclosed. The 3D object printer advantageously incorporates one or more optical systems and optical devices that improve the operation and output of the 3D object printer including, for example, a laser heating system or an optical monitoring system. A variety of arrangements of optical structures and systems are provided to guide light beam(s), such as laser beams, illumination beams, reflected light beams, etc., into or out of the fabrication environment of the 3D object printer. These optical structures and systems overcome structural and spatial constraints of the 3D object printer, which might otherwise prevent effective operation of the laser heating system or the optical monitoring system.

An automated or manual laser ablation system and method of use to enable safe, non-user-contact, rapid, and remote cleaning of industrial tubular equipment, e.g. heat-exchangers and reactors. The laser ablation system comprises: a fiber optic cable (12) with a laser probe output end (20), connected to an optics unit (5 or 6) enclosed within a laser probe housing (14). The optics unit comprises: a double convex and/or one or two plano-convex lens; and an Axicon prism, mirror cone, and/or galvo-scanning mirror to emit a rotating or a fixed circular beam. The laser beam cleans a plurality of reactor tubes' internal wall to cause the evaporation of deposit buildups and rust. The laser ablation system further comprises: an air vacuum system (30) positioned to cool the ablation system while removing the debris to a vacuum generator (35); and/or a push motor (60) that pushes and pulls the system through the tubes.

A laser system is configured for providing a laser line in a working plane for line illumination of an object. The laser line extends in a first direction over a significant length and in a second direction over a small extent. The laser system comprises a laser source for providing a laser beam as basis for an elongated input laser beam propagating along a propagation direction, and a homogenization and focussing unit for homogenizing the elongated laser beam to form the laser line. The laser system is in particular suitable for providing a laser line that can be stitched to another laser line of a respective further laser system.

A multiple wavelength laser processing system is configured with a multiple wavelength laser source for generating a multiple wavelength coaxial laser processing beam. The laser processing system further includes a multiple wavelength optical system to deliver the coaxial laser processing beam to a laser-material interaction zone on the surface of a workpiece such that each of the first and a second laser wavelengths in the processing beam impinge at least a portion of the interaction zone as respective first and second concentric laser spots. The multiple wavelength optical system includes a multiple wavelength beam collimator, a configurable chromatic optic, and a laser processing focus lens, wherein the configurable chromatic optic provides an adjustment to the relative focus distance of the first and second laser wavelengths.

A 3D additive manufacturing machine and an additive manufacturing method for manufacturing objects layer by layer, to obviate a need for a rotating prism. The machine can fill spaces in any one layer between paths generated by neighboring illumination spots from an array by sweeping subsequent paths between previously manufactured paths or by meandering along the paths. As a consequence, sufficient intensity may be provided for 3D additive manufacturing, even when using LEDs as a light sources.