An optical head for a laser transmission welding apparatus comprising a housing with an end on the outlet side with respect to a laser beam and a ball mounted in the housing. The ball may comprise a material whose refractive index is higher than the refractive index of quartz glass.

A laser marking system for marking a product comprising a laser source for providing a laser beam, a marking head for projecting the laser beam on to the product, a housing comprising an extraction device configured to generate a flow of extraction fluid for extracting matter generated by an interaction between the laser beam and the product, and a controller for controlling the laser source and the marking head. The laser marking system further comprises an umbilical assembly connecting the housing to the marking head.

A system for performing a laser peening application on a workpiece. A purge system is included with the system to provide a compartment housing combustion sources with compressed air so that the compartment has an increased air pressure. Also, a method of operating the system in which power is provided to the system, but only the purge system operates initially. Only after the purge system has bene operating, are the other subsystems and components of the systems, like the laser, provided with operational power.

Disclosed are methods and apparatus for cleaning a substrate, such as a fabric material, involving the application of optical energy to the substrate, typically in the form of a beam of light, where the energy of the beam causes removal of the contaminant from substrate, such as from the fibres of a fabric material. The cleaning may occur via any mechanism, including one or more of, alone or in any combination, ablation, melting, heating or reaction with the substrate or contaminant or agent introduced to aid in the cleaning. The optical energy is typically applied to a selected area of the substrate (e.g., as a beam), and the substrate and beam or optical energy source moved relative to one another so as to clean a larger area of the substrate, either by moving the substrate or the beam, or both. Movement of the beam with respect to the substrate can be attained through a beam scanning mechanism or through movement of the optical source itself.

A desktop laser cutter configured to cut a cylindrical workpiece includes a laser, a cutting head that receives an electromagnetic beam from the laser and emits a cutting beam, and a gantry that supports the cutting head relative to a base plate of the laser cutter housing. The gantry can be actuated to move the cutting head within a plane that is parallel to the baseplate. The cutting head emits the cutting beam in a direction parallel to the plane. In use, the cutting head is disposed side-by-side with the workpiece and the cutting beam is applied to a side of the workpiece that faces a sidewall of the laser cutter housing. The workpiece is supported by the gantry to rotate an amount that is a function of movement of the cutting head in a direction parallel to the plane.

A method of calibrating a focal point of a laser apparatus inscribed in a parallelepiped rectangle R defined by a longitudinal axis, X, a vertical axis, Y defining a plane P and a lateral axis, Z. The method uses a laser apparatus for treating a window that includes a mounting means to mount a decoating apparatus on the window mounted in situ.

There is provided high power laser systems, high power laser tools, and methods of using these tools and systems for cutting, sectioning and removing structures objects, and materials, and in particular, for doing so in difficult to access locations and environments, such as offshore, underwater, or in hazardous environments, such as nuclear and chemical facilities. Thus, there is also provided high power laser systems, high power laser tools, and methods of using these systems and tools for removing structures, objects, and materials located offshore, under bodies of water and under the seafloor.

An improved decoating apparatus including a mounting means to be mounted on a multi-glazed window mounted in situ and a laser device to decoat at least partially a coating system present on a surface of the multi-glazed window. The decoating apparatus further includes a closing means at least partially to reduce the maximum decoatable surface to a working surface. Further, an associated decoating method and use of a closing means to decoat is disclosed.

An improved laser apparatus, inscribed in a parallelepiped rectangle R defined by a longitudinal axis, X, a vertical axis, Y defining a plane P and a lateral axis, Z, including a mounting means to mount the laser apparatus on a window, preferably a multi-glazed window, mounted in situ. The laser apparatus also includes a laser device generating a laser beam to treat a surface of the window, an orientation means able to orientate the laser beam defining a maximum decoatable surface WSm on the coated surface and a housing including an aperture to let the laser beam going out of the housing. The laser apparatus includes a skirt at least partially surrounding the aperture where the skirt is opaque to the laser beam. A related method is also described.

An electromagnetic radiation steering mechanism An electromagnetic radiation steering mechanism configured to steer electromagnetic radiation to address a specific location within a two-dimensional field of view comprising a first optical element having an associated first actuator configured to rotate the first optical element about a first rotational axis to change a first coordinate of a first steering axis in the two-dimensional field of view, a second optical element having an associated second actuator configured to rotate the second optical element about a second rotational axis to change a second coordinate of a second steering axis in the two-dimensional field of view, and an electromagnetic radiation manipulator optically disposed between the first and second optical elements. A first angle is defined between the first and second rotational axes and a second angle is defined between the first and second steering axes. The electromagnetic radiation manipulator is configured to introduce a difference between the first angle and the second angle.