Abstract: A glazed unit in particular for a vehicle of transport, includes a first glass pane and a second glass pane that are contiguous, the second glass pane being laminated and includes an exterior glass sheet, an interior glass sheet and a plastic material interlayer arranged between the exterior glass sheet and the interior glass sheet, the glazed unit having an exterior face and an interior face, wherein the glazed unit includes a seal arranged between the first glass pane and the second glass pane, having an exterior face and an interior face, the exterior face of the glazed unit and the exterior face of the seal being flush with one another and the seal being in contact with an interior face of the exterior glass sheet of the second glass pane.

Abstract: A method for focusing acoustic waves on an interface between two layers of a multilayer structure includes providing laser means able to emit a laser beam toward an exterior surface of the multilayer structure to produce a longitudinal wave from the centre of a laser-beam spot projected onto the exterior surface and a transverse wave from the periphery of said spot, determining the distance between said interface and the exterior surface, determining one or more propagation velocities of each of the longitudinal wave and the transverse wave in the one or more layers passed through by said waves to reach said interface, and determining a radius of the laser-beam spot depending on the one or more propagation velocities and on said distance so that the time taken by the longitudinal wave to reach said interface is equal to three times the time taken by the transverse wave to reach said interface.

Abstract: A system for treating a target by laser shock in a regime of confinement in a liquid, the system includes a pulsed laser generating a beam having a pulse duration of between 1 ns and 30 ns and a wavelength, a concentrating optical device having a focal length and configured to concentrate the beam on the surface of the target, the incident laser beam on the concentrating device having a diameter, a tank filled with the liquid having a refractive index n, a desired value of the diameter of the beam on a surface of the target being predetermined and named Dst, a thickness of liquid passed through by the beam before reaching the surface of the target being chosen such that a laser intensity on the surface of the liquid (Isl) is less than or equal to a laser intensity on the surface of the target (Ist) divided by 2.

Abstract: An analyzer of the spatial intensity distribution of a laser beam focused or transmitted by an optical fiber comprises: a shaping lens; a device for taking a partial sample of the beam; a heat sink; a photodiode; an imaging lens to form images of the plane on an image sensor; a motorization of the shaping lens to translate along the optical axis; a motorization of the imaging lens to translate in a plane perpendicular to the optical axis; a motorization of the image sensor to translate along the optical axis; an electronic unit controlling each motorization; an electronic unit synchronizing the image sensor, connected to the photodiode to synchronize image capture with the laser pulses or in the pulses; an electronic unit adjusting the aperture and/or gain of the image sensor; and a software interface parameterizing and piloting the electronic control units, equipped with an image processing unit.

Abstract: An analyzer of the spatial intensity distribution of a laser beam focused or transmitted by an optical fiber comprises: a shaping lens; a device for taking a partial sample of the beam; a heat sink; a photodiode; an imaging lens to form images of the plane on an image sensor; a motorization of the shaping lens to translate along the optical axis; a motorization of the imaging lens to translate in a plane perpendicular to the optical axis; a motorization of the image sensor to translate along the optical axis; an electronic unit controlling each motorization; an electronic unit synchronizing the image sensor, connected to the photodiode to synchronize image capture with the laser pulses or in the pulses; an electronic unit adjusting the aperture and/or gain of the image sensor; and a software interface parameterizing and piloting the electronic control units, equipped with an image processing unit.