laser (Total 224993 Patents Found)

Metal alloy workpieces are laser welded to one another with a laser head emitting a laser beam. The laser head and workpieces are moved relative to one another at a predetermined velocity along a weld path. The laser beam power is selectively modulated to have an output with a desired frequency andr amplitude. An oscil...
A lightweight hand-held scanning device for repetitively scanning a laser light source across a target having a laser light generating means and at least one high speed scanning motor controlled by a motor amplitude regulator circuit which automatically controls the amplitude of oscillation of the shaft of the high spe...
A self-supporting laser diffuser flow energizer is described for improving the performance of radial flow lasers by providing novel means for pressure recovery, and comprises a self-sustaining suction means communicating with the laser cavity for changing the supersonic shock front configuration existing within a radia...
A cylindrical two-dimensional diode-laser assembly includes fractionally-cylindrical dielectric segments bonded in a circular aperture in a metal heat-sink. Diode laser bars are located in gaps between the segments with light from the diode-lasers directed inwardly. The segments are made by cutting slots in one end of ...
A process for material working with plasma induced by high-energy radiati especially laser radiation, in which the radiation originating from the region of the workpiece is observed along the axis of the laser radiation focused along the axis on the workpiece as a function of the time. To obtain a measure of the penet...
A method is disclosed for removing material from moving metal workpieces, particular for cutting sheet metal. It entails preheating, without melting, the surface of the workpiece to a temperature at which ignition is triggered by a combustible gas directed onto the preheated section as a jet under pressure, while burn...
A graphic input system for digitizing the location of an object moving on a planar surface and utilizing two or more primary laser light beams, the output beam of each scanning the planar surface through interposed controllably pivotally mounted beam deflecting scan mirrors. A stylus is moved over the planar surface in...
A wavelength stabilized laser system includes a laser that produces a laser light having an amplitude and a wavelength that varies as a function of a temperature of the laser. A temperature control device controls the temperature of the laser. A beam splitter deflects a portion of the laser light. A first detector rece...
A display apparatus includes an emissive screen having luminescent pixels that are addressed solely by a laser addressing system. Each pixel includes a luminescent region located next to a photocathode. When struck by the laser beam, free electrons are created that are accelerated by an applied high voltage field from ...
During welding of higher stiffness steels there is significant tendency towards hardening in the area of the weld seam, which introduces a loss in ductility and thus strongly reduces the durability and quality of the construction components. For improving the seam quality an inductive pre or post warming of the ...
Provided are a hybrid laser diode for single mode operation, and a method for manufacturing the hybrid laser diode. The hybrid laser diode includes a silicon layer, an active pattern disposed on the silicon layer, and a bonding layer disposed between the silicon layer and the active pattern. Here, the bonding layer inc...
A technique is provided for using a laser based X-ray source for imaging systems such as computed tomography (CT) system. The laser based X-ray source may be provided as an X-ray bulb that emits X-rays when exposed to a laser beam. The X-ray bulb includes a bulb envelope and a bulb coating disposed on a portion of the ...
The invention relates to a method for producing picture element groups by means of laser rays in space and on a plane. The laser ray, functioning as a picture ray, is divided into a main ray and one or more secondary rays. The secondary rays are transformed into groups of individual picture elements by adapted devices....
A first alignment mark member is exposed at both of a mounting surface and a bonding surface, and thus can be seen from two directions by image sensors. While a semiconductor laser device is mounted on the mounting surface of a light source supporting substrate with reference to the first alignment mark member observed...
A system and method for controlling a cigarette tipping paper perforation process includes supplying the paper in the form of a flexible web from a supply spindle that is mounted for powered angular rotation to a take-up spindle that receives a portion of the flexible web, and the take-up spindle also being mounted for...
The invention relates to fabrication of VCSELs. It provides a method for fabricating a VCSEL that contains a micro/nano-structured mode selective lateral layer, where the micro/nano-structured layer is obtained by well controlled local etching. The invention enables control of the micro/nano-structured layer thickness ...
A light generating device such as a VCSEL includes a light generation layer, a top reflector, a bottom reflector, and a high thermal conductivity (HTC) layer between the light generation layer and the bottom reflector. The light generation layer is adapted to generate light having a first wavelength. Heat produced at t...
A surface-emitting laser array includes a plurality of surface-emitting laser elements. Each surface-emitting laser element includes a first reflection layer formed on a substrate, a resonator formed in contact with the first reflection layer and containing an active layer, and a second reflection layer formed over the...