Multi-beam laser radiation source and device for handling materials with its use

FIELD: physics.

SUBSTANCE: multiple-beam source consists of a generator and a multi-channel amplifier. Radiation generator comes to the input of the amplifier via the Extender, and then hardened individual fragments of a wide beam of the active element, consisting of laser plates located successively in several parallel ranges. Each plate contains elongated along the longitudinal axis of the plate at the heart of the active material and surrounding it with the side of a dormant shell. The space between all the plates is filled with heat sink elements. The pump radiation is fed through the free narrow faces of the plates. Treated material is placed on the base surface, conventionally divided into sectors according to the number of laser beams. Scanning heads installed over one of the vertices of each sector at an altitude determined by the formula h=d/tgα, where d is the diagonal length of the sector, α - maximum scan angle. To compensate alignment errors of laser heads used rigid frame with a square grid sensors.

EFFECT: invention allows the simultaneous use of a large number of powerful laser beams to speed the processing of large volume products.

5 cl, 14 dwg

 



 

Same patents:

FIELD: physics.

SUBSTANCE: method of reducing laser generation existence domain involves bringing the required value of the laser generation existence domain is brought into conformity with the difference between active medium gain, the controlled ratio between pumping intensity and depopulation of the upper or lower energy level, and main resonator losses which are varied selectively on the frequency range by the action of additional external or internal optical resonators for the operating transition connected to the main resonator. The action of the additional resonators occurs only through an auxiliary optical transition, having a common energy level with the operating transition, wherein radiation at the operating transition from external resonators is essentially not returned.

EFFECT: enabling reduction of the laser generation existence domain without deterioration of generation at the main laser transition.

2 dwg

FIELD: physics.

SUBSTANCE: pulsed laser includes lasers I and II, as well as a pumping unit for laser I. Laser I consists of a resonator 1, having a laser element 3; laser II consists of a resonator 2, having a laser element 4. Radiation frequency of laser I is higher than that of laser II, and laser I pumps laser II. Laser I and laser II are connected to each other such that radiation generated by laser II passes through laser element 3; laser element 3 amplifies radiation of laser II passing through; and radiation of laser II modulates amplification in laser element 3 at the radiation frequency of laser I.

EFFECT: possibility of obtaining a pulsed generation mode, and shorter duration of the pulse generated by the apparatus.

7 cl, 6 dwg

Laser system // 2235395
The invention relates to the field of laser equipment, namely, slot discharge lasers, and can be used to create powerful technological lasers

The invention relates to the field of quantum electronics and can be used to create sources of high-power single-frequency radiation with a wide range of adjustment of the oscillation frequency

Multi-emitter // 2035132
The invention relates to laser technology, namely the multi-channel laser emitters, comprising placed on the frame of single emitters with their output optical elements and devices information and transform their rays

FIELD: electricity.

SUBSTANCE: solid-state pulse laser includes an active element, a lighting installation including a pumping lamp and a reflector, as well as a resonator including a prismatic cover plate and a flat mirror, which are installed on opposite ends of an active element so that the rib of the prismatic cover plate and the edge of the flat mirror are perpendicular to an optic axis of the active element arranged near the pumping lamp in the reflector. The laser includes a flange fixed on the reflector on the opposite side from the prismatic cover plate and a quality switch arranged inside the reflector. The flat mirror is semi-transparent and rigidly fixed on the flange before the output end face of the active element, and the prismatic cover plate is installed after the opposite end face of the active element with a possibility of rotation about the axis perpendicular to its rib and the optical axis of the active element and parallel to a hypothenuse edge of the prismatic cover plate.

EFFECT: providing possible simplification of the design and reducing labour costs for laser manufacture.

2 cl, 1 dwg

FIELD: physics.

SUBSTANCE: inside the cavity of a vertically emitting laser with Bragg mirrors and intracavity metal contacts, between a Bragg reflector and the active region there are metal layers which are simultaneously contacts and elements of the cavity which generates the characteristic mode of the electromagnetic field, wherein the thickness of the layers of the Bragg reflector adjacent to the metal layer differs from the other layers of the Bragg reflector, which provides such a spatial structure of the characteristic mode of the electromagnetic field used for laser generation that electrical field nodes coincide with the metal layers on position, which significantly reduces light absorption by the metal layers, while providing maximum overlapping of the electric field of the characteristic mode of the laser and the active region.

EFFECT: low electrical resistance of the structure, ensuring uniform pumping electrical current and inhibiting light absorption by metal layers.

2 dwg

FIELD: electricity.

SUBSTANCE: UHF quanta generation method consists in formation of an electron beam by means of an electronic gun with simultaneous modulation by its anode field of the electronic gun at the working frequency of the power supply system, the subsequent compression by electric field, for example, of a double electric layer for increase of beam energy and charge density and a further stop of electrons by means of the barrier consisting of dielectric and electroconductive layers during which electrons give up energy as electromagnetic quanta with the parameters depending on the value of the correcting voltage of the working frequency field which influence the compressed electron beam until stop of electrons. Then electrons are sent to the power supply system for obtaining of electric power of working frequency.

EFFECT: increase of energy of interaction of electrons in a beam, power of UHF generation and efficiency of the power supply system.

1 dwg

FIELD: physics, optics.

SUBSTANCE: invention relates to laser engineering. A pulsed two-mode solid-stage laser comprises a rotary dihedral rectangular prism for breaking the axis of a resonator, an active element having stimulated Raman scattering (SRS) conversion, a wedge compensator, second dihedral rectangular prism which constitutes, with an output mirror, a single end element of the resonator and a pumping lamp. The laser further includes plane-parallel plates capable of entering/exiting the beam area between the active element and the second dihedral prism at an angle of 90 degrees to each other and a passive laser shutter (PLS1) between the first rectangular prism and the active element. The input surfaces of the plane-parallel plates and the PLS1 are coated with a beam-splitting coating having minimal radiation reflection for operating wavelengths and maximum radiation reflection at non-operating wavelengths. The passive laser shutter PLS1 is inclined relative to the end of the active element at an angle α>d/L, where L is the distance from the active element to the PLS1, d is the diameter of the active element. The plane-parallel plates and the first PLS1 can exit from the resonator with simultaneous entry of a second passive laser shutter (PLS2) into the resonator.

EFFECT: enabling operation of the laser in both a wavelength range safe for the eyes and at basic transition radiation wavelength.

2 cl, 1 dwg

FIELD: physics, optics.

SUBSTANCE: invention relates to laser technologies. The method of obtaining of optical discharge in gas consists in optical breakdown of gas with formation of absorbing plasma domain and its maintaining in a laser beam during its action. Meanwhile gas breakdown with formation of plasma domain is performed by focusing of radiation of short-pulse laser, and the maintaining of plasma domain is performed in the resonator of continuous laser or laser with long duration of impulse due to multiple passing of radiation of continuous laser or laser with long duration of impulse through the optical discharge.

EFFECT: enhanced efficiency of laser energy utilisation.

6 cl, 2 dwg

FIELD: physics, optics.

SUBSTANCE: invention relates to laser physics and generation of high-power pulses of a CO2 laser. The invention enables to generate short, high-energy pulses, having minimal angular divergence, which enables to obtain high-intensity CO2 laser beams, particularly intended for producing a laser-plasma ion source. The device consists of a single-mode driving generator operating on a CO2 10 mcm band line P(20) , an optical matching system and a three-path CO2-amplifier formed by the wide-aperture active medium of a CO2 laser and a resonant-absorption cell SF6+N2 (air) at atmospheric pressure, which are arranged in series inside or on the axis of a confocal telescope, which includes a large concave or a small convex mirror. The invention is based on repeated passage a pulse of the driving generator successively through the resonant-amplification and resonant-absorption medium, which increases the rising slope of the initial pulse and leads to compression of the pulse on duration during nonlinear amplification, thereby effectively increasing the power thereof.

EFFECT: three-time passage of resonant media of the absorber and amplifier in an axially symmetric shape enables to repeatedly use the described method and also enables to use spatial effects of increasing the light field in corresponding points of the media through interference, which improves efficiency of pulse compression in the amplifier.

3 cl, 1 dwg

FIELD: electricity.

SUBSTANCE: phocon semiconductor electric-discharge laser (PSEDL) comprises high-voltage nanopulser, transmitting line, chamber with electrodes and laser target, the chamber consists of two sections divided by partition of dielectric material with opening in the centre and filled with gas (air, nitrogen, helium, etc.), which pressure is set within limits of 0.1-5 Torr; laser target consists of conical fibre guide (focon) and plane-parallel semiconductor plate fixed at the cone peak.

EFFECT: potential improvement of directional property of laser radiation, improved image of the near-field.

6 cl, 2 dwg

FIELD: electricity.

SUBSTANCE: SHF quantum generator based on electron beam generated by electron gun and electromagnetic pickup comprises arc plasmotron (1); two electron guns (2), which generate and modulate electron beams (3) by working frequency ωp (3); two operating cavities (5), electrodes (4) of correction voltage; electron barriers (6), SHF quantum channels (7), where electromagnetic pickups (8) for SHF quanta are placed in order to receive analogue data on generated SHF quanta, receiving and transmitting equipment (9) of SHF traffic, system for automatic regulation of parameters for generated SHF quanta that includes: analogue-to-digital converter (10), comparator (11), code programmer (12) for SHF quanta, digital-to-analogue converter (13); two resonance circuits (14), power converter transformer (16), which midpoint (15) of the primary circuit is connected to cathode of the arc plasmotron (1).

EFFECT: improved quality of data transmitted through SHF traffic due to improved signal-to-noise ratio, increased efficiency factor.

1 dwg

FIELD: physics, optics.

SUBSTANCE: invention relates to laser engineering and techniques of forming charged particle beams and generating electromagnetic radiation flux. A source optical pulse of a high-power femtosecond laser radiation source is focused in a vacuum chamber by a focusing system onto a gaseous converting target, for example in the form of a gas jet. The required laser pulse intensity for efficient generation of an electron stream is achieved by varying parameters of the high-power femtosecond laser radiation source and the focusing system. The electron stream from the converting target passes through a condensing selector, wherein the stream of electrons with energy sufficient to excite nuclear states is selected and focused on a target containing nuclei of the excited isotope. Further, radiation generated during decay of the excited nuclear states is transmitted to a detector.

EFFECT: invention can be used particularly in designing and producing sources of pulsed (coherent) electromagnetic ionising radiation in the gamma- and X-ray ranges.

5 cl

FIELD: electricity.

SUBSTANCE: device for shaping a volumetric self-sustained discharge includes a tight housing, in which two extended shaped electrodes galvanically connected to a pulse power source are installed along the axis. One of the electrodes is fixed on a dielectric base with a developed surface, and the other one is fixed on reverse current leads so that a discharge gap is formed between the electrodes. Both electrodes are of a replaceable type and have a shaped surface along the perimeter, which is made on the basis of a Stepperch profile; with that, the electrode fixed on the reverse current leads has a possibility of being moved relative to the other electrode to adjust the discharge gap. The reverse current leads are made in the form of bent rods and located so that distance from the electrode fixed on the dielectric base to the reverse current leads along the surface of the dielectric base meets the ratio of Lsurf≥2.5D, where D - height of the discharge gap.

EFFECT: providing a possibility of shaping a homogeneous and stable volumetric self-sustained discharge during a pump pulse period.

6 cl, 2 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to production of steel sheet articles from different-depth steel sheet or strips. Billets are welded together along the butt to get the weld (7) composed by edges of steel sheet or strip workpiece. To rule out loss of quenched structure produced by heating to austenitising temperature, at least one edge of sheet or strip (8, 9) is coated before welding with thick fluid or solid powder or aerosol-like matter including at least one component increasing the strength of the weld (10).

EFFECT: higher weld strength.

28 cl, 2 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to machine for production of polar plates by laser cutting. This machine comprises bed, laser cutting assembly, cutting manipulator to drive laser cutting assembly, control system and at least one strip feeder. Strip feeder comprises manipulator for gripping, means for strip feeding to preset length and strip release means. Cutting and gripping manipulators are arranged at the bed. Means for strip feeding to preset length is arranged between gripping manipulator and strip release means. Control system is connected with cutting manipulator, gripping manipulator and means for strip feeding to preset length.

EFFECT: production of plates for lithium-ion storage batteries and super capacitors by laser technology, higher quality of plates.

10 cl, 5 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to laser plasma welding of metals and device to this end. Invention can be used for welding of such materials as steel and aluminium by combined laser plasma effects. Welding parts are preheated in the weld area by plasma flux. Laser beam is directed to but of welding parts. Produced weld is additionally heated by plasma flux. Plasma flux is shaped to circle while laser radiation is fed via geometrical centre of circular plasma flux to said butt. Device for laser plasma butt welding of metals comprises plasma flux and laser radiation sources. Plasma flux source comprises outer and inner ring electrodes to produce plasma flux located in one plane with their geometrical centres aligned at one point. Laser radiation source can feed laser radiation via said geometrical centre.

EFFECT: intensified welding, lower rate of weld cooling, higher strength of the weld.

2 cl, 1 dwg

FIELD: process engineering.

SUBSTANCE: invention relates for surface processing to get glossy and dull sections. In compliance with this process, surface pre-coated with first copper ply and second ply including bottom nickel ply and top chromium ply is subjected to selective removal of chromium ply on sections to be frosted. Selective removal is performed by laser displaced above the surface. Note here that laser exposure and power are adjusted to get various texture. Then, ply of noncorrosive metal containing zirconium and chromium is evaporated from vapour phase on said surface.

EFFECT: production of glossy and frosted surface sections.

5 cl

FIELD: physics, optics.

SUBSTANCE: invention relates to a laser beam focusing head for laser cutting, a method and an apparatus for laser cutting of a metal component. The focusing head comprises a collimating lens (13) and a focusing lens (14). The collimating lens (13) and the focusing lens (14) are made of ZnS and have peripheral thickness of at least 5 mm. A deflecting mirror (15) operating at an inclination angle (α) from 40° to 50° is placed between the collimating lens (13) and the focusing lens (14) on the path of the laser beam. The laser cutting apparatus comprises a solid-state laser device (SL) emitting a laser beam with wavelength of 1.06 mcm to 1.10 mcm and power of 0.1 kW to 25 kW, said focusing head and a conveying fibre (CF) connecting the solid-state laser device (SL) and the focusing head.

EFFECT: invention provides a stable focusing position of a laser beam during cutting.

13 cl, 5 dwg, 1 tbl

FIELD: process engineering.

SUBSTANCE: invention relates to welding of at least two components 102, 104 of super alloys. In compliance with this process, mail weld 110 if made with the use of the first filler metal arranged between said components 102, 104 and weld surface 112 with the use of second filler metal made over the main weld. Spacer 506 is fitted between said components provided with optional flute 105 made along the surface 114 of weld 102, 104. Filler wire 504 is fed over preset surface 114 or inside said optional flute 105. Two lasers 700, 702 or laser 600 with connected beam splitter 604 produce first and second laser beams 508, 510. Said beams are directed at focus points 5122, 514 spaced apart through preset spacing (509), for example, 0.05-1.5 cm. First laser beam 508 is used for making of the main weld 110 with the help of fist filler metal between components 102, 104. Second laser beam 510 is used for making of the surface weld 112 with the use of second filler metal on the surface of the main weld 110.

EFFECT: perfected method.

9 cl, 8 dwg

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