15 results about "High intensity lasers" patented technology

A counter high-energy laser system directs high-intensity laser radiation back to a threat laser in the form of an ultra-short optical pulse (USP). The retro-directed USP induces permanent internal optical damage in the threat laser, thus disabling the threat by exploiting the very high optical gain at the source of an incoming laser thereby causing an injected pulse to grow exponentially in energy and peak power within the threat laser optical train until it reaches a damaging threshold. The existing optical energy from the threat laser system and stored in the laser beam from threat system is exploited thereby enabling the size, weight, and power of the counter laser system to be significantly reduced. The wavelength of the counter pulse is automatically matched to the threat.

1. The name of the design product: table type semiconductor laser physiotherapy instrument. 2. The use of the design product: through high intensity laser irradiation of blood to trigger a series of biochemical reactions in the human body, through the two aspects of blood and static blood to improve and restore the physiological function of blood, and to relieve pain after operation. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention discloses a method for reducing a laser processing threshold by adopting cerium-doped glass. The method comprises the following steps: 1) selecting quartz glass or borosilicate glass as a glass substrate; 2) preparing the glass substrate selected in the step 1), specifically, 2.1) preparing a precursor liquid; (2.2) entering a mold; 2.3) drying treatment; 2.4) heat treatment and sintering; and 3) laser processing. The Ce < 3 + > ions are doped in the glass substrate, and the light absorption characteristic of the Ce < 3 + > ions in a narrow band gap is utilized, so that the problem of low laser energy absorption efficiency caused by the wide band gap characteristic of the traditional glass substrate is effectively improved, and the energy absorption efficiency of the glass substrate to laser is remarkably improved, which means that the energy absorption efficiency of the glass substrate to laser is greatly improved under the same processing effect. The required laser energy can be greatly reduced, the dependence of a laser processing system on a high-power laser is reduced, thermal damage is greatly reduced, the problems of fusion, microcracks, thermal stress and the like caused by traditional high-intensity laser are avoided, and excessive loss of energy is also avoided.

The utility model relates to a reactor system, a laser generation system and a fusion reactor system for space application. The reactor system comprises a reactor, at least one satellite system, an optical cavity, an optical path modifying device, at least one pair of reflecting mirror devices, a timing device and a space driving device. The present disclosure provides a fusion energy system configured with a high intensity pulsed laser system in a compact and spatially efficient system; the high-intensity pulse laser system provides enough energy to ignite and maintain fusion energy configured in space application; the present disclosure provides the advantage of using this high intensity laser in space to produce fusion energy through efficient size, weight and cost.

To provide a cutting method capable of accurately cutting at a high speed with a minimum thermal effect by using a laser beam.SOLUTION: The method for dividing the raw sheet 1 uses a hybrid double-core laser L. A raw material 1 in which an active material layer 2 is coated on at least one surface of a long metal foil 4 is conveyed in one direction. A double core laser L constituted of a high intensity laser Lf at the center part and a preheating laser Ly surrounding the periphery of the high intensity laser Lf and preheating the periphery of the irradiation point P with lower intensity than that of the high intensity laser Lf is irradiated in a pulse state. A perforated hole 1h is formed in a raw sheet 1 in the longitudinal direction. On the downstream side separated from the irradiating point P, the raw sheet 1 is torn up and down along the row of the hole 1h with the perforated hole 1h as a starting point.SELECTED DRAWING: Figure 1

The invention relates to the technical field of welding wires, in particular to a 785MPa-grade high-toughness laser-arc hybrid welding solid welding wire and a design method thereof.The 785MPa-grade high-toughness laser-arc hybrid welding solid welding wire is characterized in that 3.5%-5.5% of Ni and 0.5%-0.8% of Mo are added into welding wire alloy, and a large number of autocatalytic nucleation is induced to be generated, so that deposited metal forms an interlaced lath bainite structure; the contents of key alloy elements such as C, Mn, Ni and Mo are cooperatively regulated and controlled, so that the structure embrittlement tendency caused by steep rising and falling heat circulation in the laser-electric arc hybrid welding process is effectively controlled, a fine grain structure mainly comprising interlaced lath bainite is obtained, structure refinement is effectively achieved in deposited metal, and the welding quality is improved. Therefore, the alloy still has excellent impact toughness (KV2 reaches 91-100 J) in a low-temperature environment of-50 DEG C, the technical problem that high-strength laser-arc hybrid welding deposited metal is insufficient in toughness under extreme working conditions is solved, the safety of a welding structure is improved, the service life of the welding structure is prolonged, and upgrading of a maritime work equipment construction process is promoted.

The utility model discloses a particle detection device which comprises a detection cavity, an air inlet nozzle and an air outlet nozzle which are arranged on the detection cavity, a light source assembly capable of providing light focused at the central position of the detection cavity, a first reflecting mirror, a second reflecting mirror, a light collecting reflecting mirror and a light receiving lens, a gas path formed between the gas inlet nozzle and the gas outlet nozzle passes through the central position of the detection cavity; the particle detection device disclosed by the utility model adopts the reflecting mirror to reflect laser rays in the cavity for multiple times, and a high-intensity laser area is formed at the intersection of a light path and a gas path, so that the detection precision and sensitivity are improved, and the design can greatly reduce the power of laser equipment, reduce the volume of a light source, reduce the power consumption of the light source and reduce the overall volume of a sensor; the overall performance of the sensor is improved, miniaturization of equipment is facilitated, and high-precision detection can be carried out on small particles.

The invention belongs to the technical field of new energy lithium ion battery manufacturing, particularly relates to a surface pretreatment mode for battery welding, and aims to solve the problem that the existing current large cylindrical battery has many welding procedures including negative electrode collector plate welding, positive electrode collector plate welding, penetration welding, sealing nail welding and cover plate circumference welding. The number of welding procedures is large, the process yield is low, efficiency is low, and cost is high. Laser welding is high in base metal welding requirement and free of foreign matter and impurities. The method comprises the following steps that a welding system is composed of ultrafast pulse laser, a beam shaping device and a high-speed scanning galvanometer; the method comprises the steps that S1, a beam of ultrafast pulse laser is provided, the pulse width is smaller than 10 ns, and the repetition pulse frequency is larger than 200 KHZ; and S2, the ultrafast pulse laser is incident to a beam shaping device, a large number of organic foreign matter generated by electrolyte crystallization can be removed on the basis of high-intensity laser shock, and hole explosion, splashing and other defects occurring in the laser welding process are reduced.

The present invention relates to a highly transparent retro-reflective sheet for achieving broad-spectrum light reflection in applications such as cryogenic storage, high-intensity laser systems, and directed energy weapon (DEW) shielding. The highly transparent retro-reflective sheet comprises a sheet body, an optical structure surface and a reflecting surface. The highly transparent retro-reflective sheet is capable of broad-spectrum light reflection with minimal absorption for maximum efficiency, and is able to withstand high-powered laser beams without damage. The highly transparent retro-reflective sheet is disposed on objects to reflect away light or radiation directed towards the objects, thereby enabling the highly transparent retro-reflective sheet to be applicable for diverse applications such as space-based cryogen storage, superior reflective layers for vacuum insulation, high-intensity laser beam reflectors for beam-propelled space travel, and optical and infrared shielding from directed energy weapons (DEW).

Method for manufacturing a valuable or secure product (100), comprising the steps: - Providing a core layer (102) of the value or security product (100), - Applying at least one laser-compatible foil layer (106) to the core layer (102) or to one or more polymer layers (104) applied to the core layer (102), - Incorporating person-specific and / or product-specific non-tactilely detectable information (108) into the laser-compatible foil layer (106) using a low-intensity laser beam, and - Forming person-specific and / or product-specific information in the form of at least one tactilely detectable Braille character (110) with a high-intensity laser beam which is higher than the low intensity, wherein a cover layer which is only partially opaque is applied to the laser-capable foil layer (106), and wherein the cover layer is opaque at least in one of the places where a blackening has been introduced into the underlying laser-capable foil layer (106) by the laser beam.

The utility model discloses a high intensity laser machine lathe bed, including lathe bed, separating cabin, chip collecting cabin, the separating cabin is provided in the lathe bed, the one side of separating cabin is equipped with the control motor, the output end of the control motor is firmly connected with the screw rod, the surface of the screw rod is in threaded connection with the ball sliding sleeve, one side of the ball sliding sleeve is connected with the sliding block, the other side of the ball sliding sleeve is connected with the chip collecting cabin, and the chip collecting cabin is equipped with the chip collecting cabin. A sliding block is arranged in the separation bin, a brush is connected to the bottom of the sliding block, conveying openings are formed in the two sides of the interior of the separation bin, the conveying openings are communicated and connected with a scrap collecting bin, a hydraulic cylinder is installed on the scrap collecting bin, and the output end of the hydraulic cylinder is fixedly connected with a pressing plate. Large-particle chippings enter the chipping collecting bin, the chipping collecting practicability is improved, the hydraulic cylinder is started to drive the pressing plate to press and pretreat the large-particle chippings, the collecting space in the chipping collecting bin is enlarged, and follow-up treatment of the large-particle chippings is facilitated.

The utility model relates to the field of feed quality detection, in particular to an automatic measuring device for powder content and pulverization rate of pellet feed, which adopts the technical scheme that the automatic measuring device for the powder content and the pulverization rate of the pellet feed comprises a storage tower, a tower bottom support frame, a base, a numerical control computer, a vibration motor, a resistance sensor, a filter screen plate and a laser particle size analyzer, the lower end of the upper detection cylinder is provided with a lower detection cylinder in a threaded manner, and the outer wall of the upper detection cylinder is fixedly connected with vibrating motors which are in bilateral symmetry. High-intensity laser emitted by the laser particle size analyzer can detect the light scattering characteristics of the pellet feed and feed dust, the proportion of powder to particles is analyzed according to the light scattering intensity, and the filtered pellet feed is weighed in cooperation with the micro electronic scale, so that the powder content and pulverization rate of the pellet feed are accurately detected.

The utility model relates to the technical field of accurate positioning of lifting hooks, in particular to an accurate positioning device of a tower crane lifting hook, which comprises a tower crane structure, the tower crane structure comprises a main body frame, a jacking sleeve section, a tower cap, a rear arm, a front arm, a lifting lifting hook, a detection positioning structure and a control room, and the detection positioning structure comprises a sliding toothed rail and a fixed sliding seat arranged below the sliding toothed rail. The driving motors are symmetrically installed on the two sides of the fixed sliding base, the sliding gears are arranged at the output ends of the driving motors and clamped and embedded in the sliding toothed rail in a meshed mode, the cameras are symmetrically arranged on the lower surface of the fixed sliding base, the high-intensity laser spotlight is arranged between the two cameras, and a receiving block is arranged on the lifting hook. According to the utility model, the detection positioning structure and the receiving block are matched with each other, so that a target site can be accurately positioned in advance when goods are hoisted, and cooperation command of multiple persons is not needed, so that the transportation efficiency is improved, the labor cost is reduced, and convenience can be better provided for operators.

The laser produced plasma light source comprises a vacuum chamber (1), a rotating target assembly (2) which delivers a target (3) to an interaction zone (4) together with a focused laser beam (5). The target is a layer of molten metal on the surface of an annular groove in the target assembly. An output beam of short wavelength radiation (7) leaves the interaction zone via debris mitigation means to a light collector (8). The linear velocity of the target is preferably greater than 100 m / s, and the vector of the linear velocity of the target in the interaction zone is directed to one side of a plane (18) passing through the interaction zone and the axis of rotation (6), and the focused laser beam and the output beam are positioned on the other side of said plane.

The application discloses a device for realizing in-situ measurement of time-domain waveforms of ultrahigh-intensity laser pulses, which comprises a component to be measured, wherein the component to be measured comprises a femtosecond laser source, a beam splitter arranged on one side of the femtosecond laser source, a mirror component arranged on one side of the beam splitter, a first focusing lens arranged on one side of the mirror component, a vacuum component arranged on one side of the first focusing lens, a dual-color mirror arranged on one side of the vacuum component, a narrow-band filter arranged on one side of the dual-color mirror, a 10cm focusing lens arranged on one side of the narrow-band filter and a spectrometer; and a detection component, wherein the detection component comprises a mirror, a second focusing lens arranged on one side of the mirror and a time-delay device mounted on an electrically-controlled displacement table. According to the application, the limitation of traditional equipment in terms of damage threshold can be broken, only a common spectrometer is needed to record optical frequency domain information, the method is simple, the cost is low and the applicability is wide.