18 results about "Laser beam transmission" patented technology

A laser system comprises a femtosecond laser, and a beam delivery system configured to deliver and scan a laser beam emanating from the femtosecond laser onto wood, based on a desired graphene design, wherein graphene is formed on the wood by the laser beam. A device capable of being fabricated by the laser system may include a temperature sensor which detects a temperature by measuring resistance of the graphene, a heater or a boiler which converts electrical energy to thermal energy, or electrical interconnects.

Apparatus is disclosed for generating and modulating the power of a laser beam to be transmitted in an optical communication fiber. The apparatus includes a laser source and an electro-absorption modulator located on a common insulating or semi-insulating substrate. The laser source generates the laser beam. A high- frequency electrical signal encodes data to be transmitted by the modulated laser beam. The modulator is differentially driven by the electrical signal, which is terminated on the common substrate to minimize cross talk with other data channels. Traveling-wave electrodes connecting segments of the modulator and a termination network maintain electrical signal integrity and minimize losses.

This invention discloses a cutting system and method, comprising: grooving equipment, grinding equipment, hidden dicing equipment, wafer casting equipment, and slitting equipment; the hidden dicing equipment includes a laser device for wafer dicing, the laser device comprising a laser, a tunable filter, a spatial light modulator, and a focusing structure arranged sequentially along the external optical path of the laser, the tunable filter being suitable for bandpass filtering of the laser beam, the spatial light modulator being suitable for shaping the laser beam, and the laser beam emitted from the self-focusing structure being suitable for generating multiple focal points distributed along the laser beam propagation direction. In this invention, the laser beam can be phase-modulated by the spatial light modulator to generate multiple focal points distributed along the laser beam propagation direction, improving processing efficiency; the tunable filter suppresses non-target wavelengths, providing a high-quality laser beam for the spatial light modulator, achieving laser beam shaping, and improving processing quality.

The invention relates to the technical field of laser communication microwave coding, in particular to an interstellar laser communication microwave coding method, which comprises the following steps: acquiring a microwave signal to be transmitted, converting the microwave signal into a digital signal, arranging the acquired digital signal according to a magic square construction rule, generating a magic square code, loading the magic square code onto a laser beam, and transmitting the magic square code to the laser beam. And transmitting the laser beam loaded with the microwave signal to a destination. A mathematical principle of a magic square is utilized, microwave signals to be transmitted are converted into digits, then the digits are arranged in the magic square according to a certain rule, the digits are loaded to light waves through laser beams, transmission of the microwave signals is achieved, the signals are effectively coded and transmitted, the anti-interference capacity of the signals is improved, the microwave signals are loaded to the laser beams, and the transmission efficiency is improved. According to the invention, high-speed and high-bandwidth transmission can be realized, different coding modes can be realized through different magic square construction methods, and the flexibility is very high.

Methods, systems, and apparatus, including medium-encoded computer program products, for a system including: at least one ink-based printer configured and arranged to provide ink to form a symbol on a surface of a material; at least one laser bleaching subsystem including a laser operable to produce a laser beam, and an optical assembly operable to convey the laser beam onto the surface of the material to generate an oxidized region on the surface of the material; and electronics communicatively coupled with the at least one ink-based printer and the at least one laser bleaching subsystem, the electronics being configured to coordinate control operations of the at least one ink-based printer and the at least one laser bleaching subsystem based on a nature of the surface of the material.

The embodiment relates to a laser drilling system and a method for selectively removing an insulating layer, and comprises: a workpiece including a metal layer and an insulating layer disposed on the metal layer; a stage on which the workpiece is placed; an optical delivery system disposed on the stage and configured to deliver laser light to the insulating layer; a laser beam generator connected to the optical delivery system and configured to output laser light; a blowing-suction device disposed between the workpiece and the optical delivery system; a monitoring-inspection device configured to inspect the surface shape of the workpiece; and a control unit configured to control the laser light generated by the laser beam generator and / or the optical delivery system based on the surface shape information, wherein the optical delivery system controls the laser light by means of a diffractive optical system.

The disclosed laser welding system is adapted for welding overlapping coated metal sheets, e.g. Zi- or Zi-alloy coated steel sheets. The disclosed welding system comprises a laser source producing OW or QCW laser beam, a laser beam delivery cable delivering the laser beam to a laser head of the welding system, wherein the laser head is equipped with a hollow pressure piece adapted to press against the surface of the first metal sheet and simultaneously to deliver the laser beam to the surface of the first metal sheet through the hollow pressure piece to create dimples on the surface of the first metal sheet. The hollow pressure piece of the laser head is also adapted to press against the surface of the second metal sheet positioned on the surface of the first metal sheet with the dimples during the step of seam welding the first and the second metal sheets. According to the invention, the power of the laser beam is reduced during the pre-processing dimpling step comparing to the laser beam power during the seam welding processing step.

The embodiment relates to a laser drilling system and a method for selectively removing an insulating layer on a metal layer. The system comprises a processing target, a stage, a laser beam generator, and an optical delivery system that delivers laser light to the insulating layer through a mask. A monitoring and inspection device acquires surface-profile information of the processing target, and a control device uses the information to control the laser light and / or the optical delivery system. A blowing-suction device may be disposed between the processing target and the optical delivery system to remove particulate contaminants or smear generated during etching. The mask includes, in a top view, a light transmission region and one or more phase shift regions that transmit the laser light and output depth-etching lasers having different intensities, and a light-shielding region that blocks the laser light.

The invention provides a method for establishing an amount of displacement between a first and a second object, in particular a displacement in the order of tens of nanometres, more in particular in the order of nanometres, comprising generating a phase-synchronised radio-frequency signal which is phase-synchronised using a clock signal having an accuracy of at least 10-10-th of a second, in particular at least 10-11-th of a second, more in particular at least 10-12-th of a second, providing an optical laser beam having a coherence length of less than 100 mm, in particular less than 10 mm, more in particular less than 1 mm, adding said phase-synchronised radio-frequency signal to said optical laser beam, transmitting said optical laser beam into an optical resonance cavity which has one end fixed to the first object and another end to the second object, extracting said optical laser beam from said optical resonance cavity, extracting a resonated radio-frequency signal from said resonated laser beam, determining a cavity length change from the resonated radio-frequency signal, and determining from said resonance cavity length change said amount of displacement.

The light source 100 includes one or more deflection mirrors 118 that deflect the laser beam 104 at various angles, and a diffraction optical system 126 that diffracts the deflected laser beam. The light source 100 also includes a multimode fiber that transmits the diffracted laser beam, and a plurality of lenses 130, 132 disposed between the diffraction optical system 126 and the multimode fiber, which provide the diffracted laser beam to the multimode fiber.

The invention provides a sealing integrity detection system and method for a sealed bottle, and the method comprises the steps: transmitting a first laser beam to a collimator through an optical fiber after a controller receives a trigger signal; the collimator corrects the first laser beam and emits an obtained second laser beam to the to-be-detected sealed bottle so as to transmit a laser signal to the signal receiving unit through the to-be-detected sealed bottle; the signal receiving unit outputs a first signal according to the laser signal and sends the first signal to the controller so as to output a second signal through the controller and send the second signal to the upper computer; the upper computer calculates the first gas content in the sealed bottle to be detected according to the second signal, compares the first gas content with the preset standard gas content, and determines the sealing integrity detection result of the sealed bottle to be detected according to the obtained comparison result. According to the system, the sealing integrity of the to-be-detected sealing bottle can be detected online without damaging the to-be-detected sealing bottle, and full detection of sealing bottle products produced by a production line can be realized.

The invention discloses a laser processing device and a laser processing method.The laser processing device comprises a light source assembly, an adjusting assembly and a field lens assembly, and the light source assembly is used for emitting a laser beam; the adjusting assembly comprises a first lens, a second lens and a driving part; a laser beam emitted by the light source assembly sequentially passes through the first lens and the second lens and then is emitted; the driving part is used for adjusting the relative position of the first lens and the second lens so as to control the emitting divergence angle of the laser beam; the field lens assembly is located on the light emitting side of the second lens and used for focusing the laser beams emitted by the second lens to the to-be-machined surface of the product. Wherein the light source assembly, the first lens, the second lens and the field lens assembly are sequentially and optically coupled to form a transmission light path for laser beam transmission. The method aims at increasing the adjusting speed so as to improve the efficiency of the machining process.

The utility model provides a lithium battery tab laser welding machine. The lithium battery tab laser welding machine comprises a workbench, a movable mechanical arm, a welding vibration lens, a laser welding main machine, an optical fiber, a cold air knife assembly and a cold air device. The workbench is used for bearing a lithium battery workpiece to be welded; the movable mechanical arm is movably mounted on the workbench; the welding vibration lens is mounted on the movable mechanical arm and is driven by the movable mechanical arm to move to a welding part of a lithium battery tab; the laser welding host is used for generating a laser beam, is connected to the welding vibration lens through an optical fiber and transmits the laser beam to the welding vibration lens; the welding vibration lens focuses the laser beams and welds the tabs; the cold air knife assembly is installed on one side of the welding vibration lens and used for blowing and cooling a welding area after welding is completed. And the cold air device is arranged in the laser welding host box body. According to the lithium battery tab laser welding machine, the cooling efficiency of a welded workpiece is improved, the heat affected area is reduced, and the welding quality and performance of a lithium battery are improved.

The invention relates to a laser defect detection device and method.The laser defect detection device comprises a machine table, a clamping module, a laser generation module and a plurality of detection modules, and the clamping module is arranged on the machine table and used for fixing a to-be-detected product; the laser generating module is arranged on the machine table and connected with a plurality of laser light paths, at least two laser light paths are arranged on the two opposite sides of the clamping module respectively, the laser light paths are provided with first reflectors along the tail ends of transmission paths of laser beams emitted by the laser generating module, and the first reflectors are movably arranged on the machine table; the multiple detection modules are arranged corresponding to the multiple laser light paths, at least two detection modules are arranged on the two opposite sides of the clamping module respectively, and the detection modules are movably arranged on the machine table. The laser defect detection device provided by the invention can be adapted to ultrasonic defect detection of the to-be-detected product with the complex special-shaped surface, and the plurality of laser light paths and the plurality of detection modules are mutually independent, so that multi-surface, double-surface, single-surface or dislocation detection of the to-be-detected product can be realized.

A laser light combining apparatus. The laser light combining apparatus comprises a light splitting element and a wavelength conversion element. The light splitting element is used for reflecting a portion of a laser incident at the side of the light splitting element facing away from the wavelength conversion element, so as to form a first wavelength beam, and used for transmitting the unreflected portion of the laser to the wavelength conversion element the wavelength conversion element is used for performing wavelength conversion on the unreflected portion of the laser to form a second wavelength beam, and reflecting the second wavelength beam to the light splitting element, so that the second wavelength beam and the first wavelength beam form combined light, where the divergence angle of the first wavelength beam and the divergence angle of the second wavelength beam are both greater than the divergence angle of the laser.

A system that measures thickness of a glass includes a laser that transmits a laser beam through the glass; a sensor that senses an interference pattern of the laser beam through the glass; and a computer that processes sensor data corresponding to the interference pattern received from the sensor to determine the thickness of the glass.

Apparatus is disclosed for generating and modulating the power of a laser beam to be transmitted in an optical communication fiber. The apparatus includes a laser source and an electro-absorption modulator located on a common insulating or semi-insulating substrate. The laser source generates the laser beam. A high- frequency electrical signal encodes data to be transmitted by the modulated laser beam. The modulator is differentially driven by the electrical signal, which is terminated on the common substrate to minimize cross talk with other data channels. Traveling-wave electrodes connecting segments of the modulator and a termination network maintain electrical signal integrity and minimize losses.

The application discloses a laser shaping device based on a microstructure optical fiber output end face, relates to the technical field of laser shaping, and discloses the laser shaping device based on the microstructure optical fiber output end face, which comprises an optical fiber, the optical fiber has an input end face, a transmission section and an output end face in sequence, the input end face is used for being fixedly connected with a laser generator and receiving a laser beam emitted by the laser generator, the transmission section can transmit the laser beam on the input end face to the output end face, the output end face is provided with a plurality of microstructure units, and all the microstructure units can cooperatively control the light intensity distribution and / or the spot shape of the laser beam; the laser shaping device based on the microstructure optical fiber output end face disclosed by the application has the advantages of simple structure, high integration degree and high efficiency and low loss.