232 results about "Laser optics" patented technology

The invention relates to the technical field of optical processing, and discloses an imaging depth adjustable laser optical processing system, which comprises a laser emission unit, an optical conduction unit, a spectral domain optical coherence tomography imaging unit, a laser galvanometer scanning unit, an indication light imaging unit, an image processing display unit and a control unit, according to the spectral domain optical coherence tomography imaging system, time scanning of high output wavelength is realized by utilizing a wavelength scanning mode that the scanning telescopic rotating module drives the spectral domain optical coherence tomography imaging system, and position information or image information of a sample from the surface to the interior is provided in real time in combination with an image processing technology; the three-dimensional galvanometer scanning unit scans the position of a sample in real time and records the position and orientation information of a scanning point at the same time, real-time image information and different depths, widths and axial positions of the sample are scanned at the same time, the focusing depth and wavelength of an imaging laser beam and the focusing position and energy of the scanning laser beam are fed back and adjusted, and the laser beam is positioned to the sample for machining.

An optical device includes: a first optical system; and a second optical system. The first optical system includes a first light splitting device configured to split measurement light emitted from a first light source into a first measurement light and a second measurement light and then mix the split measurement light, a first mirror configured to add a first modulation signal by being moved in an entering direction of the first measurement light and reflecting the first measurement light, a second mirror configured to reflect the second measurement light, and a first light receiving device configured to receive the measurement light including a sample-derived signal and the first modulation signal and output a first light receiving signal. The second optical system includes a second light source configured to emit laser light, an optical modulator configured to add a second modulation signal to the laser light, and a second light receiving device configured to receive the laser light including a displacement signal generated by reflection on the first mirror and the second modulation signal and output a second light receiving signal.

The invention relates to the field of optical elements, in particular to a coating method of a high-precision intense laser optical lens. The film coating method comprises the following steps: step 1, substrate pretreatment; step 2, surface activation; 3, a preparation stage; step 4, coating treatment; and step 5, post-processing. According to the method disclosed by the invention, the problems of adhesive force, uniformity, damage resistance and the like of a traditional method in strong laser lens coating are solved through fusion of double-plasma cooperation and a self-adaptive gradient composite coating technology. The method provided by the invention can be used for customized production for different laser scenes, and is suitable for high-end fields such as high-energy laser industry, quantum calculation, infrared imaging and the like.

The invention discloses a miniature camera and laser common-caliber optical system and a use method, and relates to the field of laser optical instruments. The problem that an existing multi-band common-caliber optical system cannot achieve integration, multi-functionalization and miniaturization at the same time is solved. The miniature camera and laser common-aperture optical system comprises a zoom optical lens group, a beam expanding telescope group, an electromagnetic galvanometer, a spectroscope, a fast reflecting mirror and a laser light source. The laser converging zoom optical lens group and the fine tracking imaging branch are respectively connected with the zoom cam lens cone and the fine tracking lens cone, the beam expanding telescope group is connected with the antenna frame, and the electromagnetic galvanometer, the spectroscope and the reflector are all connected with respective bases. The optical axis collinear coupling design is adopted among the components, it is ensured that a laser path and an image path are completely overlapped, and high-precision image guide striking control is achieved. The small mobile platform is suitable for industrial precision machining and rapid identification, high-precision tracking and laser precise striking of short-range dynamic targets.

A laser annealing system and a laser annealing method are provided. A laser annealing system for annealing a thin film by irradiating the thin film on a substrate with a pulsed laser light, the laser annealing system comprising: a laser device for outputting the pulsed laser light; an optical system that irradiates the thin film with pulse laser light; and a processor that performs control to irradiate the same portion of the thin film with the pulsed laser light by performing burst irradiation in which a burst period in which the pulsed laser light is continuously irradiated and a suppression period in which the irradiation of the pulsed laser light is suppressed are repeated.

The invention relates to a primary laser optic (1) for defining a beam path (S) of a laser beam, comprising a primary interface (2) for connecting the primary laser optic (1) to a motion unit (3), wherein the beam path (S) extends from the motion unit (3) into the primary laser optic (1); a movable deflecting mirror (4) for selectively assuming a deflection position (P1), in which the deflecting mirror (4) deflects the beam path (S), and a passing position (P2), in which the deflecting mirror (4) is outside the beam path (S); a secondary interface (5) for connecting a secondary laser optic (6) to the primary laser optic (1); and a primary focusing optic (7) with a primary lens (8) for focusing the laser beam onto a workpiece (W). The invention further relates to a method for laser processing of a workpiece with a laser optic unit (100).

To collimate an atomic beam by using laser beams, without requiring high-precision parallel arrangement of the laser beams.SOLUTION: An atomic beam 110 is subjected to quantum collimation. The atomic beam 110 is irradiated with a pumped laser beam 701a and a filtering laser beam 701b in this order. The pumped laser beam 701a has a wavelength corresponding to transition between a ground state and an excited state of an atom contained in the atomic beam 110. The atom is transitioned from the ground state to the excited state, and further, the atom is relaxed from the excited state to a metastable state, according to irradiation of the pumped laser beam 701a. The filtering laser beam 701b has a wavelength corresponding to transition between the ground state and the metastable state. According to irradiation of the filtering laser beam 701b, an atom of the metastable state having a velocity component that is the same as a prescribed velocity component Δv or smaller than Δv, in a travel direction of the filtering laser beam 701b, is transitioned to the ground state.SELECTED DRAWING: Figure 2

The invention relates to a multi-beam space angle positioning device and a using method, and belongs to the technical field of laser optics, the multi-beam space angle positioning device comprises a main positioning plate and a secondary positioning plate which are coaxially arranged, a plurality of main positioning holes are formed in the main positioning plate, and the number of the main positioning holes is equal to that of laser beams; a plurality of main positioning holes are formed in the main positioning plate, the arrangement shape formed by the plurality of main positioning holes is the same as the arrangement shape of the plurality of laser beams focused to the same target spot, a plurality of secondary positioning holes are formed in the secondary positioning plate, and the number of the secondary positioning holes and the arrangement shape formed by the plurality of secondary positioning holes are the same as those of the main positioning holes; according to the multi-beam laser positioning device, the positioning problem in the application of the multi-beam laser technology in the prior art can be solved, the multi-beam positioning requirements of different space angles are met, and the multi-beam laser positioning device is simple in structure and suitable for table-board type or small-sized optical machine instruments.

The invention provides a Faraday sheet performance measurement and polarization imaging system and method, and relates to the technical field of optical testing. The system comprises a light source system, an optical research platform, a polarizer, a first analyzer, a microscopic imaging system and an image acquisition system, the light source system is used for emitting laser; the optical research platform is used for arranging a to-be-measured Faraday sheet and generating a magnetic field; the microscopic imaging system comprises an eyepiece and an objective lens, and the image acquisition system comprises an image acquisition mechanism; in the first propagation direction of the laser, the light source system, the polarizer, the Faraday piece to be measured, the objective lens, the first polarization analyzer, the eyepiece and the image acquisition mechanism are sequentially arranged. According to the Faraday piece performance measurement and polarized light imaging system, the laser polarization state is accurately controlled, the polarization direction change is accurately detected, and the amplification and focusing functions of a microscopic imaging system are combined, so that the accuracy and comprehensiveness of the performance test of the Faraday piece adopting a magneto-optical film are improved, and the test cost is reduced.

The invention belongs to the technical field of water-jet guided laser processing, and relates to a water-jet guided laser optical path accurate control method which comprises a laser generator, an optical focusing system, a water-jet guided system, an optical detection system and a control system. The method comprises the following steps: 1, controlling an optical focusing system; 2, controlling a water guide system; 3, controlling an optical detection system; 4, designing a control system; 5, after the water-jet guided laser debugging process is completed, product machining is conducted; by accurately controlling the optical path of the water-guided laser, the laser beam can be focused to a smaller area, the machining precision is improved, and the machining precision can be improved to the submicron level; therefore, the control precision of the water-guided laser optical path is higher, the machining time can be shortened, the machining efficiency is improved, and thermal damage in the machining process is reduced.

The invention belongs to the technical field of water-jet guided laser processing, and relates to a water-jet guided laser optical mode water beam correction method, which comprises the following steps of: 1, constructing a triangular geometrical relationship; 2, arranging measuring points and sensors; 3, establishing three-dimensional space coordinates; 4, designing a control system; 5, calculating a deviation angle; 6, adjusting a control algorithm; 7, signal processing and data transmission; 8, performing cooperative control on the correction process; 9, the water-light debugging process is completed, and water-guided laser machining is carried out; according to the invention, the triangulation principle and reasonable arrangement are utilized, the water beam deviation angle can be measured with high precision, the theoretical precision reaches a sub-degree level, the measurement error is small under various interferences, and reliable data are provided for correction; therefore, the correction precision is high, and the machining precision requirement can be met.

The utility model relates to an air-cooled optical fiber laser, belongs to the field of lasers, and aims to solve the problems of complex structure and large occupied space of the existing optical fiber laser. The air-cooled optical fiber laser comprises a shell, a pumping source, an optical assembly, a first optical fiber disc, a second optical fiber disc, a gain optical fiber and a cooling fan, and the shell is provided with a containing cavity; the pumping source is positioned in the accommodating cavity and is used for emitting laser; the optical assembly is used for amplifying and outputting the laser emitted by the pumping source; the first optical fiber disc is arranged opposite to the pumping source; the second optical fiber disc and the first optical fiber disc are arranged at an interval, the second optical fiber disc and the first optical fiber disc are both provided with fiber winding grooves, and the pumping source and the optical assembly are both located between the second optical fiber disc and the first optical fiber disc; the gain optical fiber is arranged in the fiber coiling groove; and the cooling fan is fixedly connected with the shell. As the pumping source and the optical assembly are both located between the second optical fiber disc and the first optical fiber disc, the air-cooled optical fiber laser is simplified in structure, and the occupied space is reduced.

A print engine of an additive manufacturing system includes a print station configured to hold a removable cartridge. A laser engine including a frame can be positioned to hold at least one removable field replaceable unit that includes at least some laser optics or patterning optics. An optical alignment system can be attached to at least one of the print station or the laser engine to align the field replaceable unit with respect to the removable cartridge.

The invention relates to a laser package comprising: a base element having a mounting surface on which at least one semiconductor laser element is arranged; a cover element, at least partially transparent to the laser light emitted by the at least one semiconductor laser element, which is connected to the base element and forms a frame that surrounds the at least one semiconductor laser element in a lateral direction and encapsulates the at least one semiconductor laser element with the base element; an optical element arranged on the cover element; and at least one deflecting element arranged in the beam path of the at least one semiconductor laser element and configured to deflect laser light emitted by the at least one semiconductor laser element in the direction of the at least one optical element.The optical element is attached to the lid element by means of an adhesive material comprising: at least 10 percent of a silicone mixture; and a light-curing component. Furthermore, the adhesive material is light-activated and at least partially curable by light curing.

The invention provides a laser processing device and method, and the device comprises a laser device which is used for emitting laser; the optical system comprises a collimating lens, a shaping lens and a focusing lens, the laser is collimated and amplified by the collimating lens and then enters the shaping lens, the incident laser is converted into a flat-topped light spot from a Gaussian light spot by the shaping lens, and the flat-topped light spot is positioned on a bonding interface by moving the position of the focusing lens; the displacement table system comprises a longitudinal displacement table and a horizontal displacement table, and the longitudinal displacement table is used for driving the focus lens to move synchronously, so that the flat-topped light spot is located on a bonding interface; the horizontal displacement table is used for driving the heterogeneous bonding material to move synchronously so as to realize that the flat-topped light spot scans the whole bonding interface; the in-situ observation system is used for obtaining light spot images of the surface and the bonding interface at at least one height measurement point; and the processing control system is used for obtaining the moving distance of the focus lens according to the light spot image of the height measurement point so as to adjust the position of the focus lens. According to the method, the bonding interface can be optimized.

The invention relates to a coated high-laser-damage-threshold high-reflectivity laser optical element and a preparation method thereof.The preparation method of the coated high-laser-damage-threshold high-reflectivity laser optical element comprises the following steps that (1) a substrate is subjected to ultrasonic cleaning, then Ar plasma generated by an anode ion source is adopted for cleaning the substrate, and a pre-cleaned substrate is obtained; (2) alternately carrying out high-refraction layer coating and low-refraction layer coating on the surface of the pre-cleaned substrate obtained in the step (1) to obtain a coated substrate; and coating a protective layer on the surface of the obtained coated substrate to obtain the coated high-laser-damage-threshold high-reflectivity laser optical element. According to the method, before high-refraction layer coating and low-refraction layer coating are carried out, the Ar plasma generated by the anode ion source is adopted to clean the substrate, and the laser damage threshold value of the high-reflectivity laser optical element composed of the thin film and the substrate is remarkably increased.

A laser optics experiment kit comprises a puzzle-style baseplate; an adapter plate configured to releasably attach to the baseplate; a plurality of components configured to attach to the adapter plate and baseplate, including: a laser holder; a mirror mount assembly; a beamsplitter mount assembly; an iris mount assembly; a lens mount assembly; and a rotation plate assembly a baseplate; an adapter plate configured to directly attach to the baseplate; a plurality of adapter components configured to releasably attach in varying angular positions to the adapter plate, including: a mirror mount assembly; a beamsplitter assembly; an iris mount assembly; a lens mount assembly; and a viewing panel.

A flow cytometer of a blood analyzer including a transverse-electric (TE) laser diode, a flow cell, a quarter wave plate (QWP), a plurality of lenses, and a side scatter detector. The TE laser diode is configured to output a laser beam along an optical axis and has a fast axis full width at half maximum (FWHM) divergence of from about 16 degrees to about 25 degrees. The QWP is disposed along the optical axis between the TE laser diode and the flow cell and configured to circularly polarize the laser beam. The plurality of lenses is disposed between the TE laser diode and the flow cell and configured to focus the laser beam at the flow cell.

Laser welding device (1) for producing a welded joint (S) in the area of ​​a joint between at least two components (2, 3) by means of an emitted laser beam (LS) with - a laser scanner (4), having - at least one laser emitter (4.1) designed to emit laser radiation (L), and - at least one laser optic (4.2) designed to shape, direct and focus the emitted laser radiation (L) to form the laser beam (LS), - a measuring unit (4.3) which is designed, - to emit at least one measuring beam (MS) in such a way that it is guided to a predetermined point of impact on at least one of the components (2, 3), - to detect reflected components of the measuring beam (MS) and - to automatically determine depth data of the point of impact based on optical coherence tomography using measurement beam data (MD1 to MD3) determined from the reflected components, - a control unit (4.4) which is designed, - before welding, the measuring unit (4.3) is controlled so that it automatically scans a surface of the components (2, 3) in a grid-like scan movement using a measuring beam (MS), automatically determines geometric parameters of the components (2, 3) from depth data determined at the respective point of impact from measuring beam data (MD1), and stores the parameters as reference data in a database for different positions of the surface of the components (2, 3). - then, during welding, to control the laser scanner (4) so ​​that it directs the laser beam (LS) onto the surfaces of the components (2, 3) and at least partially melts the components (2, 3), and simultaneously to control the measuring unit (4.3) so that it automatically scans a generated melt (SM) using a measuring beam (MS) in a scanning motion and automatically determines depth data of a vapor capillary (DK) generated in the melt (SM) based on optical coherence tomography for different positions of the melt (SM) from measuring beam data (MD2), and - to compare the position-related depth data of the vapor capillary (DK) with the position-related reference data in a comparison process carried out simultaneously with or following welding, and to determine a position-related comparison depth of the vapor capillary (DK) in comparison to an initial state of the components (2, 3) existing before welding, wherein the measuring unit (4.3) is configured to emit at least one measuring beam (MS) into the at least one laser optic (4.2) in such a way that it is guided together with the laser beam (LS) to its point of impact.

The laser annealing system includes: a laser system; and a laser annealing device, which irradiates a first pulse laser and a second pulse laser to an irradiated object, the laser annealing device includes: an irradiation optical system, which guides the first pulse laser and the second pulse laser to the irradiated object; a moving mechanism, which causes the irradiation positions of the first pulse laser and the second pulse laser to move relative to the irradiation position of the irradiated object; and a control unit, which controls the laser system so that the irradiated object is irradiated with the first pulse laser, and after the irradiation with the first pulse laser, the area of ​​the irradiated object irradiated with the first pulse laser is irradiated with the second pulse laser, the laser system includes: a laser oscillator, which outputs a pulse laser; an optical pulse stretcher, which stretches the pulse laser output from the laser oscillator; and a gate, which is arranged on a delay optical path of the optical pulse stretcher, and the control unit controls the output of the first pulse laser and the second pulse laser by controlling the opening and closing of the gate.

Examples of a laser additive manufacturing system are described. The system comprises a laser configured to generate a laser beam, a fiber optic coupled to the laser to transmit the laser beam to a laser optic head that is coupled to the fiber optic and comprises a focus lens to focus the light beam. The laser optic head is configured to slide along a sliding mechanism in X-direction. A powder feeder is used to continuously move in Y-direction and dispense an uniform layer of powdered material onto a powder bad that is positioned on a build plate of the building chamber. The build plate is configured to move in Z-direction. The light beam generated by the laser is focused using the laser optic head onto a small region of the powder bed where the powdered material is positioned producing small volumes of melt pools that are then cooled and a new layer of powdered material is dispensed over it.

The invention relates to a method for surface treatment of a cylindrical housing (110) of an electrical energy storage device (100) made of metal by means of laser structuring, wherein the housing (110) has a housing shell (120) and an upper housing cover (111) surrounded by the housing shell (120) and a lower housing cover (112) surrounded by the housing shell (120), and the housing shell (120) is surface treated.According to the invention, during surface treatment, the housing (120) is guided in a holder (500) in a rotating manner such that a distance of a surface (130) of the housing shell (120) to a laser optics (200) emitting at least one laser beam (210) onto the surface (130), in particular a focus position of the laser optics (200), is kept constant and at least one structure (300, 310) is produced in the surface (130) surrounding the housing shell (120) by means of the at least one laser beam (210).

The application belongs to the technical field of laser optics, and particularly relates to a heat distortion resistant mirror seat for a high-power laser system; the mirror seat comprises a seat body, a plurality of convex bosses for limiting a mirror are arranged on the inner side wall of the seat body, a contact plate for bearing the mirror is arranged in the frame of the seat body, a group of heat dissipation fins are arranged on the bottom of the contact plate, flexible grooves and threaded holes are respectively arranged in the frame of the seat body at positions corresponding to the convex bosses, a flexible pressing ring is fixed to the top end of the seat body through the threaded holes and is used for pressing the mirror, mounting holes corresponding to the threaded holes are arranged on the flexible pressing ring, and a flexible groove of the pressing ring is arranged on the inner side of each mounting hole; the application is suitable for the working condition that the temperature of the mirror continuously rises, can effectively reduce the temperature level of the mirror, and effectively solves the mirror surface shape distortion problem caused by the fact that the mirror seat extrudes the mirror due to the mismatch of the thermal expansion coefficients of the mirror seat and the mirror.

The application relates to the technical field of optical processing, and discloses a laser optical processing system with adjustable imaging depth, which comprises a laser emission unit, an optical transmission unit, a spectral domain optical coherence tomography unit, a laser galvanometer scanning unit, an indicating light imaging unit, an image processing and display unit and a control unit. The wavelength scanning mode of the spectral domain optical coherence tomography system is driven by a scanning telescopic rotating module, time scanning of high output wavelength is realized, image processing technology is combined to provide position information or image information of a sample from a surface to an interior in real time, the position of the sample is scanned in real time by a three-dimensional galvanometer scanning unit, the position and directional information of a scanning point are recorded, the real-time image information of the sample is simultaneously scanned, different depths, widths and axial positions are realized, the focusing depth and wavelength of an imaging laser beam, the focusing position and energy of a scanning laser beam are adjusted and fed back, and the sample is positioned for processing.

A Raman fiber laser includes a pump light source, a reflective end mirror, a wavelength division multiplexer, a Raman gain fiber, and an output end mirror. The output end mirror is an ultra-low reflectance fiber Bragg grating. The reflective end mirror is connected to a reflective end of the wavelength division multiplexer. The pump light source is connected to an input end of the wavelength division multiplexer. One end of the Raman gain fiber is connected to a common end of the wavelength division multiplexer, and the other end of the Raman gain fiber is connected to the ultra-low reflectance fiber Bragg grating. The laser of the present invention can reduce loss of laser light at the reflective end mirror, thereby increasing laser light optical conversion efficiency and output power, and simultaneously achieving high time domain stability and extremely low coherence.

The present invention relates to the field of gas temperature measurement technology, and more specifically, to a gas temperature measurement system and method based on laser optical technology. It includes: a transmitting unit for emitting laser light and generating an interference area, so that the light intensity of the signal light fluctuates; a receiving unit is placed on the optical path of the reflected signal light, and is used to receive the light intensity change of the signal light; an analog-to-digital unit converts the voltage signal output by the receiving unit and stores it; a signal processing unit performs fast Fourier transform on the data signal sequence, obtains the fluctuation change frequency of the signal and generates a calibration coefficient, and calculates the gas temperature based on the calibration coefficient and the fluctuation frequency. The present invention is designed to convert the time domain signal into a frequency domain representation through fast Fourier transform, revealing the different frequency components in the signal; by analyzing the frequency components, the main frequency and secondary frequency in the signal can be identified, which helps to extract the key features of the signal, including the frequency peak.

A laser interferometer includes: a laser light source configured to emit first laser light; an optical modulator including a vibration element that generates a vibration component in a direction intersecting an incident surface of the first laser light, and configured to modulate the first laser light by using the vibration element to generate second laser light including a modulation signal; a photodetector configured to receive the second laser light and third laser light that includes a sample signal generated by the first laser light being reflected by an object, and output a light reception signal; a demodulation circuit configured to demodulate the sample signal from the light reception signal based on a reference signal; and an oscillation circuit configured to operate using the vibration element as a signal source and output the reference signal to the demodulation circuit.

The invention relates to the technical field of solid lasers, and particularly provides a narrow-linewidth tunable dual-wavelength laser output system based on data driving, which comprises a pumping source, a resonant cavity, a data acquisition unit and a data receiving and driving device, a single gain medium, two F-P etalon and an F-P angle regulator are arranged in the resonant cavity, the inclination angles of the two F-P etalon are adjusted through an F-P angle adjuster so as to perform longitudinal mode selection and wavelength tuning on the output laser of the resonant cavity; a neural network screening model is arranged in the data receiving and driving device, the neural network screening model is used for learning the mapping relation between intracavity parameters and output laser optical parameters, and dual-wavelength simultaneous locking and line width prediction are achieved through dual-etalon collaborative mode selection and data driving of the neural network screening model. According to the invention, the complexity of the system is greatly simplified, and dual-wavelength, narrow-linewidth, high-stability, repeatable and automatic laser output regulation and control which cannot be achieved by a traditional architecture are realized functionally.

The present application relates to the technical field of geophysical exploration, in particular to a downhole three-component magnetic field sensing system based on atomic magnetometer. The downhole three-component atomic magnetic field sensor is connected with the optical fiber signal modem in the ground well logging vehicle through the armored photoelectric composite cable. The optical fiber signal modem is used for real-time demodulation of the three-component magnetic field signals and three-component attitude signals measured by the three-component atomic magnetic field sensor. The three-component atomic magnetic field sensor comprises a non-magnetic high-temperature packaging structure, a high-temperature-resistant atomic gas chamber module, a three-axis orthogonal laser optical system, a high-temperature-resistant photoelectric detection array, a power management module, a temperature sensor, a magnetic field solving and signal processing unit and a three-component optical fiber attitude sensor which are arranged in the non-magnetic high-temperature packaging structure. The three-component atomic magnetic field sensor adopts the atomic magnetometer measurement principle, combines the high-temperature-resistant materials and the optimized heat dissipation design, and can work stably in an environment of up to 200 DEG C.

The invention discloses a beta distribution-based composite aberration construction method, which relates to the technical field of laser optics and comprises the following steps of: constructing a non-ideal laser initial light field; generating a Zernike polynomial weight coefficient based on a beta distribution model; substituting the weight coefficient into the phase expression to form a composite aberration mode, and substituting the composite aberration mode into the non-ideal laser initial light field to obtain a non-ideal laser initial light field with composite aberration; repeating the steps, generating N groups of different weight coefficient combinations corresponding to N composite aberration scenes, simulating transmission evolution of laser in atmospheric turbulence by adopting a multi-layer phase screen method for each group of aberrations, and performing simulation calculation; a simulation result change rule is observed by changing parameters of the beta distribution model, and a parameter-light spot quality mapping relation is established. According to the method, the beta distribution model is introduced, a brand new technical path is provided for flexible construction and high-precision simulation of the composite aberration, and the reliability and efficiency of laser optical system design can be effectively improved.