09 - Appareils et instruments scientifiques et électriques
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Laser welding machines; Laser engraving machines; Cutting machines; Portable laser engraving machines; Welding machines, electric; Optical fibre fusion splicers; Metal forming machines Lasers for industrial use; Integrated circuits; Optical lenses; Optical fibres; Amplifiers; Optical fiber connectors; Fibre optic couplings; Circulators in the nature of electronic components; Optical filters; Opto-isolators; Polarisation maintaining optical fibres; Downloadable computer software for controlling lasers and machines for the treatment of materials; Optical semiconductors; Recorded computer software for controlling and/or monitoring laser systems; Downloadable computer programs for controlling lasers and machines for the treatment of materials; Lasers for non-medical purposes Installation of computer software; Updating of computer software; Design of computer software; Services for maintenance of computer software; Updating of computer software for others; Updating of computer programs for third parties; Monitoring of computer system operation by remote access; Information technology consulting relating to computer software design; Information technology consultancy relating to installation, maintenance and repair of computer software; Data conversion of computer programs and data, not physical conversion; Research and development of new products for others
09 - Appareils et instruments scientifiques et électriques
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
laser welding machines; laser welding apparatus; laser engraving machines; engraving machines; cutting machines; washing apparatus; welding torches; optical fiber fusion splicers; metalworking machines; hand-held tools, other than hand-operated. lasers, not for medical purposes; optical apparatus and instruments; computer programs, downloadable; computer software applications, downloadable; optical lenses; optical fibers [light conducting filaments]; optical couplers; USB flash drives; computer software, recorded; optical semiconductors. installation of computer software; updating of computer software; computer software design; maintenance of computer software; computer program updating services; upgrading of computer software; monitoring of computer system operation by remote access; IT consultancy, advisory and information services; conversion of computer programs and data, other than physical conversion; research and development of new products for others.
A laser output system (100), comprising: a laser module (110) configured to output pump laser (L1); an optical switching module (120) configured to receive the pump laser outputted by the laser module, divide the pump laser into at least two paths of sub laser, and allocate the at least two paths of sub laser into multiple sub laser channels at different times or at the same time, wherein at least one path of sub laser is signal laser (L2); and multiple laser output heads (130) configured to collimate and focus the laser outputted by the multiple sub laser channels and then output the laser. The output system provides a multi-wavelength multiplexing optical gate capable of achieving the laser of two wavelengths by means of single-port input and multi-port output, satisfies the requirements of various processing technologies, and can reduce the processing cost. Further involved are a laser output method, a multi-wavelength multiplexing optical gate, a laser, and a laser processing method.
A pump source drive control device and method, and a fiber laser. The device comprises a controller (21), a pulse-width modulation module (22), a drive circuit (23), and at least one pump source (24) which are electrically connected in sequence. The pulse-width modulation module (22) is used for generating a modulated wave and a carrier according to an analog current signal of a preset value output by the controller (21), modulating the analog current signal of the preset value into a discontinuous waveform signal by means of pulse-width modulation to be used as a drive current signal, and inputting same to the drive circuit (23). Therefore, the advantage of high efficiency of the drive at full load can be sufficiently exerted. At the same time, the pump source (24) always works at the maximum current; therefore, there is no problem of linewidth caused by a continuous current. In addition, the pump source (24) can be enabled to always work in a rated current or no current state, and thus the influence of the current on output light of the pump source (24) is eliminated, the linewidth of the output light is smaller, the design of an optical path of the fiber laser is facilitated, and the wavelength having a high absorption rate is matched better to achieve the high efficiency operation of the fiber laser.
A laser, comprising: a pump light generation module, a laser light output module, a light power measurement module, and an alarming module. The pump light generation module is used for outputting pump light; an input end of the laser light output module is connected to an output end of the pump light generation module for outputting laser light; the light power measurement module is provided at the side of the output end of the pump light generation module and the side of an input end, and is used for measuring an output laser light power and a return light power; the alarming module is connected to the light power measurement module, and is used for outputting an early warning signal and/or turning off the laser when the ratio of the return light power to the output laser light power exceeds a preset value. The present invention can detect output laser light of the laser and return light returned to the laser, and turn off the laser or issue an early warning signal in time when the powers are too high, thereby greatly improving the safety and reliability of the laser.
Disclosed are a laser and a multi-wavelength output laser processing system. The laser comprises a pump assembly (1) for providing pump light, an active optical fiber (2) and an optical fiber output device (3), wherein the active optical fiber (2) is used for partially absorbing the pump light and amplifying signal light; a fiber core of the active optical fiber (2) is used for transmitting the signal light, and a cladding of the active optical fiber (2) is used for transmitting unabsorbed pump light; and the optical fiber output device (3) is used for transmitting a composite laser outputted by the active optical fiber (2). The laser and the multi-wavelength output laser processing system use a small number of devices and are low in cost.
Provided are a laser output head, a laser and a laser-machining apparatus. The laser output head comprises: an outer housing (100) provided with an accommodating space; an inner housing (200), which is accommodated in the accommodating space, is in sealed connection with the outer housing (100), defines a cooling cavity (110) together with the outer housing, and is provided with a through mounting space (210); an end cap (300), which is accommodated in the outer housing (100) and fixed to the inner housing (200), and at least partially extends into the mounting space (210), wherein in the axial direction of the outer housing (100), two ends of the end cap (300) are located between two ends of the cooling cavity (110); and an optical fiber (400), which is at least partially accommodated in the mounting space (210), with a first end portion of the optical fiber being fixed to the end cap (300), and a second end portion thereof passing through the mounting space (210) and extending out of the outer housing (100). The outer housing (100) is further provided with a first communication port (120) and a second communication port (130), which are respectively in communication with the cooling cavity (110). The cooling cavity (110) integrally covers a length region of the end cap (300) in the axial direction of the outer housing (100), and the laser output head can not only play a role in cooling the inner housing (200), but can also achieve a good cooling effect for the end cap (300).
A fiber laser, comprising a first resonant cavity, a second resonant cavity, pump sources (900), and a beam combiner (800); the first resonant cavity comprises a fourth grating (400), a first active optical fiber (500), and a first feedback element; a first end of the fourth grating (400) is connected to the first feedback element by means of the first active optical fiber (500); the second resonant cavity comprises a second grating (200), a second active optical fiber (600), and a second feedback element; a first end of the second grating (200) is connected to the second feedback element by means of the second active optical fiber (600); a Q switch (700) is provided in the first resonant cavity or the second resonant cavity; the pump sources (900) are connected to a pump end of the beam combiner (800); a signal end or an output end of the combiner (800) is inserted into the second resonant cavity and connected to the second active optical fiber (600); and a second end of the second grating (200) or a second end of the fourth grating (400) is connected to an output port of the fiber laser. The laser achieves active and passive dual Q-switching, helping to reduce the pulse width of the fiber laser, increasing peak power, and expanding the application of a pulsed fiber laser.
A control method and device for a laser system. The method comprises: a main control module determining laser control modules (1, 2, 3, ..., 7) in an operating state (101, 201); acquiring monitoring information in respect of the laser control modules (1, 2, 3, ..., 7) in an operating state (102, 202); generating a poll instruction according to the monitoring information and sending the poll instruction to the laser control modules (1, 2, 3, ..., 7) in an operating state (103, 203); and receiving feedback information returned on the basis of the poll instruction by the laser control modules (1, 2, 3, ..., 7) in an operating state (104, 204). Monitoring information in laser control modules (1, 2, 3, ..., 7) in an operating state is acquired (102, 202), a poll instruction is generated according to the monitoring information, and the poll instruction is sent to the laser control modules (1, 2, 3, ..., 7) in an operating state (103,203) other than to all laser control modules (1, 2, 3, ..., 7), thus reducing the number of the laser control modules (1, 2, 3, ..., 7) polled each time and thereby effectively increasing data update rate.
The present application relates to the field of optical fiber laser devices. Disclosed are an optical fiber laser device protection method and an optical fiber laser device. The method comprises: determining a working state of a pumping source; when the working state of the pumping source is a state of having output a laser, acquiring a detection signal, wherein the detection signal is used for indicating a transmission state of the laser being transmitted in an optical fiber; and generating protection information when the detection signal satisfies a preset protection condition. A light emission situation of a pumping source is detected by means of detecting a current signal in the pumping source, a detection signal is acquired after the pumping source normally outputs a laser, and protection information is quickly generated when the detection signal satisfies a preset protection condition, such that the degree of damage of an optical fiber laser device is reduced.
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
H01S 3/09 - Procédés ou appareils pour l'excitation, p. ex. pompage
14.
TRIPLE-CLAD FIBER, PUMP COMBINER, FIBER GRATING, AND FIBER LASER
A triple-clad fiber, a pump combiner (2, 7), a fiber grating (3, 5), and a fiber laser. A triple-clad passive fiber comprises a core (13), an inner cladding (14) covering the outer surface of the core (13), an outer cladding (15) covering the outer surface of the inner cladding (14), and a coating (16) covering the outer surface of the outer cladding (15). The diameter of the core (13) falls within the range of 10 to 50 micrometers, the diameter of the inner cladding (14) falls within the range of 250 to 800 micrometers, the diameter of the outer cladding (15) is greater than that of the inner cladding (14), and the diameter of the outer cladding (15) falls within the range of 300 to 1,000 micrometers. Alternatively, the diameter of the inner cladding (14) falls within the range of 80 to 100 micrometers, and the diameter of the outer cladding (15) falls within the range of 110 to 130 micrometers. The outer cladding (15) of the triple-clad passive fiber covering the outer surface of the inner cladding (14) greatly reduces the damage of the pump light on the organic coating (16). As a total reflection plane, the coating (16) has an extremely high damage threshold, thereby improving the stability and reliability of the fiber laser.
A triple-clad active optical fibre, an optical amplification structure, and an optical fibre laser. The triple-clad active optical fibre comprises a fibre core (20), an inner cladding layer (21) covering the outside of the fibre core (20), an outer cladding layer (22) covering the outside of the inner cladding layer (21), and a coating layer (23) covering the outside of the outer cladding layer (22), the shape of the cross-section of the inner cladding layer (21) being a regular octagon. The outer cladding layer (22) covering the outside of the inner cladding layer (21) greatly reduces the damage of pumping light to the organic coating layer (23); as a total reflection interface, the coating layer (23) has an extremely high damage threshold, and can reduce the refractive index of pure quartz to form a total reflection waveguide structure; the waveguide structure of the triple-clad active optical fibre can make most of the pumping light reflect on the outer cladding layer (22) interface, greatly reducing the reflection of high power density pumping light on the fragile organic coating layer (23) interface, and thereby greatly increasing the stability and reliability of the entire laser optical path.
A large-mode-area triple-clad passive fiber, a mode stripper, a laser output head and a fiber laser. The large-mode-area triple-clad passive fiber comprises a fiber core (27), an inner clad layer (28) covered outside the fiber core (27), an outer clad layer (29) covered outside the inner clad layer (28) and a coating layer (30) covered outside the outer clad layer (29). The cross-sectional shape of the fiber core (27) is a regular octagon. The cross-sectional shape of the outer clad layer (29) is a regular decagon. The cross-sectional shape of the inner clad layer (28) and the coating layer (30) is circular. The large-mode-area triple-clad passive fiber improves the stability and reliability of the fiber laser.
Provided in the embodiments of the present application is a closed-loop control high-power single-fiber output continuous all-fiber laser system, comprising: an oscillator-stage module and an amplifier-stage module connected to the oscillator-stage module, wherein the oscillator-stage module comprises at least one oscillator-stage pump light generation module, and an oscillator-stage laser generation module connected to an output end of the at least one oscillator-stage pump light generation module by means of an optical fiber; and the amplifier-stage module comprises at least one amplifier-stage pump light generation module, and an amplifier-stage active optical fiber connected to an output end of the at least one amplifier-stage pump light generation module. By means of the embodiments of the present application, stability and the reliability of the closed-loop control high-power single-fiber output continuous all-fiber laser system are realized, thereby facilitating commercial production.
H01S 3/102 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation par commande du milieu actif, p. ex. par commande des procédés ou des appareils pour l'excitation
18.
MYRIAWATT-LEVEL ULTRA-HIGH POWER FULL FIBER CONTINUOUS FIBER LASER SYSTEM
Provided by embodiments of the present application is a myriawatt-level ultra-high power full fiber continuous fiber laser system, comprising: a general electrical control module, at least two laser modules respectively connected to the general electrical control module, and a laser synthesizing module connected to output terminals of the at least two laser modules; the general electrical control module is used to respectively control the start-up or shut down of each laser module and to respectively monitor the operating states of each laser module and the laser synthesizing module; the laser modules are used to independently generate a laser having a preset first power; and the laser synthesizing module is used to couple lasers outputted by the laser modules that are started up and to output a coupled laser having a preset second power. By means of embodiments of the present application, the output of a high-power laser is achieved. At the same time, the modular design in which a sub-electrical control module, a sub-power module, and a laser module are integrated into a laser module enables the structural and functional design of the myriawatt-level ultra-high power full fiber continuous fiber laser system to be concise, and apt for commercial batch production.
A photoelectric module and a high-power multi-modular laser comprising a photoelectric module, the photoelectric module comprising an installation box (2) and at least one photoelectric module (4) arranged in the installation box (2). The photoelectric module (4) comprises an electric module (41) and at least two light modules (42) connected to the electric module (41) respectively, and in the same photoelectric module (4), each light module (42) generates laser light under the drive of the electric module (41). The present laser has a compact structure, fewer parts, a reduced volume and weight, reduced costs and convenient assembly. By means of increasing the number of photoelectric modules (4) or replacing the light modules (42) in the photoelectric module (4) with light modules (42) that have greater output power, high powered output such as ten kilowatt laser light may be achieved.
An optical power attenuation adjustment system (300) and method, and a laser welding system, for use in the field of lasers. The optical power attenuation adjustment system (300) comprises an optical power attenuation control apparatus (10) and an optical power attenuation apparatus (20), the optical power attenuation control apparatus (10) comprising a processor (11) and a light intensity sensor (15) and a drive module (16) respectively electrically connected to the processor (11), the drive module (16) being electrically connected to the optical power attenuation apparatus (20); the harm to the laser (100) and the QBH collimation system (200) caused by reflected light during high-power welding is thereby avoided, increasing the overall safety of laser welding.
A laser protection method and apparatus. The method comprises: setting values of a laser pulse marker and a PD pulse marker as preset first values when a laser pulse period begins; setting the value of the PD pulse marker as a preset second value when PD pulse is detected; setting the value of the laser pulse marker as a second value when the laser pulse period ends; determining whether the value of the laser pulse marker is consistent with the value of the PD pulse marker or not; if not, determining that a fault occurs in a laser; and if yes, returning to the beginning step to continue with a next pulse. Since the laser pulses have one-to-one correspondence to the PD pulses in a laser period, and if they do not have one-to-one correspondence, the PD pulse has deficiency and it is indicated that a fault occurs in a laser, only one laser period is required for the maximum laser protection delay, the real-time performance of laser protection is ensured, and the problem in the prior art that laser protection is not in time is solved.
H01S 3/10 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation
A solid laser device (100), comprising: a first laser module (110) configured to convert a first laser source into first laser; a first rotatable mirror (141) provided with a first mirror portion (1411), a second mirror portion (1412), and a third mirror portion (1413), the first rotatable mirror (141) being configured to, at a first position, reflect the first laser by means of the first mirror portion (1411), and at a second position, transmit the first laser by means of the second mirror portion (1412) and the third mirror portion (1413); a second laser module (120) configured to convert a second laser source into second laser; a second rotatable mirror (142) provided with a fourth mirror portion (1421) and a sixth mirror portion (1423), the second rotatable mirror (142) being configured to, at a third position, reflect the first laser by means of the sixth mirror portion (1423) and transmit the second laser by means of the fourth mirror portion (1421); and a third laser module (130) configured to convert the first laser and the second laser into third laser. By means of the method, laser of different wavelengths can be selected to be output, and the laser has high power intensity.
A laser and a light exiting control method and apparatus therefor, and a laser device. The light exiting control method for the laser comprises: S101, receiving MO, BS, and EN generated and outputted by a laser controller (200); S102, detecting the EN in real time, when EN is detected to have a high level, starting timing according to a preset first timer, and adjusting the high level to a low level in the timing process of the first timer to generate EN_new; S103, in the timing process of the first timer, when the low level of EN is detected, controlling the first timer to be cleared, and then returning to S102; S104, determining whether the result of timing the first timer reaches a time value of the preset first timer, if so, turning off the first timer, and adjusting EN_new to a high level. The light exiting control method for the laser can prevent the laser (100) from abnormal light exiting caused by the unstable state in the power-on process of the laser controller (200).
H01S 3/102 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation par commande du milieu actif, p. ex. par commande des procédés ou des appareils pour l'excitation
24.
LASER POWER STABILIZATION SYSTEM, AND METHOD AND DEVICE FOR ADJUSTING LASER POWER
A laser power stabilization system (100), and a method and device for adjusting laser power. The laser power stabilization system (100) comprises: a laser resonant cavity (10), which comprises a mechanical adjustment device (101); a beam splitter (11); a power detector (12), which is used to obtain laser light beam-splitted by the beam splitter (11) so as to detect output power of a laser; and a controller (13), which is separately connected to the power detector (12) and the mechanical adjustment device (101). The controller (13) is used to obtain the output power and determine whether the output power complies with a preset standard output power. If not, an adjustment instruction is sent to the mechanical adjustment device (101) according to the output power so as to control the mechanical adjustment device (101) to perform an adjustment, so that the output power complies with the preset standard output power. When the problem of power reduction occurs, there is no need for intentional shutdown and maintenance, and self-recovery and adjustment are performed while the machine is in use. The entire process is automatically controlled without any manual adjustments, making power recovery faster and more accurate.
A solid laser device (100), comprising: a laser input module (110) for generating and emitting a laser light source; a first wavelength laser generation module (120), provided at an output end of the laser input module (110), and used for converting the laser light source into first laser light and output the first laser light; a rotatable lens (130), provided at an output end of the first wavelength laser generation module (120), the rotatable lens (130) being provided with a first region (131) and a second region (132), the rotatable lens (130) being used for, when in a first position, transmitting the first laser light through the first region (131) and outputting the first laser light in a first output direction of the rotatable lens (130), and when in a second position, reflecting the first laser light by means of the second region (132) and outputting the first laser light in a second output direction of the rotatable lens (130); and a second wavelength laser generation module (140), provided in the second output direction of the rotatable lens (130), and used for converting the first laser light reflected by the second region (132) into second laser light and output the second laser light. According to the present invention, laser light having different wavelengths is able to be selected to be outputted, and laser light of only one required waveband is outputted at the same time, and the conversion efficiency is relatively high.
H01S 3/10 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation
H01S 3/101 - Lasers munis de moyens pour changer l'origine ou la direction du rayonnement émis
H01S 3/109 - Multiplication de la fréquence, p. ex. génération d'harmoniques
A laser and a laser output head (100). The laser output head (100) comprises a water-cooling assembly internally mounted with a laser energy transfer component and performing water cooling on the laser energy transfer component to dissipate heat. The water-cooling assembly comprises a housing (1) and a water-cooled member (13). The water-cooled member (13) is accommodated in the housing (1). The outer wall of the water-cooled member (13) is formed with cooling grooves (131, 132) of a double helix structure. The two cooling grooves (131, 132) are communicated at one end, and a water inlet port and a water outlet port are respectively formed at the other end. The water-cooled member (13) is abutted against and fastened to the inner wall of the housing (1) by means of a convex portion (130), forming the cooling grooves (131, 132), on the outer wall of the water-cooled member (13). The contact area between the cooling water and the water-cooled member (13) is increased, and the heat dissipation efficiency can be improved so that the heat is dissipated timely, and the problem of burning an optical fiber (21) or the laser can be effectively prevented due to the strong return light.
A method and apparatus for adjusting output power of a pulsed laser (100), and a pulsed laser (100). The method for adjusting output power of a pulsed laser (100) comprises: if the percentage of the input power of a pulsed laser (100) is equal to zero, controlling both the current value in a first-stage optical path (12) of the pulsed laser (100) and the current value in a second-stage optical path (13) of the pulsed laser (100) to be zero; if the percentage of the input power of the pulsed laser (100) is greater than zero and less than or equal to a reference ratio, controlling the current value in the first-stage optical path (12) to be in a linear relationship with the percentage of the input power, and controlling the current value in the second-stage optical path (13) to be zero; and if the percentage of the input power is greater than the reference ratio, controlling the current value in the first-stage optical path (12) to be a first current value, and controlling the current value in the second-stage optical path (13) to be in a linear relationship with the percentage of the input power. This method implements the adjustment of the output power of the pulsed laser (100) from zero, and ensures that said output power can be adjusted to relatively low ideal output power in precision applications.
H01S 3/102 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation par commande du milieu actif, p. ex. par commande des procédés ou des appareils pour l'excitation
B23K 26/062 - Mise en forme du faisceau laser, p. ex. à l’aide de masques ou de foyers multiples par commande directe du faisceau laser
A control method for a laser (30), an electronic control apparatus (300), the laser (30), a laser drilling device, and a storage medium. The control method for the laser (30) comprises: collecting a rising edge or falling edge of a control signal to form a capture signal; outputting a laser pulse according to the capture signal; and starting timing when one laser pulse is outputted, and allowing a next laser pulse to be outputted when a time obtained by timing reaches the minimum period of the laser pulse, and stopping the next laser pulse from being outputted when the time obtained by timing exceeds the maximum period of the laser pulse. The control method for the laser (30), the electronic control apparatus (300), the laser drilling device, and the laser (30) on the one hand are capable of outputting a laser pulse along with a control signal, and on the other hand are capable of limiting the period of the laser pulse between the minimum period and the maximum period, which is advantageous in ensuring the working performance of the laser and reducing safety hazards.
H01S 3/10 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation
29.
LASER PULSE POWER CONTROL METHOD, PULSE OPTICAL FIBER LASER DEVICE, AND LASER CUTTING SYSTEM
A laser pulse power control method, a pulse optical fiber laser device (3), and a laser cutting system. Said method comprises: acquiring an analog input signal and receiving a laser control pulse signal (S101); detecting the laser control pulse signal, and when any one laser control pulse is detected, switching a laser device to a laser output state, also acquiring an analog value of the analog input signal in a continuous time period of the laser control pulse, and obtaining, according to the analog value, the magnitude of working current driven by laser light (S102); generating a control signal on the basis of the working current, so as to enable the laser device to output, according to the magnitude of the working current, a laser pulse having a corresponding power in the continuous time period (S103). The pulse optical fiber laser device (3) and the laser cutting system are used to execute the laser pulse power control method. According to the present invention, the laser pulse power is controlled by means of the analog input signal and the laser control pulse signal which are continuously inputted, such that a control interface (50) is simpler, the control efficiency is higher, and synchronous control can be realized.
A communication method between a laser (10) and an external device (20), and a laser system. The communication method comprises: allowing the laser (10) to continuously receive, at a first time interval (t1), data request signals sent by the external device (20) (S101); and after the external device (20) receives receipt data returned by the laser (10) for the first time, allowing the external device (20) to synchronously continuously receive, at a second time interval (t2), subsequent receipt data returned by the laser (10) (S102), wherein the first time interval (t1) and the second time interval (t2) are both smaller than a communication period (Ta, Tb) between the laser (10) and the external device (20), and the second time interval (t2) may vary within a certain range. The laser system comprises the laser (10) and the external device (20), and used for performing the communication method above. More effective information can be transmitted in real time in a unit time, the working state information of the laser (10) can be acquired timely during the working period of the laser (10), and real-time monitoring of the laser (10) can be implemented.
A laser operating method, comprising: receiving a pre-set first waveform data package, wherein the pre-set first waveform data package comprises first waveform data composed of digital signals; verifying the received first waveform data package, and determining whether the first waveform data in the first waveform data package meets a pre-set criterion; and if the first waveform data in the first waveform data package meets the pre-set criterion, storing the first waveform data, and outputting a laser pulse according to the first waveform data. The method reduces errors in a data transmission process, and facilitates the improvement of the accuracy of a laser pulse output finally. In addition, an application scenario of the laser is simplified, and the intelligent performance of laser application is improved. The present invention also relates to a quasi continuous wave laser and a laser cutting and welding system.
Disclosed in the present invention are a filtering method for frequency acquisition, a device, a computer readable storage medium, and a laser. The filtering method for frequency acquisition comprises: consecutively acquiring time intervals between adjacent rising edges and/or adjacent falling edges of a square wave signal; calculating a difference between two adjacent time intervals, if the difference exceeds a time threshold, discarding the two adjacent time intervals, otherwise retaining the two adjacent time intervals, and completing a first filtering operation; and comparing one of the two adjacent time intervals retained after the first filtering operation against a minimum period, retaining the two adjacent time intervals retained after the first filtering operation if one of the two adjacent time intervals retained after the first filtering operation is greater than the minimum period, and completing a second filtering operation. The technical solution of the present invention is time-efficient, filters out interference signals to a large degree, and does not readily cause a change of a waveform of a square wave signal.
H01S 3/00 - Lasers, c.-à-d. dispositifs utilisant l'émission stimulée de rayonnement électromagnétique dans la gamme de l’infrarouge, du visible ou de l’ultraviolet
Disclosed are a laser and a control method therefor. The method comprises: acquiring a maximum amount of heat that is allowed to be continuously output by a laser during a preset duration and a laser output power represented by a control signal that controls the output of the laser and is obtained by means of real-time monitoring; calculating a cumulative amount of laser output heat according to the laser output power and the output duration; calculating the remaining output time according to the maximum amount of heat, the cumulative amount of laser output heat, and the laser output power represented by the control signal monitored in real time; and turning off the laser when the remaining output time is reached or a preset time before the remaining output time is reached. The embodiments of the present invention propose a "self-reduction" algorithm to calculate the amount of heat that can be output by the current laser in real time. By means of subtracting a cumulative amount of laser output heat from the maximum amount of heat, and combining same with the current laser output power, it is possible to quickly calculate how long the amount of laser output heat can last, and the laser can be controlled to turn off to protect itself when the amount of heat is used up.
H01S 3/10 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation
H01S 5/068 - Stabilisation des paramètres de sortie du laser
34.
LASER CONTROL METHOD, LASER DEVICE, AND STORAGE MEDIUM
A laser control method, a laser device, and a non-volatile computer readable storage medium. The laser control method comprises: obtaining and parsing laser pulse configuration information to obtain a set of waveform data, and generating a laser control signal according to the set of waveform data, wherein the waveform data comprises the duration of a waveform and the amplitude of the waveform in the duration (S10); and controlling laser output according to the laser control signal (S20). The laser device comprises a control motherboard (100) and a laser pumping control module (200) connected to the control motherboard (100). The control motherboard (100) is provided with an information acquisition module (110), a processing module (120), and a control signal generation module (130) electrically connected in sequence. By configuring the waveform of a laser output pulse before a laser outputs laser light to implement amplitude control of laser pulse outputted by the laser, the precision of laser processing can be improved, and in addition, one laser can output different laser pulses, so that the demands of various laser precision processing application scenes can be met.
H01S 3/11 - Blocage de modesCommutation-QAutres techniques d'impulsions géantes, p. ex. vidange de cavité
H01S 3/10 - Commande de l'intensité, de la fréquence, de la phase, de la polarisation ou de la direction du rayonnement, p. ex. commutation, ouverture de porte, modulation ou démodulation
B23K 26/00 - Travail par rayon laser, p. ex. soudage, découpage ou perçage
35.
CONTROL SYSTEM FOR LASER, LASER, AND DEVICE WITH LASER
A control system for a laser, a laser, and a device with a laser. The control system for a laser comprises a first-level optical path control module (1) configured to control a first-level optical path operating current of a first-level primary pumping source, a first-level optical path configuration module (2) configured to configure the first-level optical path operating current, a second-level optical path control module (3) configured to control a second-level optical path operating current of a second-level pumping source, a second-level optical path configuration module (4) configured to configure a full operating current of the second-level pumping source, and a processing module (5), wherein the processing module sends a first-level optical path operating current control signal to the first-level optical path control module according to the first-level optical path operating current configured by the first-level optical path configuration module; and the processing module and the second-level optical path configuration module jointly configure the full operating current controlled by the second-level optical path control module.
The embodiments of the present application relate to the technical field of lasers, and disclose a laser controlling method and apparatus, a laser, and a device having the laser. The laser controlling method comprises: performing isolation and matching on a received power control signal, and dividing same into a first signal and a second signal; sampling the first signal, and then setting same to monitor a working state of the laser; and outputting the second signal to control the power of a pumping source, so as to quickly respond to the power control signal.
09 - Appareils et instruments scientifiques et électriques
Produits et services
Foundry machines; stamping machines; engraving machines;
glass-working machines; cutters [machines]; metalworking
machines; soldering apparatus, electric; machines and
apparatus for cleaning, electric; 3D printers. Computer software, recorded; lasers, not for medical
purposes; optical apparatus and instruments; fibre optic
cables; semi-conductors; optical fibres [light conducting
filaments]; electric installations for the remote control of
industrial operations; correcting lenses [optics];
photovoltaic cells.
Casting machines; automatic stamping machines; engraving machines; glass-working machines; laser engraving machines for metalworking; metal forming machines; metal working machines, namely, machining centers; soldering apparatus, electric; machines for blast cleaning a surface, electric
39.
HIGH-POWER LASER OPTICAL-FIBER CLADDING LIGHT STRIPPER AND METHOD FOR MANUFACTURE
Provided is a high-power laser optical-fiber cladding light stripper (10), comprising a low-temperature glass tube (4) sleeved on an optical fiber cladding (1) from which the coating layer has been stripped, and a first fixed glass tube (2) and second fixed glass tube (6) fixed at the two ends of the low-temperature glass tube (4), respectively, and also comprising a high-refractive-index glass tube (3) sleeved and fixed outside the first fixed glass tube (2), the low-temperature glass tube (4), and the second fixed glass tube (6); the outer side of the high-refractive-index glass tube (3) comprises a corrosion mold-stripping part (5), thereby causing the high-refractive-index glass tube (3) to produce microcracks and expose cladding light; the manner of corrosion is gradient corrosion. The optical-fiber cladding light is guided layer-by-layer to the high-refractive-index glass tube (3) and is corroded outside the high refractive index glass tube (3), causing the light on the high-refractive-index glass tube (3) to scatter instead of forming a waveguide on the high-refractive-index glass tube (3); it is not likely for heat accumulation and a resulting blown fiber to occur.
A method for adjusting the degree of isolation, an optical fiber isolator, and a fiber laser. The method for adjusting the degree of isolation is applied to an optical fiber isolator. A magneto-optical rotation crystal (22) and a half-wave plate (24) are provided in the beam isolation structure (2) of the optical fiber isolator. The optical rotation angle of the magneto-optical rotation crystal (22) is represented by angle θ, where angle θ = K × λ × B × L; the half-wave plate (24) forward rotates the polarization direction of forward incident e polarized light and o polarized light by angle β when the magneto-optical rotation crystal (22) forward rotates the polarization direction of the forward incident e polarized light and o polarized light by angle θ. When angle θ changes, the half-wave plate (24) is rotated so that angle β is equal to angle θ. At this time, the magneto-optical rotation crystal (22) and the half-wave plate (24) have the maximum degree of isolation of reverse light. Also disclosed is a fiber laser comprising the optical fiber isolator. The optical fiber isolator facilitates simplification of the structure and improvement in use convenience.
G02F 1/09 - Dispositifs ou dispositions pour la commande de l'intensité, de la couleur, de la phase, de la polarisation ou de la direction de la lumière arrivant d'une source lumineuse indépendante, p. ex. commutation, ouverture de porte ou modulationOptique non linéaire pour la commande de l'intensité, de la phase, de la polarisation ou de la couleur basés sur des éléments magnéto-optiques, p. ex. produisant un effet Faraday
A fiber laser (200) and a liquid-cooling plate (100) thereof; the cooling plate (100) comprises a liquid-cooling plate (100) body and a guiding tube (30); the liquid-cooling plate (100) body is provided therein with a plurality of penetrating holes (10) through which circulating flow cooling liquid flows so as to carry off heat; the guiding tube (30) is connected between two penetrating holes (10) such that the plurality of penetrating holes (10) are sequentially connected end to end to form a circulating water channel through which the cooling liquid flows. As the present invention does not use drilling technology to open up an excessive amount of water channel openings, a water channel blocking position is not generated on the liquid-cooling plate, and the problem of a blocking member occupying an excessive amount of effective usage space on the water channel of the liquid-cooling plate does not occur; the liquid-cooling plate (100) body is integrally formed, and the water channel is not opened by using a manner of side drilling, the manufacturing process being easy and the workload being small.
The present invention discloses a method for detecting influence on a laser from back-reflected light of the laser and a detection device. The method includes: receiving laser light input by a laser; splitting the input light into first detection light and second detection light via a beam coupler having a specific distribution proportion, and outputting the first detection light and the second detection light to a first optical power meter and an adjustable reflector, respectively; receiving a part of the second detection light reflected by the adjustable reflector, splitting the part of the second detection light reflected by the adjustable reflector into first back-reflection light and second back-reflection light, and returning the first back-reflection light and the second back-reflection light to the laser and the first optical power meter, respectively, detecting power of the first detection light by using the first optical power meter, and detecting power of the second back-reflection light by using a second optical power meter, and calculating power of the input light of the laser and power of the first back-reflection light, and establishing a power corresponding relationship between the power of the first back-reflection light and the power of the input light of the laser. By means of the foregoing manner, the present invention can detect a corresponding relationship between power of back-reflection light and power of input light of a laser.
G02B 26/08 - Dispositifs ou dispositions optiques pour la commande de la lumière utilisant des éléments optiques mobiles ou déformables pour commander la direction de la lumière
The present invention discloses a method for controlling a laser marking machine and a laser marking machine. The laser marking machine includes an interface module, a processing module, a laser control module and a galvanometer control module. The interface module receives marking data packets and transfers the marking data packets to the processing module. The processing module parses the marking data packets to obtain marking instructions and control parameters, extracts laser control instruction(s) and galvanometer control instruction(s) from the marking instructions, extracts laser control parameter(s) and galvanometer control parameter(s) from the control parameters, transfers the laser control instruction(s) and the laser control parameter(s) to the laser control module, and transfers the galvanometer control instruction(s) and the galvanometer control parameter(s) to the galvanometer control module.
B41J 2/47 - Machines à écrire ou mécanismes d'impression sélective caractérisés par le procédé d'impression ou de marquage pour lequel ils sont conçus caractérisés par l'irradiation sélective d'un matériau d'impression ou de transfert d'impression utilisant la combinaison du balayage et de la modulation de lumière
44.
LASER MARKING MACHINE CONTROL METHOD AND LASER MARKING MACHINE
A laser marking machine comprises an interface module (21), a processing module (22), a laser control module (23) and a galvanometer control module (24). The interface module (21) receives a marking data packet and sends the marking data packet to the processing module (22). The processing module (22) parses the marking data packet, obtains a marking instruction and a control parameter, extracts a laser control instruction and a galvanometer control instruction from the marking instruction, extracts a laser control parameter and a galvanometer control parameter from the control parameter, sends the laser control instruction and the laser control parameter to the laser control module (23) and sends the galvanometer control instruction and the galvanometer control parameter to the galvanometer control module (24). A laser marking machine control method is applied to the laser marking machine. The laser marking machine and the control method therefor do not need to code and decode the laser control instruction, the laser control parameter, the galvanometer control instruction and the galvanometer control parameter, which is very convenient.
B41J 2/435 - Machines à écrire ou mécanismes d'impression sélective caractérisés par le procédé d'impression ou de marquage pour lequel ils sont conçus caractérisés par l'irradiation sélective d'un matériau d'impression ou de transfert d'impression
