CN105514780A - Laser for cutting leather and control method for realizing leather cutting - Google Patents
Laser for cutting leather and control method for realizing leather cutting Download PDFInfo
- Publication number
- CN105514780A CN105514780A CN201511010926.XA CN201511010926A CN105514780A CN 105514780 A CN105514780 A CN 105514780A CN 201511010926 A CN201511010926 A CN 201511010926A CN 105514780 A CN105514780 A CN 105514780A
- Authority
- CN
- China
- Prior art keywords
- laser
- power
- frequency
- radio
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/0007—Applications not otherwise provided for
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/097—Processes or apparatus for excitation, e.g. pumping by gas discharge of a gas laser
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/102—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
- H01S3/104—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation in gas lasers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/22—Gases
- H01S3/223—Gases the active gas being polyatomic, i.e. containing two or more atoms
- H01S3/2232—Carbon dioxide (CO2) or monoxide [CO]
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention provides an RF CO2 laser for cutting. The pulse power of the CO2 laser is at least three times of an average power so that a highest average power can be obtained on condition that the working duty ratio of an RF power supply is in 25%. The RF CO2 laser comprises a laser 1 and the RF power supply 2, wherein the RF power supply 2 comprises a control module 3 and a peak-value RF module 4. The peak-value RF module 4 is composed of a front-stage microstrip distribution board 9, a power amplification board 10 and a peak-power combining board 11. The peak-power combining board 11 is composed of a plurality of air microstrip lines.
Description
Technical field
The present invention relates to a kind of ultrashort pulse radio frequency CO2 laser, particularly relate to field of lasers.
Background technology
Now on the market for the gas laser of leather cutting, general is all with carbon dioxide radio frequency laser, general use laser average power is between 200 ~ 400w, modulating frequency 1 ~ 100KHz, duty ratio is 0 ~ 40%, such as the DiamondJ3 power of relevant company is duty ratio 0 ~ 60% between 10 ~ 250w, the SR25i series laser power of Rofin company is 0 ~ 60% in 10 ~ 250w duty ratio, and energy will reach maximum average laser power just needs 60% of a working pulse cycle.Above-described peak laser power is about the twice of average power, and peak power is not high, and during laser irradiation material to be cut, material gasification is not obvious.Excite duty ratio 60%, laser irradiation time is long, large to the thermal impact of kerf edge, so can carbonization phenomenon be there is when cutting hides, can turn to be yellow or turn black in the cut edge of leather, thus affect the outward appearance of product, main cause is exactly that laser needs the time reaching for 60% pulse period just can reach average power, thus heat be just transmitted to edge leather on make it to be burnt.
Summary of the invention
A kind of radio frequency CO2 laser for cutting hides is the invention provides in order to solve the problem, this laser is mainly through the radio-frequency power supply of a peak value, make laser just can reach maximum power value in very little duty ratio, just machined object can be gasified in a short period of time, reduce cut material heat transfer, make that leather joint-cutting is fresh does not have obvious carbonization burned black.The pulse duty factor maximum 25% of this kind of laser, the time is short nearly 2 ~ 4 times.
Accompanying drawing illustrates:
Fig. 1 is system connection diagram of the present invention;
Fig. 2 is internal system module diagram of the present invention;
Fig. 3 is the inner connection layout of control module of the present invention;
Fig. 4 is peak value radio-frequency module connection layout of the present invention;
Fig. 5 is PWM of the present invention and power relation figure;
Fig. 6 is air microstrip line structural representation of the present invention;
The explanation of specific works principle
The main principle of laser leather cutting processing is on processed leather by focused laser beam, power on Laser Focusing point is very high, can leather transient evaporation, and coordinate the motion of lathe just leather can be cut into required shape again, because all for consumer goods market, so the requirement trimming of cutting technique is smooth, can not have and burn blackout, in order to reach this technological requirement, just need laser can reach maximum pulse peak power at short notice, just can reach required power gasification leather.Radio frequency laser is with pulse modulated mode Emission Lasers, the mean value of laser power when laser power and low level when the size of a pulse period inner laser average power is high level, time laser output average power is certain, illustrate time duty ratio is large that the pulse peak power of laser is relatively low, otherwise when duty ratio is little time, illustrate that the pulse peak power of laser is relatively high, what the present invention solved improves pulse peak power when average power is constant exactly, shortens duty ratio simultaneously.The size of average laser power is determined by modulation duty cycle, just required average power content can be reached when duty ratio reaches the maximum of setting, laser in such as existing market is all with duty ratio more than 40%, and that is laser will reach average power just needs duty ratio to be transferred to duty ratio more than 40%.Described duty ratio 40% meaning is within a pulse period, so the time of laser 40% goes out laser, remaining 60% time does not go out laser, therefore in so long time heat conduction cuts to leather, otch just likely turns to be yellow and burns, therefore we develop the radio frequency injecting power of the same discharge space of a laser far away higher than existing radio frequency laser now, the object improving radio-frequency power supply power improves the peak power of laser momentary pulse, the injection that just can reach radio-frequency (RF) energy within making the duty ratio of 25% is saturated, that is just can realize laser highest energy with the time of 25% in the pulse period to export instantaneously, shorten the thermal impact time to material to be cut, reduce the situation of burning and turning black of material to be cut kerf edge, more short pulse power is higher for this duty ratio, less to the thermal impact of leather joint-cutting, the duty ratio needed thicker leather is less, required pulse power is higher, more favourable to joint-cutting quality.In a word, for leather cutting pulse power higher, the time more short quality being more conducive to joint-cutting.The such as laser of Output of laser energy 350 watts, plasma discharging volume is 61200 cubic millimeters, the maximum Implantation Energy of radio frequency is 6000 watts, duty ratio 60% can export the laser of 350 watts, duty ratio laser output power more than 60% is just saturated, and 350 is exactly the laser pulse peaks power of 583 watts divided by 60%.And the laser of the same Output of laser energy of the present invention 350 watts, plasma discharging volume is 61200 cubic millimeters, the maximum Implantation Energy of radio frequency is 24000 watts, duty ratio 15% can export the laser of 350 watts, duty ratio laser output power more than 15% is just saturated, and 350 is exactly the laser pulse peaks power of 2333 watts divided by 15%.Can find out and increase radio frequency Implantation Energy, pulse peak power significantly improves, and is conducive to the speed being irradiated with a laser thing surface transient evaporation, improves gasification result and reduce carbonization phenomenon.Shortening duty ratio is to reduce the heat conducting time within a working pulse cycle, thus reduces edge because of the jaundice that produces of generating heat and burn phenomenon.
Described laser is primarily of two part compositions, laser 1 and radio-frequency power supply 2, the effect of laser 1 is that the radio-frequency (RF) energy of input is converted into luminous energy, the effect of radio-frequency power supply 2 is power current, radio-frequency current is transformed into supply laser through frequency translation, play the effect of a pumping, it is more than three times of average power that described radio-frequency power supply has an important parameter to be exactly pulse power, performance number when average power refers to that laser reaches capacity, and peak power refers to the maximum power value that radio-frequency power supply 2 can export, when if peak power equals average power, that is radio-frequency power supply 2 operative duty cycles is 100%, laser power just can reach capacity, if and peak power be more than three times in other words radio-frequency power supply 2 operative duty cycles be 25% or less time just can reach the saturation value of laser power, thus can allow laser within the very short cycle, produce very high light peak power.And whole Optical Maser System also can be regarded as by control module 3, peak value radio-frequency module 4, laser tube 1 forms.Control module 3 and peak value radio-frequency module 4 constitute radio-frequency power supply 2, control module 3 receives external control pwm signal, after computing, output pwm signal is to peak value radio-frequency module 4, and radio-frequency (RF) energy is sent to laser tube 1 after signal is amplified by described peak value radio-frequency module 4.Described control module 3 is made up of 3 modules, input module 6, one-chip computer module 7, PWM output module 8, described input module 6 serves isolating exterior circuit and the effect of nursing one's health input signal, prevent external input signal from damaging single-chip microcomputer, one-chip computer module 7 uses PIC single chip microcomputer dspic30f5013, there is input detection module this single-chip microcomputer inside, pulsewidth and the frequency of the PWM of outside input can be detected, PWM output module is outputted to after computing, the pwm signal exported is 0-25%, the signal of PWM output module to single-chip microcomputer outputs to peak value radio-frequency module after nursing one's health, the control method of described control module is as described below, single-chip microcomputer passes through an inner input capture module after receiving outside PWM, capture the time value of timer during rising edge and the trailing edge of PWM, frequency and the duty ratio of PWM is gone out again by the Time Calculation between rising edge and trailing edge, then gone out the value of the PWM needed for power by formulae discovery according to calculated value, PWM value required for output comparison module again through single-chip microcomputer inside exports is to described PWM output module 8, described peak value radio-frequency module 4 is power amplification effect, in order to reach short pulse high power, peak value radio-frequency module 4 peak power is 3 times of average power or more, power supply can be allowed within the time faster to reach average power content.Under same laser resonant cavity machining area, improve radio-frequency power supply power, make laserresonator ability just to be made to inject in injecting power duty ratio 25% saturated, namely laser gain is saturated.Peak value radio-frequency module 4 is made up of three parts, the micro-band distribution plate 9 of prime, power amplification plate 10, high-peak power hard board 11, the micro-band distribution plate 9 of described prime, play the effect distributing power signal, cover copper cash by some micro-bands and signal averaging is assigned to each power amplification plate 10, power amplification plate 10, comprise input signal impedance matching circuit, radiofrequency signal outputs to by transistor Q1 after input signal impedance matching circuit, the LDMOS amplifier that Q2 is formed, radiofrequency signal outputs to impedance transformer after amplifying, two paths of signals after impedance transformation is outputted to non-equilibrium equilibrium conversion device T4, two-way non-equilibrium signal exports after being converted to a road signal.High-peak power hard board 11, be made up of some air microstrip lines, the polytetrafluoroethylene pcb board that the dielectric constant often that common micro-band synthetic thread uses is higher, and peak power of the present invention is higher, if will generate heat or puncture with common polyfluortetraethylene plate, therefore we have employed air microstrip line, and the method can reduce the wastage, and reduce heat.Air microstrip line is made up of 3 parts, Copper Foil 12, fixed leg 13, PCB earthed surface 14, belonging to Copper Foil to be that the red copper of the wide 12 ~ 16mm of thick 0.3 ~ 0.8mm. is gold-plated form, total length is 550 ~ 580mm, between Copper Foil and PCB earthed surface 14, spacing is 4.6 ~ 4.9mm, Copper Foil two ends are fixed on fixed leg, screwed hole is had for fixing onboard under fixed leg, the superiors plate copper sheet, copper sheet surface gold-plating needs only to need the soldering of micro-band Copper Foil to receive on fixed leg when fixing micro-band Copper Foil, and be unsettled discontiguous and the dielectric constant of air is 1 between Copper Foil and PCB earthed surface 14, in conjunction with the thickness of Copper Foil, width and length just can play the effect of power combing.
Fig. 1 is system connection diagram of the present invention, laser 1 and radio-frequency power supply 2, the effect of laser 1 is that the radio-frequency (RF) energy of input is converted into luminous energy, the effect of radio-frequency power supply 2 is power current, radio-frequency current is transformed into supply laser through frequency translation, play the effect of a pumping, described radio-frequency power supply has an important parameter to be exactly pulse power to be three times of average power, thus can allow laser within the very short cycle, produce very high light peak power.
Fig. 2 is internal system module diagram of the present invention, and by control module 3, peak value radio-frequency module 4, laser tube 1 forms.Control module receives external control pwm signal, and after computing, output pwm signal is to peak value radio-frequency module, and radio-frequency (RF) energy is sent to laser tube after signal is amplified by described peak value radio-frequency module.
Fig. 3 is the inner connection layout of control module of the present invention, described control module is made up of 3 modules, input module 6, one-chip computer module 7, PWM output module 8, described input module 6 serves isolating exterior circuit and the effect of nursing one's health input signal, prevent external input signal from damaging single-chip microcomputer, one-chip computer module 7 uses PIC single chip microcomputer dspic30f5013, there is input detection module this single-chip microcomputer inside, pulsewidth and the frequency of the PWM of outside input can be detected, PWM output module 8 is outputted to after computing, the pwm signal exported is 0-50%, the signal that PWM output module plays single-chip microcomputer carries out the effect of nursing one's health.
Fig. 4 is peak value radio-frequency module connection layout of the present invention, peak value radio-frequency module 4 is made up of three parts, the micro-band distribution plate 9 of prime, power amplification plate 10, high-peak power hard board 11, the micro-band distribution plate 9 of described prime, plays the effect distributing power signal, covers copper cash signal averaging is assigned to each power amplification plate 10 by some micro-bands.Described power amplification plate 10, comprise input signal impedance matching circuit, radiofrequency signal outputs to the LDMOS amplifier be made up of transistor Q1, Q2 after input signal impedance matching circuit, radiofrequency signal outputs to impedance transformer after amplifying, two paths of signals after impedance transformation is outputted to non-equilibrium equilibrium conversion device T4, two-way non-equilibrium signal exports after being converted to a road signal.High-peak power hard board 11, be made up of some air microstrip lines, the polytetrafluoroethylene pcb board that the dielectric constant often that common micro-band synthetic thread uses is higher, and peak power of the present invention is higher, if will generate heat or puncture with common polyfluortetraethylene plate, therefore we have employed air microstrip line, and the method can reduce the wastage, and reduce heat.
The rectilinear of Fig. 5 to be the PWM of an example of the present invention and power relation figure, figure be duty ratio and power, when 12.5%, power reaches 350 watts.
Fig. 6 is air microstrip line structural representation of the present invention, air microstrip line is made up of 3 parts, Copper Foil 12, fixed leg 13, PCB earthed surface 14, belonging to Copper Foil to be that the red copper of the wide 12 ~ 16mm of thick 0.3 ~ 0.8mm is gold-plated form, total length is 550 ~ 580mm, between Copper Foil and PCB earthed surface 14, spacing is 4.6 ~ 4.9mm, Copper Foil two ends are fixed on fixed leg, and be unsettled discontiguous and the dielectric constant of air is 1 between Copper Foil and PCB earthed surface 14, in conjunction with the thickness of Copper Foil, width and length just can play the effect of power combing.
Claims (4)
1. the radio frequency CO2 laser for cutting, is characterized in that: the pulse power of radio frequency CO2 laser is at least three times of average power, makes radio-frequency power supply operative duty cycles just can reach maximum average power within 25%; Described radio frequency CO2 laser comprises laser 1 and radio-frequency power supply 2; Wherein, radio-frequency power supply 2 comprises control module 3, peak value radio-frequency module 4; Peak value radio-frequency module 4 by the micro-band distribution plate 9 of prime, power amplification plate 10, high-peak power hard board 11 forms; High-peak power hard board 11 is made up of some air microstrip lines.
2. the radio frequency CO2 laser for cutting as claimed in claim 1, wherein air microstrip line is made up of Copper Foil 12, fixed leg 13, PCB earthed surface 14.
3. the radio frequency CO2 laser for cutting as claimed in claim 1, belonging to Copper Foil to be that the red copper of the wide 12 ~ 16mm of thick 0.3 ~ 0.8mm is gold-plated form, total length is 550 ~ 580mm, between Copper Foil and PCB earthed surface 14, spacing is 4.6 ~ 4.9mm, on the fixed leg that Copper Foil two ends are fixed on, and be unsettled discontiguous between Copper Foil and PCB earthed surface 14, and the dielectric constant of air is 1, in conjunction with the thickness of Copper Foil, width and length just can play the effect of power combing.
4. the control method of radio frequency CO2 laser for cutting, is characterized in that: the pulse power controlling radio frequency CO2 laser reaches at least three times of average power, makes radio-frequency power supply operative duty cycles just can reach maximum average power within 25%; Wherein, the control module 3 of CO2 laser comprises input module 6, one-chip computer module 7, PWM output module 8; One-chip computer module 7 passes through an inner input capture module after receiving outside PWM, capture the time value of timer during rising edge and the trailing edge of PWM, frequency and the duty ratio of PWM is gone out again by the Time Calculation between rising edge and trailing edge, then calculate the value of the PWM needed for power according to calculated value, then the PWM value required for the output of output comparison module through single-chip microcomputer inside is to described PWM output module 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511010926.XA CN105514780A (en) | 2015-12-31 | 2015-12-31 | Laser for cutting leather and control method for realizing leather cutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511010926.XA CN105514780A (en) | 2015-12-31 | 2015-12-31 | Laser for cutting leather and control method for realizing leather cutting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105514780A true CN105514780A (en) | 2016-04-20 |
Family
ID=55722552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511010926.XA Pending CN105514780A (en) | 2015-12-31 | 2015-12-31 | Laser for cutting leather and control method for realizing leather cutting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105514780A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846301A (en) * | 2016-06-04 | 2016-08-10 | 清华大学深圳研究生院 | High-power and small-volume radio-frequency power supply |
| WO2017113043A1 (en) * | 2015-12-31 | 2017-07-06 | 徐海军 | Laser for leather cutting and control method therefor |
| CN118472778A (en) * | 2024-07-15 | 2024-08-09 | 南京晨锐腾晶激光科技有限公司 | Beam feedback control method and system of radio frequency carbon dioxide laser |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1250960A (en) * | 1999-10-14 | 2000-04-19 | 中国科学院上海光学精密机械研究所 | Discharge system of pulse carbon dioxide laser |
| CN1976142A (en) * | 2006-11-29 | 2007-06-06 | 江苏新潮科技集团有限公司 | Starting and stable discharging method for pulse radio-frequency panel CO2 laser |
| WO2007081369A3 (en) * | 2005-03-28 | 2009-04-23 | Videojet Technologies Inc | Laser power supply |
| CN205752967U (en) * | 2015-12-31 | 2016-11-30 | 北京热刺激光技术有限责任公司 | A kind of radio frequency CO2 laser instrument for leather cutting |
-
2015
- 2015-12-31 CN CN201511010926.XA patent/CN105514780A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1250960A (en) * | 1999-10-14 | 2000-04-19 | 中国科学院上海光学精密机械研究所 | Discharge system of pulse carbon dioxide laser |
| WO2007081369A3 (en) * | 2005-03-28 | 2009-04-23 | Videojet Technologies Inc | Laser power supply |
| CN1976142A (en) * | 2006-11-29 | 2007-06-06 | 江苏新潮科技集团有限公司 | Starting and stable discharging method for pulse radio-frequency panel CO2 laser |
| CN205752967U (en) * | 2015-12-31 | 2016-11-30 | 北京热刺激光技术有限责任公司 | A kind of radio frequency CO2 laser instrument for leather cutting |
Non-Patent Citations (1)
| Title |
|---|
| 李文芳: ""大功率晶体管射频激光电源的研究"", 《中国优秀硕士学位论文全文数据库（信息科技辑）》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017113043A1 (en) * | 2015-12-31 | 2017-07-06 | 徐海军 | Laser for leather cutting and control method therefor |
| CN105846301A (en) * | 2016-06-04 | 2016-08-10 | 清华大学深圳研究生院 | High-power and small-volume radio-frequency power supply |
| CN105846301B (en) * | 2016-06-04 | 2018-08-14 | 清华大学深圳研究生院 | A kind of high-power small size radio-frequency power supply |
| CN118472778A (en) * | 2024-07-15 | 2024-08-09 | 南京晨锐腾晶激光科技有限公司 | Beam feedback control method and system of radio frequency carbon dioxide laser |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3607840B1 (en) | Circuit for ultrasonic electronic cigarette and ultrasonic electronic cigarette | |
| CN105514780A (en) | Laser for cutting leather and control method for realizing leather cutting | |
| CN102255606B (en) | Solid-state radio frequency power supply based on E-type power amplifying circuit | |
| WO2007104055A3 (en) | High efficiency load insensitive power amplifier | |
| US20090310709A1 (en) | Amplitude modulated pulse transmitter | |
| CN205752967U (en) | A kind of radio frequency CO2 laser instrument for leather cutting | |
| ATE508530T1 (en) | HIGH EFFICIENCY COMBINED MULTIPATH POWER AMPLIFIER | |
| CN103762948B (en) | A kind of CMOS radio-frequency power amplifier being integrated in SOC(system on a chip) | |
| JP6329721B2 (en) | Laser apparatus and optical amplification method | |
| CN108092635A (en) | A kind of Ku wave bands solid-state power amplifier | |
| CN103151698B (en) | Time-domain doublet pulse pumping method for restraining parasitic oscillation of Ti sapphire multipass amplifier | |
| WO2017113043A1 (en) | Laser for leather cutting and control method therefor | |
| CN103205353A (en) | Magnetic processor and application thereof for age-acceleration of liquid food | |
| CN102244365A (en) | Laser modulation circuit of continuous wave with frequency modulation | |
| Andersson et al. | A 0.85–2.7 GHz two-cell distributed GaN power amplifier designed for high efficiency at 1-dB compression | |
| Ikeda et al. | 2.4 GHz-band high power and high efficiency solid-state injection-locked oscillator using imbalanced coupling resonator in feedback circuit | |
| CN203590160U (en) | Acousto-optic Q switch driver | |
| CN203596800U (en) | Radio frequency power amplifier system and lighting device | |
| CN105449503B (en) | Radio frequency power supply for laser | |
| CN204886886U (en) | RF power amplifying modular | |
| CN104852277A (en) | Drive circuit used for laser module, and laser projector with drive circuit | |
| CN203840290U (en) | Multi-pulse modulation microwave high-power amplifier | |
| Park et al. | Analysis and optimization of asymmetric sequential power amplifier | |
| RU140731U1 (en) | PULSE THREE-Cascade Microwave Power Amplifier | |
| CN204012176U (en) | Passive Q-adjusted single longitudinal mode laser |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160420 |
|
| WD01 | Invention patent application deemed withdrawn after publication |