CN107508138A - A kind of high-speed switch pulse laser - Google Patents
A kind of high-speed switch pulse laser Download PDFInfo
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- CN107508138A CN107508138A CN201710962929.6A CN201710962929A CN107508138A CN 107508138 A CN107508138 A CN 107508138A CN 201710962929 A CN201710962929 A CN 201710962929A CN 107508138 A CN107508138 A CN 107508138A
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- laser
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- speed switch
- pulse
- pulse laser
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- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 230000003287 optical effect Effects 0.000 claims description 4
- 210000001367 artery Anatomy 0.000 claims description 2
- 239000004065 semiconductor Substances 0.000 claims description 2
- 210000003462 vein Anatomy 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 101100456571 Mus musculus Med12 gene Proteins 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000010355 oscillation Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005459 micromachining Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000002314 autoradiolysis reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
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
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
- H01S3/1123—Q-switching
- H01S3/117—Q-switching using intracavity acousto-optic devices
-
- 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
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
- Lasers (AREA)
Abstract
The invention discloses a kind of high-speed switch pulse laser, the pulse laser includes master oscillator power amplifier, the master oscillator power amplifier includes switch controller, the laser seed source being connected with each other, also include being arranged at the laser amplifier component and output mechanism after the laser seed source, the switch controller includes gate signal control unit.Seed source is exported using the switch controller with gate signal control unit into horizontal pulse and the modulation of continuous output switching, a kind of master oscillator power amplifier (MOPA) structure is obtained, so that obtained pulse laser switching speed is fast, and it is lost without additional laser, phototranstormation efficiency is high, the laser harmonic that is particularly suitable for use in output.
Description
Technical field
The invention belongs to pulsed laser technique field, is related to a kind of pulse laser, relates in particular to one kind and can be used for
Micro-machined high-speed switch pulse laser.
Background technology
Laser Processing is to reach very high energy density in focus after lens focus using the energy of light, so as to produce
Heat effect carries out material processing, and the technology has high efficiency, high accuracy, noncontact procession, the deformation of Materials Inorganic tool
The advantages of, simultaneously because partial operation, does not influence on non-laser irradiated site, laser beam is easy to be oriented to, focused on, realization side
To conversion, easily coordinate with digital control system, complex part can be processed, be a kind of extremely flexible processing method.The party
Method is obtained for extensive use in industry, scientific research field, and wide prospect is opened for high-quality, efficient, environmentally friendly process technology.
With the continuous development of industrial technology, quality and processing efficiency to Laser Processing are proposed higher requirement,
For the processing tasks that some in Laser Micro-Machining field require more harsh, common lasers are difficult to complete, but arteries and veins
Impulse light (nanosecond, psec, femtosecond) can be widely used in because with more preferable monochromaticjty, divergence is minimum, power is higher
It is required that harsh work pieces process, at the same with to the size of micro-nano technology, precision, efficiency requirement continuous improvement, accordingly
Requirements at the higher level it is also proposed to the switch time of pulse laser.
Traditional pulse laser modulation system mainly includes pump modulation, acousto-optic modulation (AOM) technology, and wherein pumping is adjusted
System is a kind of mode to the direct modulation of pump light, and this mode is direct, device structure is simple, and light loss is small, but due to it
Response time is longer, causes switching speed slow, typically need to be up to tens microseconds.Therefore, pump-coupling modulation technique can not typically expire
The requirement of sufficient Laser Micro-Machining.Acousto-optic modulation technology (AOM) is a kind of external modulation technology, AOM is passed through in laser output, by gating
(Gate) it is 1 grade of light (light extraction) or 0 grade of light (block, not light extraction) that signal, which provides low and high level and controlled by AOM, sharp so as to realize
The high-speed switch of light device, acousto-optic modulation have the advantages of switch time short (10-100ns), but light conversion be present in its 1 grade output
The problem of efficiency is low, usually 80% or so, so as to cause about 20% laser to export loss.
The content of the invention
Therefore, the technical problems to be solved by the invention are that traditional pulse laser has switching speed slowly or switch is fast
The technical problem that degree and phototranstormation efficiency can not ensure simultaneously, so as to propose a kind of to switch small quick of rapid, laser loss and open
Close pulse laser.
In order to solve the above technical problems, the technical scheme is that：
The present invention provides a kind of high-speed switch pulse laser, and the laser includes master oscillator power amplifier, described
Master oscillator power amplifier includes switch controller, the laser seed source being connected with each other, in addition to is arranged at the laser seed
Laser amplifier component and output mechanism after source.
Preferably, the switch controller includes gate signal control unit, described in the gate signal control unit control
Laser seed source exports pulse laser when gate signal is high level, and the gate signal control unit controls the laser seed source
Continuous laser is exported when gate signal is low level.
Preferably, the laser amplifier component includes the preamplifier and main amplifier being sequentially connected with, it is described preposition
Amplifier is connected with the laser seed source or switch controller, and the main amplifier is connected with the output mechanism.
Preferably, the laser seed source is optics for continuous and impulsive switched laser seed source, the output mechanism
Harmonic wave system.
Preferably, the continuous and impulsive switched laser seed source is semiconductor laser.
Preferably, the laser seed source is laser pulse seed source.
Preferably, single-mode laser and coupler that the switch controller also includes acousto-optic modulator, continuously exported,
The coupler is connected with the single-mode laser continuously exported, acousto-optic modulator, the acousto-optic modulator and the pulse
Seed source connects.
Preferably, the laser pulse seed source is femtosecond oscillator, psec oscillator or that directly modulates shake nanosecond
Swing device.
Preferably, the output mechanism is double-tone spectroscope.
The above-mentioned technical proposal of the present invention has advantages below compared with prior art：
(1) high-speed switch pulse laser of the present invention, the laser includes master oscillator power amplifier, described
Master oscillator power amplifier includes switch controller, the laser seed source being connected with each other, in addition to is arranged at the switching control
Laser amplifier component and output mechanism after device or laser seed source, the switch controller include gate signal control unit.
Seed source output is controlled using the switch controller with gate signal control unit, a kind of main oscillations power has been obtained and has put
Big device (MOPA) structure so that obtained pulse laser switching speed is fast, and up to submicrosecond, and laser loss is almost nil,
Phototranstormation efficiency is high, and modulated process is to laser without damage.
(2) high-speed switch pulse laser of the present invention, the door control unit control the laser seed source in door
Signal exports pulse laser when being high level, the door control unit controls seed source company of output when gate signal is low level
Continuous laser.The laser realizes the control to seed source output especially by gate signal, so that the switch speed of pulse laser
Degree is fast, and laser loss late is low, in addition, gate signal be switched to by high level it is low level during, due to the presence of continuous light
Be not in the situation of no seed source, avoid because amplification autoradiolysis (ASE) is too strong and cause Q-switch (Q-switch) to be locked
Mould or first pulse are too strong so as to damage laser, extend the service life of laser.For the field using solid amplifier
Close, influence caused by thermal lens difference can also be avoided.
Brief description of the drawings
In order that present disclosure is more likely to be clearly understood, specific embodiment and combination below according to the present invention
Accompanying drawing, the present invention is further detailed explanation, wherein
Fig. 1 is the structural representation of the master oscillator power amplifier described in the embodiment of the present invention 1；
Fig. 2 is the structural representation of the master oscillator power amplifier described in the embodiment of the present invention 2；
Fig. 3 is the debugging oscillogram of the master oscillator power amplifier described in the embodiment of the present invention 2；
Fig. 4 is the structural representation of the master oscillator power amplifier described in the embodiment of the present invention 3.
Reference is expressed as in figure：1- switch controllers；10- gate signal control units；11- acousto-optic modulators；12- connects
The single-mode laser of continuous output；13- couplers；2- laser seeds source；3- output mechanisms；4- preamplifiers；5- main amplifiers.
Embodiment
Embodiment 1
The present embodiment provides a kind of high-speed switch pulse laser, as shown in figure 1, the pulse laser includes main oscillations
Power amplifier (power amplifier of master oscillator, MOPA), the master oscillator power amplifier include the switching being sequentially connected with
Controller 1, laser seed source 2, laser amplifier component and output mechanism 3, wherein, the switch controller includes gate signal
(Gate signals) control unit, when producing high level gate signal, control laser seed source 2 exports the gate signal control unit
Pulse laser, continuously swash on the contrary, gate signal control unit controls the laser seed source 2 to export when producing low level signal
Light.The laser seed source 2 is continuous and pulse laser seeds source or laser high-frequency impulse seed source.
The present embodiment realizes that the control to seed source output is shaken to realize to pulse laser master by using Gate signals
Power amplifier (MOPA) structure of device is swung, so as to obtain a kind of switching speed soon (submicrosecond), laser zero is lost quick
Switched pulse laser device.Meanwhile Gate signals from high level into low level handoff procedure, because the presence of continuous light will not
There is the situation of no seed source, may cause Q-switch (Q- so as to avoid the occurrence of because amplified spontaneous emission (ASE) is too strong
Switch) locked mode is so as to damaging laser.
Further, the laser amplifier component includes the preamplifier 4 and main amplifier 5 being sequentially connected with, and the two is equal
For conventional laser amplifier, the preamplifier 4 is connected with laser seed source 2, and the main amplifier connects with 5 output mechanisms 3
Connect, the output mechanism 3 can be optical harmonic output system or light splitting output system.The preamplifier 4 can be one-level
Or the casacade multi-amplifier being sequentially arranged.
Embodiment 2
The present embodiment provides a kind of high-speed switch pulse laser, as shown in Fig. 2 the pulse laser includes main oscillations
Power amplifier (power amplifier of master oscillator, MOPA), the master oscillator power amplifier include the switching being sequentially connected with
Controller 1, laser seed source 2, laser amplifier component and output mechanism 3, wherein, the switch controller includes gate signal
(Gate signals) control unit.
In the present embodiment, the laser seed source 2 is continuous and impulsive switched laser seed source, and the gate signal control is single
Member is optical harmonic output system for continuous and pulse converter, the output mechanism 3 so that the high-speed switch pulse laser
Device is harmonic laser, and specifically, the continuous and impulsive switched laser seed source is that can directly carry out pulse modulated half
Conductor laser.
Further, the laser amplifier component includes the preamplifier 4 and main amplifier 5 being sequentially connected with, before described
Amplifier 4 to be put to be connected with laser seed source 2, the main amplifier is connected with 5 with output mechanism 3, in the present embodiment, main amplifier
Infrared (IR) signal of 5 outputs exports after transmitting to harmonic wave system.The preamplifier 4 can be one-level or sequentially
The casacade multi-amplifier of setting, the regulation oscillogram of the harmonic laser are as shown in Figure 3.
Further, harmonic conversion system is passed through in laser output of the laser after described laser amplifier component amplification,
Pulse laser in Gate high level is stronger so as to export because peak power height can realize efficient harmonic conversion
Laser harmonic；And the continuous laser when Gate is low level is because its low harmonic generation efficiency of peak power is also corresponding very low,
The laser harmonic that it is exported is weaker, and Laser Processing will not be impacted.
Embodiment 3
The present embodiment provides a kind of high-speed switch pulse laser, as shown in figure 4, the pulse laser includes main oscillations
Power amplifier (power amplifier of master oscillator, MOPA), the master oscillator power amplifier include the laser being sequentially connected with
Seed source 2, switch controller 1, laser amplifier component and output mechanism 3, wherein, the switch controller includes gate signal
(Gate signals) control unit.
In the present embodiment, the laser seed source 2 is laser pulse seed source, and the output mechanism 3 is double-tone spectroscope,
So that the high-speed switch pulse laser is fundamental frequency/IR lasers.The switch controller 1 removes gate signal control unit 10
Outside, in addition to including acousto-optic modulator (AOM) 11, the single-mode laser 12 and coupler 13 that continuously export, the gate signal control
Unit 10 processed is connected with acousto-optic modulator 11 and the single-mode laser continuously exported 12, to the He of single-mode laser 12 continuously exported
Acousto-optic modulator 11 sends control signal, plays a part of signal control, the coupler 13 and the continuous output to the two
Single-mode laser 12, acousto-optic modulator (AOM) 11 connect, the acousto-optic modulator 11 is connected with the pulse seed source 2.Institute
State coupler 13 while be also connected with laser amplifier component, the laser amplifier component includes the preamplifier 4 being sequentially connected with
With main amplifier 5, the preamplifier 4 is connected with the coupler 13, and the main amplifier 5 is connected with output mechanism 3, institute
It can be one-level or the casacade multi-amplifier being sequentially arranged to state preamplifier 4, and the output mechanism 3 is double-tone spectroscope.
Specifically, the laser pulse seed source is femtosecond oscillator, psec oscillator or the nanosecond vibration directly modulated
Any of device.
Further, when Gate signals control the single-mode laser 12 of continuous output (CW) to export and acousto-optic modulator respectively
(AOM) 11 output：When Gate signals are high level, pulse laser is exported by AOM, CW single-mode lasers not light extraction；When
When Gate signals are low level, pulse laser is blocked by AOM and continuous (CW) laser is exported by coupler.It is defeated from coupler 13
The pulse that goes out and the flashlight that continuously switches after preamplifier 4, main amplifier 5 again by exporting high power laser.Amplifier
Laser output passes through double-tone spectroscope separately continuous (CW) laser and pulse laser.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (9)
1. a kind of high-speed switch pulse laser, it is characterised in that the laser includes master oscillator power amplifier, the master
Hunting power amplifier includes switch controller, the laser seed source being connected with each other, in addition to is arranged at the laser seed source
Laser amplifier component and output mechanism afterwards.
2. high-speed switch pulse laser according to claim 1, it is characterised in that the switch controller is believed including door
Number control unit, the gate signal control unit control the laser seed source to export pulse when gate signal is high level to swash
Light, the gate signal control unit control the laser seed source to export continuous laser when gate signal is low level.
3. high-speed switch pulse laser according to claim 1 or 2, it is characterised in that the laser amplifier component bag
The preamplifier and main amplifier being sequentially connected with are included, the preamplifier is connected with the laser seed source, and the master is put
Big device is connected with the output mechanism.
4. high-speed switch pulse laser according to claim 3, it is characterised in that the laser seed source to be continuous and
Impulsive switched laser seed source, the output mechanism are optical harmonic output system.
5. high-speed switch pulse laser according to claim 4, it is characterised in that the continuous and impulsive switched laser
Seed source is semiconductor laser.
6. high-speed switch pulse laser according to claim 3, it is characterised in that the laser seed source is laser arteries and veins
Rush seed source.
7. high-speed switch pulse laser according to claim 6, it is characterised in that the switch controller also includes sound
Optical modulator, the single-mode laser continuously exported and coupler, the coupler and the laser amplifier component, continuously export
Single-mode laser, acousto-optic modulator connection, the acousto-optic modulator are connected with the pulse seed source.
8. high-speed switch pulse laser according to claim 7, it is characterised in that the laser pulse seed source is winged
Second oscillator, psec oscillator or the nanosecond oscillator directly modulated.
9. according to the high-speed switch pulse laser described in claim any one of 6-8, it is characterised in that the output mechanism is
Double-tone spectroscope.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710962929.6A CN107508138A (en) | 2017-10-16 | 2017-10-16 | A kind of high-speed switch pulse laser |
| PCT/CN2018/077825 WO2019075983A1 (en) | 2017-10-16 | 2018-03-02 | Fast on/off pulse laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710962929.6A CN107508138A (en) | 2017-10-16 | 2017-10-16 | A kind of high-speed switch pulse laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107508138A true CN107508138A (en) | 2017-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710962929.6A Pending CN107508138A (en) | 2017-10-16 | 2017-10-16 | A kind of high-speed switch pulse laser |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107508138A (en) |
| WO (1) | WO2019075983A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019075983A1 (en) * | 2017-10-16 | 2019-04-25 | 英诺激光科技股份有限公司 | Fast on/off pulse laser |
| CN112703645A (en) * | 2018-06-18 | 2021-04-23 | 相干公司 | laser-MOPA with burst mode control |
| CN115533345A (en) * | 2022-11-24 | 2022-12-30 | 济南邦德激光股份有限公司 | Laser cutting system |
| CN115621831A (en) * | 2022-12-02 | 2023-01-17 | 北京盛镭科技有限公司 | Control method and system for dynamically adjusting number of BURST pulses |
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| US20090185588A1 (en) * | 2008-01-16 | 2009-07-23 | Deep Photonics Corporation | Method and apparatus for producing arbitrary pulsetrains from a harmonic fiber laser |
| CN101499607A (en) * | 2009-03-13 | 2009-08-05 | 深圳市明鑫科技发展有限公司 | Single frequency pulse/continuous dual output optical fiber laser |
| KR101176447B1 (en) * | 2011-04-28 | 2012-08-30 | 광주과학기술원 | Pulse laser system with flexible burst mode operation and method of flexible burst mode operation |
| JP2013102088A (en) * | 2011-11-09 | 2013-05-23 | Fujikura Ltd | Mopa system laser light source device and mopa system laser control method |
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| US8717670B2 (en) * | 2011-06-17 | 2014-05-06 | Coherent, Inc. | Fiber-MOPA apparatus for delivering pulses on demand |
| CN107508138A (en) * | 2017-10-16 | 2017-12-22 | 英诺激光科技股份有限公司 | A kind of high-speed switch pulse laser |
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2017
- 2017-10-16 CN CN201710962929.6A patent/CN107508138A/en active Pending
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2018
- 2018-03-02 WO PCT/CN2018/077825 patent/WO2019075983A1/en active Application Filing
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| US20090185588A1 (en) * | 2008-01-16 | 2009-07-23 | Deep Photonics Corporation | Method and apparatus for producing arbitrary pulsetrains from a harmonic fiber laser |
| CN101499607A (en) * | 2009-03-13 | 2009-08-05 | 深圳市明鑫科技发展有限公司 | Single frequency pulse/continuous dual output optical fiber laser |
| KR101176447B1 (en) * | 2011-04-28 | 2012-08-30 | 광주과학기술원 | Pulse laser system with flexible burst mode operation and method of flexible burst mode operation |
| JP2013102088A (en) * | 2011-11-09 | 2013-05-23 | Fujikura Ltd | Mopa system laser light source device and mopa system laser control method |
| JP2013197549A (en) * | 2012-03-22 | 2013-09-30 | Toshiba Corp | Fiber laser device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019075983A1 (en) * | 2017-10-16 | 2019-04-25 | 英诺激光科技股份有限公司 | Fast on/off pulse laser |
| CN112703645A (en) * | 2018-06-18 | 2021-04-23 | 相干公司 | laser-MOPA with burst mode control |
| CN115533345A (en) * | 2022-11-24 | 2022-12-30 | 济南邦德激光股份有限公司 | Laser cutting system |
| CN115533345B (en) * | 2022-11-24 | 2023-03-28 | 济南邦德激光股份有限公司 | Laser cutting system |
| CN115621831A (en) * | 2022-12-02 | 2023-01-17 | 北京盛镭科技有限公司 | Control method and system for dynamically adjusting number of BURST pulses |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019075983A1 (en) | 2019-04-25 |
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