CN202212693U - Laser welding equipment - Google Patents
Laser welding equipment Download PDFInfo
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- CN202212693U CN202212693U CN 201120009984 CN201120009984U CN202212693U CN 202212693 U CN202212693 U CN 202212693U CN 201120009984 CN201120009984 CN 201120009984 CN 201120009984 U CN201120009984 U CN 201120009984U CN 202212693 U CN202212693 U CN 202212693U
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- 238000003466 welding Methods 0.000 title claims description 33
- 239000013078 crystal Substances 0.000 claims description 49
- 230000003287 optical effect Effects 0.000 claims description 42
- 230000008878 coupling Effects 0.000 claims description 33
- 238000010168 coupling process Methods 0.000 claims description 33
- 238000005859 coupling reaction Methods 0.000 claims description 33
- 239000011248 coating agent Substances 0.000 claims description 26
- 238000000576 coating method Methods 0.000 claims description 26
- 238000005086 pumping Methods 0.000 claims description 13
- 238000007747 plating Methods 0.000 claims description 8
- 238000007598 dipping method Methods 0.000 claims description 4
- 229910019655 synthetic inorganic crystalline material Inorganic materials 0.000 description 42
- 229910052751 metal Inorganic materials 0.000 description 16
- 239000002184 metal Substances 0.000 description 16
- 238000010586 diagram Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 8
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 241000931526 Acer campestre Species 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 230000003321 amplification Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- JNDMLEXHDPKVFC-UHFFFAOYSA-N aluminum;oxygen(2-);yttrium(3+) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Y+3] JNDMLEXHDPKVFC-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000001704 evaporation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
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- 229910019901 yttrium aluminum garnet Inorganic materials 0.000 description 1
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Abstract
The utility model discloses laser welding equipment, which comprises a fundamental resonance cavity, a harmonic resonance cavity, a control unit and a coupling device. The fundamental resonance cavity is used for generating a first laser with a variable pulse width and a fundamental wavelength, the harmonic resonance cavity is used for generating a second laser with a variable pulse width and a harmonic wavelength, the control unit is used for controlling respective laser power supplies of the fundamental resonance cavity and the harmonic resonance cavity and further controlling laser emitting sequences of the cavities so that emission of the second laser is slightly earlier than that of the first laser, and the coupling device is used for coupling the first laser and the second laser so that the two lasers are focused on a workpiece to be welded through the same focusing lens. The laser welding equipment can be used for well welding metal and alloy with high reflectance.
Description
Technical field
The utility model relates to a kind of laser welding apparatus that utilizes the LASER BEAM WELDING metal, relates in particular to utilize two bundle different wavelength of laser bundles to weld the laser welding apparatus of the metal or alloy with high reflectance.
Background technology
In recent years, laser has been widely used in commercial production, in particular for the aspects such as welding, cutting, punching, mark and surface treatment of metal.Aborning, it is more and more important that laser welding technology is just becoming, this mainly be because the obtainable high accuracy of laser weld, high processing speed and to the workpiece generation than the low thermal stress and the automaticity that can reach.
The current the most widely used LASER Light Source of laser welding apparatus generally has two kinds.First kind is gas laser, i.e. carbon dioxide (CO
2) laser instrument, its optical maser wavelength is 10.6 microns.Second kind is solid state laser, i.e. Nd:YAG (Nd:Y
3Al
5O
12, neodymium-doped yttrium-aluminum garnet) and laser instrument, its optical maser wavelength is 1.064 microns.The working media of Nd:YAG laser instrument is the YAG crystal bar of a small amount of rare earth element nd of doping (neodymium).The Nd:YAG laser instrument can continuous oscillation, also can utilize Q-switch to produce the giant-pulse vibration, and also can produce pulse width is the long pulse of 100 microseconds above (being generally 1～10 millisecond).
In laser weld was used, the optical coupled characteristic of laser beam and material to be welded was considerable.If the optical coupled characteristic is bad, material is high to the reflectivity of this optical maser wavelength, and then material is low to the absorption efficiency of this laser, and then is difficult to obtain a good welding effect.A general rule is arranged, and to commaterial, Wavelength of Laser is long more, and the absorption coefficient of material for laser light is low more; Optical maser wavelength is short more, and the absorption coefficient of material for laser light is high more.The laser of carbon dioxide laser maybe not can with such as metal such as titanium, steel and alloy coupling or be absorbed effectively, at room temperature possibly reflected significantly by these metal or alloy.Similarly, the Nd:YAG laser instrument is usually used in (less than 500 watts) under the low-energy state, at room temperature, and such metal such as soldering copper, gold, aluminium or absorbed effectively well by it.
Current laser instrument welding equipment generally uses the laser beam of single wavelength, at room temperature through increasing peak-power of laser pulse to overcome the initial resistance of metal pair coupling, compensates its bad absorbent properties.The temperature of metal is high more, and is high more to the absorption efficiency of laser; That is, when metal reaches its fusion temperature, absorb and to improve significantly.Yet, before reaching fusion temperature, use a high energy pulse possibly cause quite low efficient, because just can not absorb the live part of laser beam in the incipient stage of pulse; There is not effective absorption efficiency to talk about the quality of welding result with regard to nonsensical.In addition, in case the coupling of laser pulse and material, this very high peak power may apply too much, thereby causes material to splash (radiation of deposite metal is dripped) or cause metal and the unnecessary evaporation of alloying component.This poor efficiency of not expecting may cause the process and poor welding structure with splashing.
The utility model content
The problem that has the metal or alloy existence of high reflectance to welding; The purpose of the utility model is to provide a kind of laser welding apparatus; This laser welding apparatus regular hour of staggering is poor; The harmonic wave (wavelength is 532 nanometers) that priority superposes Nd:YAG first-harmonic (wavelength is 1.064 microns) and Nd:YAG first-harmonic can weld metal and alloy with high reflectance well, thereby enhance productivity and quality.
In order to achieve the above object, the utility model is realized by following technical scheme.
A kind of laser welding apparatus comprises the first-harmonic resonance chamber, is used to produce the first bundle laser of the fundamental wavelength of pulse width variability; The harmonic resonance chamber is used to produce the second bundle laser of the harmonic wave of pulse width variability; Control module is used to control first-harmonic resonance chamber harmonic resonator Laser Power Devices separately, and then controls the bright dipping order between them, makes the second bundle laser restraint laser preferential emission a little than first; Coupling device, be used to the be coupled first bundle laser and the second bundle laser make this two bundles laser focus on the workpiece to be welded through identical condenser lens.
The utility model beneficial effect is, the Nd:YAG first-harmonic with have the high reflectance metal (such as, copper and gold) the optical coupled characteristic be bad; But the harmonic wave of Nd:YAG first-harmonic and copper are quite high with the optical coupled characteristic of gold.Utilize this two bundles laser to weld, harmonic ratio first-harmonic preferential emission regular hour lead is heated to workpiece to be processed near the fusing point of workpiece; Then, first-harmonic is focused on the workpiece to be processed again.Workpiece is heated to by harmonic wave near the fusing point, absorbs first-harmonic more easily, and the first-harmonic of therefore having avoided single use high energy is processed and problem that the material that brings splashes.Utilize the first-harmonic harmonic to weld, improved welding efficiency and welding quality widely.
Description of drawings
Fig. 1 is according to embodiment of the utility model, and coupling focuses on the simplified block diagram of the laser welding apparatus of two bundle different wave length laser
Fig. 2 is the simplified block diagram of Nd:YAG fundamental wave oscillator in the present embodiment
Fig. 3 is the simplified block diagram of Nd:YAG harmonic oscillator in the present embodiment
Fig. 4 utilizes control module to control the signal waveforms of Nd:YAG first-harmonic and Nd:YAG harmonic wave in the present embodiment
Fig. 5 is the simplified block diagram that comprises the coupling device of coupling optical and focusing optical in the present embodiment
Fig. 6 is to use non-achromatism condenser lens to focus on the simplified block diagram of Nd:YAG first-harmonic and Nd:YAG harmonic wave
Fig. 7 is to use the achromatism condenser lens to focus on the simplified block diagram of Nd:YAG first-harmonic and Nd:YAG harmonic wave
The specific embodiment
Below through concrete embodiment and combine accompanying drawing that the utility model is described in further detail, but should not limit the protection domain of the utility model with this.
Fig. 1 is according to embodiment of the utility model, and coupling focuses on the simplified block diagram of the laser welding apparatus of two bundle different wave length laser.This laser welding apparatus comprises: Nd:YAG first-harmonic resonance chamber 10 and Nd:YAG harmonic resonance chamber 12 are respectively applied for and produce the first-harmonic harmonic; The Laser Power Devices 16 of the Laser Power Devices 14 harmonic resonators in first-harmonic resonance chamber, respectively with first-harmonic resonance chamber 10 harmonic resonators 12 on the electric light pumping device be connected; Control module 18 is used to control the Laser Power Devices 16 of the Laser Power Devices 14 harmonic resonators in first-harmonic resonance chamber, and then controls the bright dipping order between them, makes harmonic wave laser shift to an earlier date regular hour amount preferential emission than fundamental wave of laser; Coupling device 20 is used to the first-harmonic harmonic that 10 harmonic resonators 12 emit from the first-harmonic resonance chamber that is coupled, focus at last be workpiece 1 to be processed with workpiece 2 on.
Here, Nd:YAG first-harmonic resonance chamber 10 all is a Long Pulse LASER with first-harmonic (wavelength the is 1.064 microns) harmonic (wavelength is 532 nanometers) that Nd:YAG harmonic resonance chamber 12 emits, and pulse width is variable.Direction after the first-harmonic harmonic emits from first-harmonic resonance chamber 10 harmonic resonators 12 is a coplane and parallel, and it is coaxial and homocentric being coupled on the condenser lens through coupling device 20.Workpiece to be processed can be metal or alloy such as titanium, steel, copper, gold, aluminium, and the laser welding apparatus than single wavelength more has superiority when having the high reflectance metal such as Jin Hetong but this laser welding apparatus is used to weld.
Fig. 2 is the simplified block diagram of Nd:YAG fundamental wave oscillator 10 in the present embodiment.This first-harmonic resonance chamber 10 comprises: Nd:YAG laser crystal bar 22, mirror 26 before mirror 24 resonant cavity behind the resonator, the Laser Power Devices 14 in electric light pumping device 28 and first-harmonic resonance chamber 10.Laser Power Devices 14 provide needed electric current for electric light pumping device 28.Electric light pumping device 28 like xenon lamp, is encouraged the back luminous by Laser Power Devices 14, then pumping Nd:YAG laser crystal bar 22.Laser crystal bar 22 absorbs the light radiation that emits from electric light pumping device 28; And after satisfying certain threshold condition; Laser photon radiates from the right ends of laser crystal bar 22; And behind resonator, come back reflective, vibration and amplification between the mirror 26 before mirror 24 resonant cavity, at last by the 26 coupling outputs of mirror before the resonator.The first-harmonic that Here it is emits in the first-harmonic resonance chamber.
Fig. 3 is the simplified block diagram of Nd:YAG harmonic oscillator 12 in the present embodiment.This harmonic resonance chamber 12 comprises: Nd:YAG laser crystal bar 34, the first resonator mirrors 30 and second resonator mirror 32, nonlinear optical crystal 36, harmonic wave outgoing mirror 38, the Laser Power Devices 16 of electric light pumping device 40 harmonic resonators 12.
First resonator mirror 30 is coated with the deielectric-coating to the high reflection of first-harmonic (1.064 microns) harmonic (532 nanometer) near a side 30a of laser crystal bar 34.Second resonator mirror 32 is coated with the high anti-deielectric-coating of first-harmonic (1.064 microns) harmonic (532 nanometer) near a side 32a of nonlinear optical crystal 36.Two end faces of laser crystal bar 34 all are coated with the deielectric-coating that the first-harmonic height is passed through, and place near first resonator mirror 30.Two end faces of nonlinear optical crystal 36 all are coated with the deielectric-coating that first-harmonic (1.064 microns) harmonic (532 nanometer) height is passed through, and place near second resonator mirror 32.First resonator mirror 30, laser crystal bar 34, nonlinear optical crystal 36 and second resonator mirror, 32 conllinear are placed.Harmonic wave outgoing mirror 38 is placed between laser crystal bar 34 and the nonlinear optical crystal 36.Harmonic wave outgoing mirror 38 is coated with the deielectric-coating to first-harmonic high thoroughly (incident angle is 45 degree) near a side 38a of laser crystal bar, and harmonic wave outgoing mirror 38 is coated with the deielectric-coating that reflects (incident angle is 45 degree) to first-harmonic high thoroughly (incident angle is 45 degree) with to humorous wave height near a side 38b of nonlinear optical crystal 36.The modes of emplacement of harmonic wave outgoing mirror must make the harmonic direction after the output parallel with horizontal plane.
Nonlinear optical crystal 36 is ktp crystal (KTiOPO
4) or lbo crystal (LiB
3O
5).Nonlinear optical effect takes place in nonlinear optical crystal 36 and first-harmonic coupling, and producing wavelength is the harmonic wave of 532 nanometers.Laser Power Devices 16 provide needed electric current for electric light pumping device 40.Electric light pumping device 40 like xenon lamp, is encouraged the back luminous by Laser Power Devices 16, then pumping Nd:YAG laser crystal bar 34.Laser crystal bar 34 absorbs the light radiation that emits from electric light pumping device 40; And after satisfying certain threshold condition; Laser photon radiates from the right ends of laser crystal bar 34, and between first resonator mirror 30 and second resonator mirror 32, comes back reflective, vibration and amplification.Nonlinear optical effect takes place in first-harmonic and nonlinear crystal 36 couplings to second resonator mirror 32 is propagated, and producing wavelength is the harmonic wave of 532 nanometers; First-harmonic and the harmonic wave after the generation doing to use up are reflected by second resonator mirror 32, propagate to nonlinear optical crystal 36 again.The first-harmonic of doing to use up is coupled with nonlinear optical crystal 36 once more, and nonlinear optical effect takes place, and producing wavelength is the harmonic wave of 532 nanometers.The harmonic optcial beam that successively produces is propagated to laser crystal bar 34 directions, arrive harmonic wave outgoing mirror 38 near nonlinear crystal 36 1 side 38b the time, turn to output from this resonator.And the first-harmonic of not doing to use up yet continues to propagate to laser crystal bar 34 through harmonic wave outgoing mirror 38, continues to participate in the vibration and the amplification process of first-harmonic.
The first-harmonic harmonic coplane that 10 harmonic resonators 12 emit from the first-harmonic resonance chamber and parallel.
This structured flowchart is a kind of sketch map of harmonic wave of the Nd:YAG of generation first-harmonic.Personnel with laser field knowledge still can change the structure of resonator and the plated film of some optical element, thereby obtain the harmonic wave of Nd:YAG first-harmonic.Such as, the cavity resonator structure of line style can become the cavity resonator structure of folded form, in line style resonator or folded form resonator, adds suitable polarizer (like, Brewster's angle polarizer), can obtain the harmonic wave of Nd:YAG first-harmonic easily.
In Fig. 1, disclosed the Laser Power Devices 16 that control module 18 is used to control the Laser Power Devices 14 harmonic resonators in first-harmonic resonance chamber, and then controlled the bright dipping order between them, made harmonic wave laser shift to an earlier date regular hour amount preferential emission than fundamental wave of laser.Fig. 4 is the signal waveforms that utilizes control module control Nd:YAG first-harmonic and Nd:YAG harmonic wave in the present embodiment.The power output waveform of first-harmonic harmonic corresponds respectively to the signal output waveform of Laser Power Devices 16 of the Laser Power Devices 14 harmonic resonators in first-harmonic resonance chamber, and promptly the shape of the signal output waveform of Laser Power Devices has determined the shape of the power output waveform of laser.In Fig. 4, the signal waveform of first-harmonic harmonic all has the different pulse width, and its pulse width is respectively T1 and T2.Among Fig. 4 between the fundamental signal harmonic signal maximum characteristics be: harmonic signal with regular hour lead Δ T than fundamental signal preferential emission.
Fig. 5 is the simplified block diagram that comprises the coupling device 20 of coupling optical and focusing optical in the present embodiment.The coupling optical of this coupling device comprises first-harmonic beam expanding lens 42, first-harmonic 45 degree deviation mirrors 44, harmonic wave beam expanding lens 46, principal wave harmonic wave 45 degree coupling mirrors 48; Focusing optical comprises one group of condenser lens 50.Wherein, 44 platings of first-harmonic 45 degree deviation mirrors are to the deielectric-coating of the high reflection of first-harmonic (wavelength is 1.064 microns) (incident angle is 45 degree); Principal wave harmonic wave 45 degree coupling mirrors 48 pass through the deielectric-coating of (incident angle is 45 degree) near the side 48a plating of harmonic wave beam expanding lens 46 to harmonic wave (wavelength is 532 nanometers) is high, principal wave harmonic wave 45 degree coupling mirrors 48 pass through the deielectric-coating of (incident angle is 45 degree) to the high reflection of first-harmonic (incident angle is 45 degree) and to humorous wave height near the side 48b plating of condenser lens 50; Condenser lens 50 plating is to the high deielectric-coating that passes through and humorous wave height is passed through of first-harmonic.The function of this coupling device is that the first-harmonic harmonic is coupled to together, focuses on the workpiece to be processed through focusing optical at last.After first-harmonic emits from first-harmonic resonance chamber 10, expand bundle through first-harmonic beam expanding lens 42, twice through first-harmonic 45 degree deviation mirrors 44 and principal wave harmonic wave 45 degree coupling mirrors 48 turns to again, focuses on the workpiece to be processed through focusing optical at last.After harmonic wave emits from harmonic resonance chamber 12, expand bundle, through principal wave harmonic wave 45 degree coupling mirrors 48, focus on the workpiece to be processed through condenser lens 50 at last again through harmonic wave beam expanding lens 46.
Above-mentioned coupling device is an embodiment in the utility model, and the personnel with laser field knowledge can change structure and this optic plated film of coupling optical very like a cork, realizes the first-harmonic harmonic is coupled to purpose together.Such as, the first-harmonic harmonic can be passed through Optical Fiber Transmission after emitting from first-harmonic resonance chamber harmonic resonator, passes through suitable coupling optical again, equally can realize the first-harmonic harmonic is coupled to purpose together.
Fig. 6 is to use non-achromatism condenser lens 52 to focus on the simplified block diagram of Nd:YAG first-harmonic and Nd:YAG harmonic wave.Commaterial has different refractive indexes to different wavelength of laser, thereby has different focal length.In the present embodiment, 52 pairs of Nd:YAG first-harmonics of non-achromatic lens and Nd:YAG harmonic wave have different focal length, thereby have produced focus difference Δ f1.This focus difference Δ f1 can reduce welding efficiency and welding quality in welding, even sometimes can not reach the result of welding.
Fig. 7 is to use achromatism condenser lens 54 to focus on the simplified block diagram of Nd:YAG first-harmonic and Nd:YAG harmonic wave.Though 54 pairs of Nd:YAG first-harmonics of achromatic lens and Nd:YAG harmonic wave still have different focal length, have also produced focus difference Δ f2; But this focus difference Δ f2 is lower than the focal length Δ f1 among Fig. 6 widely, is more suitable for being used for Laser Processing.Use achromatic lens 54 to be coupled to focus on the Nd:YAG first-harmonic and the Nd:YAG harmonic wave has improved welding efficiency and welding quality widely.
Claims (4)
1. laser welding apparatus is characterized in that: comprise first-harmonic resonance chamber (10), be used to produce the first bundle laser of the fundamental wavelength of pulse width variability; Harmonic resonance chamber (12) is used to produce the second bundle laser of the harmonic wave of pulse width variability; Control module (18) is used to control first-harmonic resonance chamber harmonic resonator Laser Power Devices separately, and then controls the bright dipping order between them, makes the second bundle laser restraint laser preferential emission a little than first; Coupling device (20), be used to the be coupled first bundle laser and the second bundle laser make this two bundles laser focus on the workpiece to be welded through identical condenser lens.
2. laser welding apparatus according to claim 1; It is characterized in that: described first-harmonic resonance chamber (10) comprising: Nd:YAG laser crystal bar (22); Mirror (26) before mirror behind the resonator (24) resonant cavity, the Laser Power Devices (14) in electric light pumping device (28) and first-harmonic resonance chamber; Mirror behind the resonator (24) is coated with the deielectric-coating to the high reflection of first-harmonic towards a side of laser crystal bar (22); Mirror (26) is coated with the deielectric-coating to the first-harmonic partial reflection towards a side of laser crystal bar (22) before the resonator; Two end faces of laser crystal bar (22) all are coated with the deielectric-coating that the first-harmonic height is passed through.
3. laser welding apparatus according to claim 1; It is characterized in that: described harmonic resonance chamber (12) comprising: Nd:YAG laser crystal bar (34); First resonator mirror (30) and second resonator mirror (32); Nonlinear optical crystal (36), harmonic wave outgoing mirror (38), the Laser Power Devices (16) of electric light pumping device (40) harmonic resonator; First resonator mirror (30) is coated with the deielectric-coating to the high reflection of first-harmonic near a side (30a) of laser crystal bar (34); Second resonator mirror (32) is coated with the deielectric-coating to the harmonious wave height reflection of first-harmonic near a side (32a) of nonlinear optical crystal (36); Two end faces of laser crystal bar (34) all are coated with the deielectric-coating that the first-harmonic height is passed through, and place near first resonator mirror (30); Two end faces of nonlinear optical crystal (36) all are coated with the deielectric-coating that the harmonious wave height of first-harmonic is passed through, and place near second resonator mirror (32); First resonator mirror (30), laser crystal bar (34), nonlinear optical crystal (36) and second resonator mirror (32) conllinear are placed; Harmonic wave outgoing mirror (38) is placed between laser crystal bar (34) and the nonlinear optical crystal (36); Harmonic wave outgoing mirror (38) is coated with the deielectric-coating that the first-harmonic height is passed through near a side (38a) of laser crystal bar, and harmonic wave outgoing mirror (38) is coated with near the side (38b) of nonlinear optical crystal (36) and passes through and to the deielectric-coating of humorous wave height reflection first-harmonic is high.
4. laser welding apparatus according to claim 1 is characterized in that: coupling device (20) comprises coupling optical and focusing optical; Coupling optical comprises first-harmonic beam expanding lens (42), first-harmonic 45 degree deviation mirrors (44), harmonic wave beam expanding lens (46), principal wave harmonic wave 45 degree coupling mirrors (48); Focusing optical comprises one group of condenser lens (50); First-harmonic 45 degree deviation mirror (44) platings are to the deielectric-coating of the high reflection of first-harmonic; The deielectric-coating that principal wave harmonic wave 45 degree coupling mirrors (48) pass through humorous wave height near a side (48a) plating of harmonic wave beam expanding lens (46), principal wave harmonic wave 45 degree coupling mirrors (48) near a side (48b) plating of condenser lens (50) to high reflection of first-harmonic and deielectric-coating that humorous wave height is passed through; Condenser lens (50) plating is to the high deielectric-coating that passes through and humorous wave height is passed through of first-harmonic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120009984 CN202212693U (en) | 2011-01-13 | 2011-01-13 | Laser welding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120009984 CN202212693U (en) | 2011-01-13 | 2011-01-13 | Laser welding equipment |
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|---|---|
| CN202212693U true CN202212693U (en) | 2012-05-09 |
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ID=46011963
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581485A (en) * | 2011-01-13 | 2012-07-18 | 深圳市光大激光科技股份有限公司 | Laser welding device |
-
2011
- 2011-01-13 CN CN 201120009984 patent/CN202212693U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581485A (en) * | 2011-01-13 | 2012-07-18 | 深圳市光大激光科技股份有限公司 | Laser welding device |
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Granted publication date: 20120509 |
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