CN105932529A - Laser device with adaptively adjusted laser power - Google Patents
Laser device with adaptively adjusted laser power Download PDFInfo
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- CN105932529A CN105932529A CN201610339625.XA CN201610339625A CN105932529A CN 105932529 A CN105932529 A CN 105932529A CN 201610339625 A CN201610339625 A CN 201610339625A CN 105932529 A CN105932529 A CN 105932529A
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- fiber
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- 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
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- 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
- H01S5/00—Semiconductor lasers
- H01S5/06—Arrangements for controlling the laser output parameters, e.g. by operating on the active medium
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Lasers (AREA)
Abstract
The invention discloses a laser device with an adaptively adjusted laser power. The laser device comprises a pump light source, a clad optical fiber and a transmission fiber, wherein the side surface or the end surface of the pump light source pumps the clad optical fiber; the clad optical fiber further comprises a laser gain medium fiber core located at the center; the laser gain medium fiber core is sequentially coated with an isolating layer, a fluorescent material layer and an outer clad layer from the inside to the outside; the refractive index of the laser gain medium fiber core is greater than that of the isolating layer; the refractive index of the isolating layer is greater than that of the fluorescent material layer; the refractive index of the fluorescent material layer is greater than that of the outer clad layer; a first fiber bragg grating and a second fiber bragg grating are arranged at an input end and an output end of the clad optical fiber respectively; the end surface, located at one side of the pump light source, of the clad optical fiber is provided with a tail mirror; and a first convex lens and a second convex lens are sequentially arranged between the clad optical fiber and the transmission fiber. By the laser device, the perforating rate is greatly improved. Perforation can be automatically carried out by the maximum power close to the critical value; and safety redundancy does not need to be preset, so that the perforation efficiency is greatly improved; and the perforation reject ratio is also reduced.
Description
Technical field
The present invention relates to a kind of laser instrument with self-adaptative adjustment laser power, belong to laser cutting technique field.
Background technology
Existing laser cutting process control method mainly completes cutting processing by program desired guiding trajectory, speed, power.Existing laser processing technology exists an efficiency and the contradiction of yield, such as bore a hole, for perforation to be quickly finished, it is desirable that use high power, to provide bigger energy to input, but the too high acutely gasification easily causing again metal material in molten bath of the energy of input sets off an explosion to cause and bores a hole unsuccessfully, and produces ejecta pollution eyeglass.Traditional solution is, preset the relatively low power of ratio in a program, and complete perforation with the longer time and guarantee to penetrate, reserved higher redundancy ensures quality and the safety of perforation, it is low that this mode leaves working (machining) efficiency, excessively depends on conventional experience and data, and is difficult to accomplish to control in real time, owing to, during for new Product processing, these problems seem and more protrude.
Summary of the invention
It is an object of the present invention to provide a kind of laser instrument with self-adaptative adjustment laser power, this laser instrument with self-adaptative adjustment laser power promotes punching rate greatly, owing to can automatically use the peak power close to critical value to bore a hole, piercing efficiency need not be greatly improved preset security redundancy, also reduce the fraction defective of perforation.
nullFor reaching above-mentioned purpose，The technical solution used in the present invention is: a kind of laser instrument with self-adaptative adjustment laser power，Including pump light source、Cladded-fiber and Transmission Fibers，Cladded-fiber described in described pump light source profile pump or end pumping，Described cladded-fiber farther includes to be positioned at the gain medium fibre core at center，This gain medium fibre core is coated with separation layer the most successively、Fluorescent material layer and surrounding layer，The refractive index of gain medium fibre core is more than the refractive index of separation layer，The fluorescent material layer refractive index that the refractive index of separation layer is more than，Fluorescent material layer refractive index is more than the refractive index of surrounding layer，The input of described cladded-fiber and output are respectively arranged with the first Fiber Bragg Grating FBG、Second Fiber Bragg Grating FBG，And cladded-fiber is positioned at the end face of pump light source side and has a tail mirror，The first convex lens it are disposed with between described cladded-fiber and Transmission Fibers、Second convex lens，Doped with Nd in described gain medium layer3+、Cr3+、Er3+、Yb3+Ion；
A half-reflection and half-transmission wafer it is provided with between the first convex lens, the second convex lens, this half-reflection and half-transmission wafer and light path are that a sharp angle is arranged, it is transferred to Transmission Fibers from the laser of cladded-fiber through half-reflection and half-transmission wafer and the light from Transmission Fibers is reflected through half-reflection and half-transmission wafer, being positioned at immediately below half-reflection and half-transmission wafer and be disposed with LPF mirror, focus lamp from top to bottom, this focus lamp receives the reflection light from half-reflection and half-transmission wafer；One imager is positioned at focus lamp side, for receiving the light of self-focus lens.
The technical scheme improved further in technique scheme is as follows:
As preferably, described pump light source is sunshine pumping source, flash lamp pumping source, photoconductive tube pumping source, continuous lamp pumping source, semiconductor array laser pumping source or array light-emitting diode pumping source.
As preferably, doped with Cr in described fluorescent material layer3+、Ti3+、Yb3+、Er3+Ion.
Owing to technique scheme is used, the present invention compared with prior art has following advantages and an effect:
1, the present invention has the laser instrument of self-adaptative adjustment laser power, it promotes punching rate greatly, owing to can automatically use the peak power close to critical value to bore a hole, piercing efficiency need not be greatly improved preset security redundancy, also the fraction defective of perforation is reduced, on-line monitoring function at a high speed is so that blast hole reduces rapidly laser power before occurring, it is to avoid it occurs, thus almost so that each perforation all obtains the effect of stable homogeneous；Secondly, it, when cutting high reflecting material, can detect that optical maser wavelength exceedes setting threshold value in time, stops rapidly avoiding laser backtracking, and owing to being the light velocity before, the response time is fast；Again, the input of its cladded-fiber and output are respectively arranged with the first Fiber Bragg Grating FBG, the second Fiber Bragg Grating FBG, and cladded-fiber is positioned at the end face of pump light source side and has a tail mirror, in will be located in cladded-fiber, unabsorbed seed light multiple reflections goes back, be conducive to improving light source utilization rate, form high stable laser.
2, the present invention has the laser instrument of self-adaptative adjustment laser power, and it improves cutting speed, can try out high power and cut, and the fast power redundancy of cutting speed is little, and laser energy is fully used；And reduce cutting fraction defective, adjust rapidly power according to monitoring result before cutting unsuccessfully generation, or stop processing, again cut after handling failure, avoiding large-scale workpiece because bad the causing of partial cut is scrapped, cut state analysis, by a large amount of process datas producing it, an accurate quantization can be had cut state to judge, provide initial data for improving and develop new cutting technique.
Accompanying drawing explanation
Accompanying drawing 1 has the laser structure schematic diagram of self-adaptative adjustment laser power for the present invention；
Accompanying drawing 2 is the partial structurtes schematic diagram of accompanying drawing 1.
In the figures above: 1, pump light source；2, cladded-fiber；21, gain medium fibre core；22, separation layer；23, fluorescent material layer；24, surrounding layer；3, Transmission Fibers；4, the first Fiber Bragg Grating FBG；5, the second Fiber Bragg Grating FBG；6, tail mirror；7, the first convex lens；8, the second convex lens；9, half-reflection and half-transmission wafer；10, LPF mirror；11, focus lamp；12, imager.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described:
nullEmbodiment 1: a kind of laser instrument with self-adaptative adjustment laser power，Including pump light source 1、Cladded-fiber 2 and Transmission Fibers 3，Cladded-fiber 2 described in described pump light source profile pump or end pumping，Described cladded-fiber 2 farther includes to be positioned at the gain medium fibre core 21 at center，This gain medium fibre core 21 is coated with separation layer 22 the most successively、Fluorescent material layer 23 and surrounding layer 24，The refractive index of gain medium fibre core 21 is more than the refractive index of separation layer 22，Fluorescent material layer 23 refractive index that the refractive index of separation layer 22 is more than，Fluorescent material layer 23 refractive index is more than the refractive index of surrounding layer 24，The input of described cladded-fiber 2 and output are respectively arranged with the first Fiber Bragg Grating FBG 4、Second Fiber Bragg Grating FBG 5，And cladded-fiber 2 is positioned at the end face of pump light source 1 side and has a tail mirror 6，The first convex lens 7 it are disposed with between described cladded-fiber 2 and Transmission Fibers 3、Second convex lens 8；
It is provided with a half-reflection and half-transmission wafer 9 between first convex lens the 7, second convex lens 8, this half-reflection and half-transmission wafer 9 and light path are that a sharp angle is arranged, it is transferred to Transmission Fibers 3 from the laser of cladded-fiber 2 through half-reflection and half-transmission wafer 9 and the light from Transmission Fibers 3 is reflected through half-reflection and half-transmission wafer 9, being positioned at immediately below half-reflection and half-transmission wafer 9 and be disposed with LPF mirror 10, focus lamp 11 from top to bottom, this focus lamp 11 receives the reflection light from half-reflection and half-transmission wafer 9；One imager 12 is positioned at focus lamp 11 side, for receiving the light of self-focus lens 11.
Above-mentioned pump light source 1 is flash lamp pumping source, doped with Nd in above-mentioned gain medium fibre core 213+Ion.
Doped with Yb in above-mentioned gain medium fibre core 213+Ion；Doped with Er in above-mentioned fluorescent material layer 233+Ion.
nullEmbodiment 2: a kind of laser instrument with self-adaptative adjustment laser power，Including pump light source 1、Cladded-fiber 2 and Transmission Fibers 3，Cladded-fiber 2 described in described pump light source profile pump or end pumping，Described cladded-fiber 2 farther includes to be positioned at the gain medium fibre core 21 at center，This gain medium fibre core 21 is coated with separation layer 22 the most successively、Fluorescent material layer 23 and surrounding layer 24，The refractive index of gain medium fibre core 21 is more than the refractive index of separation layer 22，Fluorescent material layer 23 refractive index that the refractive index of separation layer 22 is more than，Fluorescent material layer 23 refractive index is more than the refractive index of surrounding layer 24，The input of described cladded-fiber 2 and output are respectively arranged with the first Fiber Bragg Grating FBG 4、Second Fiber Bragg Grating FBG 5，And cladded-fiber 2 is positioned at the end face of pump light source 1 side and has a tail mirror 6，The first convex lens 7 it are disposed with between described cladded-fiber 2 and Transmission Fibers 3、Second convex lens 8；
It is provided with a half-reflection and half-transmission wafer 9 between first convex lens the 7, second convex lens 8, this half-reflection and half-transmission wafer 9 and light path are that a sharp angle is arranged, it is transferred to Transmission Fibers 3 from the laser of cladded-fiber 2 through half-reflection and half-transmission wafer 9 and the light from Transmission Fibers 3 is reflected through half-reflection and half-transmission wafer 9, being positioned at immediately below half-reflection and half-transmission wafer 9 and be disposed with LPF mirror 10, focus lamp 11 from top to bottom, this focus lamp 11 receives the reflection light from half-reflection and half-transmission wafer 9；One imager 12 is positioned at focus lamp 11 side, for receiving the light of self-focus lens 11.
Above-mentioned pump light source 1 is semiconductor array laser pumping source, doped with Cr in above-mentioned gain medium fibre core 213+Ion；
Doped with Yb in above-mentioned fluorescent material layer 233+Ion.
When using the above-mentioned laser instrument with self-adaptative adjustment laser power, it promotes punching rate greatly, owing to can automatically use the peak power close to critical value to bore a hole, piercing efficiency need not be greatly improved preset security redundancy, also the fraction defective of perforation is reduced, on-line monitoring function at a high speed is so that blast hole reduces rapidly laser power before occurring, it is to avoid it occurs, thus almost so that each perforation all obtains the effect of stable homogeneous；Secondly, it, when cutting high reflecting material, can detect that optical maser wavelength exceedes setting threshold value in time, stops rapidly avoiding laser backtracking, and owing to being the light velocity before, the response time is fast；Again, the input of its cladded-fiber and output are respectively arranged with the first Fiber Bragg Grating FBG, the second Fiber Bragg Grating FBG, and cladded-fiber is positioned at the end face of pump light source side and has a tail mirror, in will be located in cladded-fiber, unabsorbed seed light multiple reflections goes back, be conducive to improving light source utilization rate, form high stable laser；Again, it improves cutting speed, can try out high power and cut, and the fast power redundancy of cutting speed is little, and laser energy is fully used；And reduce cutting fraction defective, adjust rapidly power according to monitoring result before cutting unsuccessfully generation, or stop processing, again cut after handling failure, avoiding large-scale workpiece because bad the causing of partial cut is scrapped, cut state analysis, by a large amount of process datas producing it, an accurate quantization can be had cut state to judge, provide initial data for improving and develop new cutting technique.
Above-described embodiment only for technology design and the feature of the present invention are described, its object is to allow person skilled in the art will appreciate that present disclosure and to implement according to this, can not limit the scope of the invention with this.All equivalence changes made according to spirit of the invention or modification, all should contain within protection scope of the present invention.
Claims (3)
- null1. a laser instrument with self-adaptative adjustment laser power，It is characterized in that: include pump light source (1)、Cladded-fiber (2) and Transmission Fibers (3)，Cladded-fiber (2) described in described pump light source profile pump or end pumping，Described cladded-fiber (2) farther includes to be positioned at the gain medium fibre core (21) at center，This gain medium fibre core (21) is coated with separation layer (22) the most successively、Fluorescent material layer (23) and surrounding layer (24)，The refractive index of gain medium fibre core (21) is more than the refractive index of separation layer (22)，Fluorescent material layer (23) refractive index that the refractive index of separation layer (22) is more than，Fluorescent material layer (23) refractive index is more than the refractive index of surrounding layer (24)，The input of described cladded-fiber (2) and output are respectively arranged with the first Fiber Bragg Grating FBG (4)、Second Fiber Bragg Grating FBG (5)，And cladded-fiber (2) is positioned at the end face of pump light source (1) side and has a tail mirror (6)，The first convex lens (7) it are disposed with between described cladded-fiber (2) and Transmission Fibers (3)、Second convex lens (8)；Doped with Nd in described gain medium fibre core (21)3+、Cr3+、Er3+、Yb3+Ion；It is positioned at the first convex lens (7), a half-reflection and half-transmission wafer (9) it is provided with between second convex lens (8), this half-reflection and half-transmission wafer (9) and light path are that a sharp angle is arranged, it is transferred to Transmission Fibers (3) from the laser of cladded-fiber (2) through half-reflection and half-transmission wafer (9) and the light from Transmission Fibers (3) is reflected through half-reflection and half-transmission wafer (9), it is positioned at immediately below half-reflection and half-transmission wafer (9) and is disposed with LPF mirror (10) from top to bottom, focus lamp (11), this focus lamp (11) receives the reflection light from half-reflection and half-transmission wafer (9)；One imager (12) is positioned at focus lamp (11) side, carrys out the light of self-focus lens (11) for reception.
- The laser instrument with self-adaptative adjustment laser power the most according to claim 1, it is characterised in that: described pump light source (1) is sunshine pumping source, flash lamp pumping source, photoconductive tube pumping source, continuous lamp pumping source, semiconductor array laser pumping source or array light-emitting diode pumping source.
- The laser instrument with self-adaptative adjustment laser power the most according to claim 1, it is characterised in that: doped with Cr in described fluorescent material layer (23)3+、Ti3+、Yb3+、Er3+Ion.
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| CN201610339625.XA CN105932529B (en) | 2016-05-20 | 2016-05-20 | Laser with adaptive adjustment laser power |
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| CN201610339625.XA CN105932529B (en) | 2016-05-20 | 2016-05-20 | Laser with adaptive adjustment laser power |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101404377A (en) * | 2008-10-31 | 2009-04-08 | 福州高意通讯有限公司 | Optical fiber laser |
| CN201247902Y (en) * | 2008-07-22 | 2009-05-27 | 福州高意通讯有限公司 | Sum-frequency laser |
| CN103956638A (en) * | 2014-01-17 | 2014-07-30 | 华南理工大学 | Tunable narrow-linewidth single-frequency linear-polarization laser device |
| CN104638507A (en) * | 2015-02-08 | 2015-05-20 | 北京工业大学 | Volume Bragg grating mode selection-based permutation type gain grating self-adapting laser |
| CN204558878U (en) * | 2015-02-08 | 2015-08-12 | 北京工业大学 | A kind of gain grating reciprocity formula self adaptation laser based on Volume Bragg grating |
-
2016
- 2016-05-20 CN CN201610339625.XA patent/CN105932529B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201247902Y (en) * | 2008-07-22 | 2009-05-27 | 福州高意通讯有限公司 | Sum-frequency laser |
| CN101404377A (en) * | 2008-10-31 | 2009-04-08 | 福州高意通讯有限公司 | Optical fiber laser |
| CN103956638A (en) * | 2014-01-17 | 2014-07-30 | 华南理工大学 | Tunable narrow-linewidth single-frequency linear-polarization laser device |
| CN104638507A (en) * | 2015-02-08 | 2015-05-20 | 北京工业大学 | Volume Bragg grating mode selection-based permutation type gain grating self-adapting laser |
| CN204558878U (en) * | 2015-02-08 | 2015-08-12 | 北京工业大学 | A kind of gain grating reciprocity formula self adaptation laser based on Volume Bragg grating |
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Effective date of registration: 20201222 Address after: 061000 No.5, Bohai South planning road, Yunhe District, Cangzhou City, Hebei Province Patentee after: CANGZHOU LEAD LASER TECHNOLOGY Co.,Ltd. Address before: 215308 no.1885, Zhonghua Garden West Road, Yushan Town, Kunshan City, Suzhou City, Jiangsu Province Patentee before: SUZHOU LEAD LASER TECHNOLOGY Co.,Ltd. |