CN203932660U - A kind of high power multicore optical fiber laser - Google Patents
A kind of high power multicore optical fiber laser Download PDFInfo
- Publication number
- CN203932660U CN203932660U CN201420270129.XU CN201420270129U CN203932660U CN 203932660 U CN203932660 U CN 203932660U CN 201420270129 U CN201420270129 U CN 201420270129U CN 203932660 U CN203932660 U CN 203932660U
- Authority
- CN
- China
- Prior art keywords
- fiber
- multicore
- core
- output
- laser
- 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.)
- Expired - Lifetime
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 41
- 239000000835 fiber Substances 0.000 claims abstract description 134
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 238000005520 cutting process Methods 0.000 claims abstract description 4
- 230000004927 fusion Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000003466 welding Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000009022 nonlinear effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Lasers (AREA)
Abstract
The utility model relates to a kind of high power multicore optical fiber laser, by seed source, pattern matcher, amplifier, fiber optic transmission system composition, described seed source is by (N+1) x1 coupler and doped fiber, two fiber grating compositions, (N+1) output of x1 coupler connects a fiber grating successively, doped fiber, another fiber grating, described pattern matcher is made up of output optical fibre and the multi-core fiber of seed source, described amplifier is made up of multicore (N+1) x1 coupler and multicore doped fiber, the multi-core fiber of pattern matcher is connected with multicore (N+1) x1 coupler input, the output of multicore (N+1) x1 coupler is connected with multicore doped fiber, multicore doped fiber output end-grain cutting is put down or is drawn to bore to cut to put down with end cap and is fused into fiber optic transmission system Output of laser.The utility model is effectively real avoids non-linear phenomena, realizes ultra high power Laser output, has compact conformation, the feature that photoelectric conversion efficiency is high, reliable and stable, beam quality is excellent.
Description
Technical field:
The utility model belongs to fiber laser technology field, relate to a kind of high power multicore optical fiber laser, for single channel seed source signal coupling is entered in multi-core fiber, amplify by multi-core fiber, finally synthesize a road output, reach that to suppress high power non-linear, improve fiber laser power output, ensure the object of beam quality simultaneously.
Technical background:
Fiber laser is the third generation new laser after traditional gas laser and solid state laser, there is the advantages such as compact conformation, life-span are long, non-maintaining, good beam quality, energy-conserving and environment-protective, be successfully applied to machining, medical treatment, automobile making and the field such as military.Along with the continuous expansion of its application, as laser cutting and the welding of thick sheet metal in the industry such as automobile making, shipbuilding, wish that the power output of fiber laser reaches thousands of watts to tens of kilowatts.
Although the power output of simple optical fiber has broken through 2000W at present, but only limit to laboratory level, and due to the restriction of the physical mechanism such as nonlinear effect and fire damage in doped fiber, the further lifting of simple optical fiber power output will be very difficult, and the ripe general power of single-core fiber laser power unit is in 1500W left and right at present.
For improving the power output of fiber laser, this just need to be combined into a branch of output by multiple fiber laser power cells, mainly contains relevant synthetic and two kinds of methods of Incoherent beam combining.These two kinds methods of closing bundle are all based on single-core fiber, use multichannel unit laser module, finally complete laser synthetic.The relevant composite structure of fiber laser is comparatively complicated, owing to using multichannel disparate modules, need to carry out to modules the FEEDBACK CONTROL such as phase place, wavelength, frequency; Finally relevant closing restrainted or adopts multichannel space optical path to be coupled, or adopts many different fiber couplings, and the method all cannot ensure stability and consistency, and the highest laboratory of domestic and international report realization power is only thousands of watts at present.The Incoherent beam combining of fiber laser, also be that commercial synthetic technology is that power is synthetic, it,, by several laser beams are passed through to fused biconical taper, becomes a branch of, again with simple optical fiber welding, the method is simple and reliable, also can realize high-power output, but cannot ensure higher beam quality, commercial lasers device report at present, 7 road single-mode lasers, the incoherent bundle that closes, M2 is in 7 left and right.
Summary of the invention:
Defect and problem that the purpose of this utility model exists in order to overcome prior art, a kind of high power multicore optical fiber laser is provided, formed by seed source, pattern matcher, amplifier, fiber optic transmission system, the utility model can be avoided non-linear phenomena effectively in fact, realize the output of ultra high power laser, there is compact conformation, the feature that photoelectric conversion efficiency is high, reliable and stable, beam quality is excellent.
The technical solution of the utility model is:
A kind of high power multicore optical fiber laser, by seed source, pattern matcher, amplifier, fiber optic transmission system composition, it is characterized in that: described seed source is by (N+1) x1 coupler and doped fiber, two fiber grating compositions, (N+1) output of x1 coupler connects a fiber grating successively, doped fiber, another fiber grating, described pattern matcher is made up of output optical fibre and the multi-core fiber of seed source, described amplifier is made up of multicore (N+1) x1 coupler and multicore doped fiber, the multi-core fiber of pattern matcher is connected with multicore (N+1) x1 coupler input, the output of multicore (N+1) x1 coupler is connected with multicore doped fiber, multicore doped fiber output end-grain cutting is put down or is drawn to bore to cut to put down with end cap and is fused into fiber optic transmission system Output of laser.
The output optical fibre of described seed source and multi-core fiber, by drawing cone, expand or overuse optical fiber, make the output optical fibre power division of seed source in multi-core fiber.
The fibre core quantity of described multi-core fiber and multicore doped fiber is greater than 2.
The surrounding layer of described multi-core fiber and multicore doped fiber is circle or polygon.
It is symmetrical or asymmetric that the fibre core of described multi-core fiber and multicore doped fiber is arranged; Each core shape of multi-core fiber is identical or not identical.
Covering beyond the fibre core of described multi-core fiber and multicore doped fiber is single or multiple lift; The coat of covering outside is single or multiple lift.
Described multicore (N+1) x1 coupler, inputs unanimously with output signal optical fiber, and centre does not have fusion point.
State in multi-core fiber and multicore doped fiber, each road fibre core laser occurs relevant synthetic or incoherent beam combination occurs.
It is flat that described multicore doped fiber output draws cone to cut again, with one section of excessive fused fiber splice, and excessively one section of plated film end cap of fused fiber splice, output region laser.
The utility model uses multi-core fiber, can fully ensure the consistency of the index such as distance, refraction index profile between the core diameter, NA, core shape, fibre core of each fibre core, use single channel seed source to be coupled in multi-core fiber, can fully ensure the consistency of the indexs such as each fibre core wavelength, phase place, frequency.By the utility model, can solve the stability of bundle, the conforming problem of closing.If each road fibre core laser is incoherent, equally can be by drawing cone, make each road fibre core beam combination, due to the fibre core stability of multi-core fiber, can ensure equally the output of high light beam quality.
The utility model uses multicore doped fiber as amplifier section, use multi-core fiber directly and end cap welding as fiber optic transmission system, whole light path adopts few fusion point.The utility model can be avoided non-linear phenomena effectively in fact, realizes the output of ultra high power laser, has compact conformation, the feature that photoelectric conversion efficiency is high, reliable and stable, beam quality is excellent.
Brief description of the drawings:
Fig. 1 be the utility model embodiment provide front view.
Fig. 2 is a kind of multicore doped fiber refraction index profile schematic diagram.
Fig. 3 is a kind of multicore hexagon optical fiber schematic cross-section.
Fig. 4 a, Fig. 4 b, Fig. 4 c are respectively 3 cores, 4 cores, 19 core fibre schematic cross-sections.
Fig. 5 is multi-core fiber and seed source output optical fibre making pattern adaptation schematic diagram.
Fig. 6 is after multi-core fiber draws cone and the direct welding schematic diagram of end cap.
Fig. 7 is the schematic diagram of multichannel enlarging section gate leve connection.
Embodiment
As shown in Figure 1, a kind of high power multicore optical fiber laser, by seed source 1, pattern matcher 2, amplifier 3, fiber optic transmission system composition, it is characterized in that: described seed source 1 is by (N+1) x1 coupler 5 and doped fiber 6, two fiber gratings (7, 11) composition, (N+1) output of x1 coupler 5 connects a fiber grating 11 successively, doped fiber 6, another fiber grating 7, described pattern matcher 2 is made up of with multi-core fiber 12 output optical fibre 10 of seed source 1, described amplifier 3 is made up of multicore (N+1) x1 coupler 8 and multicore doped fiber 9, the multi-core fiber 12 of pattern matcher 2 is connected with multicore (N+1) x1 coupler 8 inputs, the output of multicore (N+1) x1 coupler 8 is connected with multicore doped fiber 9, multicore doped fiber 9 exports that end-grain cutting is flat is fused into fiber optic transmission system Output of laser with end cap 4.
Its preparation method is as follows:
1, seed source part, adopts (6+1) x1 coupler, input pump optical fiber 200/220, input-output optical fiber 20 ?400NA=0.065, doped fiber use 20 ?400 8 distortion optical fiber, the two pairs of gratings are same adopt 20 ?400 optical fiber.
As shown in Figure 2,7 core fibres, each core diameter 20um, fibre core mixes Ge, is step index and distributes, NA=0.065;
Middle core centre is 6 core centre 25um apart from edge, and clad material is pure quartz material; Fiber cladding external diameter 1500um; Covering outside applies the low-refraction glue of refractive index <1.36.
As shown in Figure 3,7 core fibres, each core diameter 20um, the pure quartz material of fibre core, the first cladding diameter 30um, mixes fluorine, and the second covering is pure quartz material;
As shown in Fig. 4 a, Fig. 4 b, be respectively 3 cores, 4 cores mix polygon optical fiber, Fig. 4 c is 19 core passive fibers.
2, divest the coat material of multi-core fiber, after cleaning up, use AFL LZM100CO2 to draw cone machine to draw cone, draw cone length 30mm, draw the rear external diameter of cone to be about 400um.
3, as shown in Figure 5, multi-core fiber draws to have bored in centre and cuts off, with seed source output optical fibre 20 ?400 weldings, welding is complete to be packaged in radiating shell, water flowing heat radiation below encapsulating material;
4, multi-core fiber (6+1) x1 coupler, input, output multi-core fiber are above-mentioned multi-core fiber, pumping optical fiber be 600 ?660 multimode fibers, this optical fiber list leg pump laser transmission 1000W, bundling device bears the above power of 6000W, owing to adopting side pump configuration, single channel fibre core loss of signal is less than 0.1dB.
5, the coat of multi-core fiber surface-coated one deck 3000um, use metal armouring to make optical cable, optical cable bending radius is greater than 0.5m, as shown in Figure 6, at one section of diameter 15mm of conical fiber afterbody welding, the end cap of length 30mm, end cap end face plating 1064nm AR film, end cap water-cooled is encapsulated in heat dissipation metal housing.
6, as shown in Figure 7, adopt same amplification mode, cascade multichannel amplification module, can realize high power, high light beam quality output.
In sum, this scheme can, with full optical fiber form, solve high power, high light beam quality partially coherent and incoherent Laser output.
Claims (9)
1. a high power multicore optical fiber laser, by seed source, pattern matcher, amplifier, fiber optic transmission system composition, it is characterized in that: described seed source is by (N+1) x1 coupler and doped fiber, two fiber grating compositions, (N+1) output of x1 coupler connects a fiber grating successively, doped fiber, another fiber grating, described pattern matcher is made up of output optical fibre and the multi-core fiber of seed source, described amplifier is made up of multicore (N+1) x1 coupler and multicore doped fiber, the multi-core fiber of pattern matcher is connected with multicore (N+1) x1 coupler input, the output of multicore (N+1) x1 coupler is connected with multicore doped fiber, multicore doped fiber output end-grain cutting is put down or is drawn to bore to cut to put down with end cap and is fused into fiber optic transmission system Output of laser.
2. high power multicore optical fiber laser as claimed in claim 1, is characterized in that: the output optical fibre of described seed source and multi-core fiber, by drawing cone, expand or overuse optical fiber, make the output optical fibre power division of seed source in multi-core fiber.
3. high power multicore optical fiber laser as claimed in claim 1, is characterized in that: the fibre core quantity of described multi-core fiber and multicore doped fiber is greater than 2.
4. high power multicore optical fiber laser as claimed in claim 1, is characterized in that: the surrounding layer of described multi-core fiber and multicore doped fiber is circle or polygon.
5. the high power laser light bundling device of multi-core fiber as claimed in claim 1, is characterized in that: it is symmetrical or asymmetric that the fibre core of described multi-core fiber and multicore doped fiber is arranged; Each core shape of multi-core fiber is identical or not identical.
6. high power multicore optical fiber laser as claimed in claim 1, is characterized in that: the covering beyond the fibre core of described multi-core fiber and multicore doped fiber is single or multiple lift; The coat of covering outside is single or multiple lift.
7. high power multicore optical fiber laser as claimed in claim 1, is characterized in that: described multicore (N+1) x1 coupler, to input unanimously with output signal optical fiber, and centre does not have fusion point.
8. high power multicore optical fiber laser as claimed in claim 1, is characterized in that: state in multi-core fiber and multicore doped fiber, each road fibre core laser occurs relevant synthetic or incoherent beam combination occurs.
9. high power multicore optical fiber laser as claimed in claim 1, is characterized in that: it is flat that described multicore doped fiber output draws cone to cut again, with one section of excessive fused fiber splice, and excessively one section of plated film end cap of fused fiber splice, output region laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420270129.XU CN203932660U (en) | 2014-05-23 | 2014-05-23 | A kind of high power multicore optical fiber laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420270129.XU CN203932660U (en) | 2014-05-23 | 2014-05-23 | A kind of high power multicore optical fiber laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203932660U true CN203932660U (en) | 2014-11-05 |
Family
ID=51828416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420270129.XU Expired - Lifetime CN203932660U (en) | 2014-05-23 | 2014-05-23 | A kind of high power multicore optical fiber laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203932660U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104051937A (en) * | 2014-05-23 | 2014-09-17 | 武汉锐科光纤激光器技术有限责任公司 | High-power multi-core optical fiber laser device |
| CN110073174A (en) * | 2016-12-29 | 2019-07-30 | 直观外科手术操作公司 | The method and apparatus for determining form parameter using the sensing optical fiber of the single with a variety of light spread modes |
-
2014
- 2014-05-23 CN CN201420270129.XU patent/CN203932660U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104051937A (en) * | 2014-05-23 | 2014-09-17 | 武汉锐科光纤激光器技术有限责任公司 | High-power multi-core optical fiber laser device |
| CN110073174A (en) * | 2016-12-29 | 2019-07-30 | 直观外科手术操作公司 | The method and apparatus for determining form parameter using the sensing optical fiber of the single with a variety of light spread modes |
| US11035699B2 (en) | 2016-12-29 | 2021-06-15 | Intuitive Surgical Operations, Inc. | Methods and apparatus for determining shape parameter(s) using a sensing fiber having a single core with multiple light propagating modes |
| CN110073174B (en) * | 2016-12-29 | 2022-04-26 | 直观外科手术操作公司 | Method and apparatus for determining shape parameters using a sensing optical fiber having a single core with multiple light propagation modes |
| US11473941B2 (en) | 2016-12-29 | 2022-10-18 | Intuitive Surgical Operations, Inc. | Methods and apparatus for determining shape parameter(s) using a sensing fiber having a single core with multiple light propagating modes |
| US11940305B2 (en) | 2016-12-29 | 2024-03-26 | Intuitive Surgical Operations, Inc. | Methods and apparatus for determining shape parameter(s) using a sensing fiber having a single core with multiple light propagating modes |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5738275B2 (en) | Fiber-based laser combiner | |
| CN100427979C (en) | Laser power integrated device and its implement method | |
| CN105826800B (en) | All-fiber broadband flat mid-infrared super-continuum spectrum light source | |
| CN104051937A (en) | High-power multi-core optical fiber laser device | |
| CN104035166A (en) | Multi-core optical fiber based high power laser beam combiner | |
| CN204790085U (en) | Fiber combiner | |
| CN103412369A (en) | Optical fiber beam combiner and preparation method thereof | |
| CN102967981A (en) | Super-continuous spectrum light source based on multicore photonic crystal fiber | |
| CN202995205U (en) | Multicore photonic crystal fiber based supercontinuum source | |
| CN202373839U (en) | Multistage cascading type 1064nm band high-power active seeker electronics (ASE) light source | |
| JP2016173472A (en) | Optical transmission device and optical transmission method | |
| CN202837591U (en) | Diaphragm type optical fiber laser coupler | |
| CN201955492U (en) | Doubly clad optical fiber laser coupling device | |
| CN203932660U (en) | A kind of high power multicore optical fiber laser | |
| CN104330848A (en) | Optical fiber power beam combiner with high mode field duty ratio | |
| CN205427234U (en) | Mould field adapter and fiber laser | |
| CN105281185A (en) | Multi-core fiber laser and preparation method of the same | |
| CN212230771U (en) | High-power optical fiber laser | |
| Kang et al. | Broadband low-loss fan-in/fan-out devices for multicore fibers | |
| CN203480073U (en) | Fiber combiner | |
| CN203930134U (en) | High power laser light bundling device based on multi-core fiber | |
| CN103698841A (en) | Microstructure fiber device | |
| CN103872559A (en) | Thulium doped all-fiber laser outputting high-power two micrometer laser | |
| CN204790068U (en) | High -power optical collimator | |
| CN103904558B (en) | A kind of new blue and violet laser sources |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 430074 East Lake science and technology zone, Wuhan province high tech Avenue, No. 999, the future of science and technology city of the city of Hubei Patentee after: WUHAN RAYCUS FIBER LASER TECHNOLOGIES Co.,Ltd. Address before: 430223 East Lake New Technology Development Zone, Huazhong University of Science and Technology, Wuhan science and technology park innovation base, building No. 10, building No. Patentee before: WUHAN RAYCUS FIBER LASER TECHNOLOGIES Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141105 |