CN201331603Y - Laser module coupling multi-path semi-conductor laser into single optical fiber - Google Patents
Laser module coupling multi-path semi-conductor laser into single optical fiber Download PDFInfo
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- CN201331603Y CN201331603Y CNU2008201806937U CN200820180693U CN201331603Y CN 201331603 Y CN201331603 Y CN 201331603Y CN U2008201806937 U CNU2008201806937 U CN U2008201806937U CN 200820180693 U CN200820180693 U CN 200820180693U CN 201331603 Y CN201331603 Y CN 201331603Y
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 21
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- 230000008878 coupling Effects 0.000 title abstract description 7
- 238000005859 coupling reaction Methods 0.000 title abstract description 7
- 239000000835 fiber Substances 0.000 claims description 6
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- 238000007789 sealing Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 3
- 238000005086 pumping Methods 0.000 abstract description 2
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Abstract
Disclosed is a laser module coupling multi-path semi-conductor laser into a single optical fiber. Light beams sent by a plurality of semi-conductor lasers located on a step heat sink are aligned sequentially in fast axis direction and slow axis direction via a micro-cylindrical lens and a cylindrical mirror, the directions of the light beams are changed and the distances among the light beams are reduced through corresponding reflecting mirrors, and the light beams are coupled into an optical fiber with small diameter to obtain high-power density light output via a lens-optical fiber component formed by coaxially mounting a self-focusing lens, a limiting ring, an optical fiber pin and a sleeve barrel. The coaxially mounted lens-optical fiber component is directly welded on a pipe mouth of a packaging casing. The laser module has extremely high reliability and compact appearance, and is particularly adaptable to applications needing high-power density material treatment and optical fiber laser pumping sources.
Description
Technical field
The utility model provides a kind of light beam that a plurality of independent semiconductor lasers are sent to merge the structure that is coupled into an optical fiber through shaping with after rearranging, by the laser module that this structure can obtain to have high power, high power density laser is exported.
Background technology
Semiconductor laser by optical fiber output has application fields.No matter be laser scalpel, or industrial lasers mark, cutting or all solid laser and fiber laser, all need to have fine light beam quality, high power density and use lasing light emitter flexibly.Export again by semiconductor laser is coupled into optical fiber, can satisfy this demand.The method one that realizes high power density optical fiber output laser is to improve the Output optical power density of single semiconductor laser, the 2nd, and the photosynthetic and back output with the output of a plurality of semiconductor lasers.
The success of first method depends on that the material of semiconductor laser is grown and progress, the difficulty of manufacture craft level are bigger and it is limited to promote, and is difficult to satisfy the central requirement more and more higher to optical power density of practical application.
Second method mainly depends on the improvement of coupling technique, and is simple relatively in the realization, is the main path that obtains high-power and super high power laser.Its implementation has two kinds: the one, and semiconductor laser manufactured in the chip one-level becomes monolithic array form, and parallel running rearranges the output light of each laser instrument in the array by shaping optical system and to be merged together output; Another kind of mode is that the output light with a plurality of independently semiconductor lasers is merged together output through shaping, and laser instrument can also can be connected in parallel connection.This dual mode respectively has its relative merits: because discrete lasers can be at the row filter that advances that is coupled, and can adopt separate refrigeration, therefore assembly reliability, consistance and the life-span that is combined into all is better than the assembly that uses array.
Two kinds of methods are arranged again on the merging mode.One, with each independently in laser instrument or the array output light of single laser instrument be coupled into an optical fiber separately, again multifiber is tied into a branch of output.This coupling scheme are simple relatively, but the useful area of optical fiber output light is bigger, and optical power density is not high enough.Two, adopt the special optical system that all output light are rearranged and be coupled into an optical fiber, so just can obtain than higher power density.
The utility model belongs to a kind of utility structure that the output of discrete laser instrument is optically coupled into a single fiber.
Summary of the invention
The utility model has solved the problem that output with two or more single-chip laser instruments is optically coupled into an optical fiber and is packaged into module, and key is the rearrangement that has solved light beam, can obtain high-power, highdensity laser output.Such laser module has very high reliability, compact appearance, need to be specially adapted to the material processed of high power density and the application of fiber laser pumping source.
Structure as shown in Figure 1.Two or more a plurality of semi-conductor chips (2) are welded respectively in transition heat sink (3), afterwards it are welded on each level of stepped appearance metal heat sink (1).Microtrabeculae lens (4) are installed in each laser instrument the place ahead makes light beam collimate at quick shaft direction.Light beam vertical chip end face by microtrabeculae lens (4) is fan-shaped ejaculation, shines on the cylindrical mirror (5) in the place ahead.The effect of this cylindrical mirror is that light beam is collimated at slow-axis direction, the parallel beam so the light beam that penetrates from cylindrical mirror is as the criterion.This group quasi-parallel light beam irradiates is to each self-corresponding catoptron (6) of the place ahead.Catoptron changes the direction of light beam on the one hand, guarantees that the optical axis of a plurality of light beams is positioned at same plane, the distance between the light beam is compressed simultaneously as far as possible.Beam separation is compressed more for a short time, and the number of lasers that can adopt under certain lens opening is just many more, also just can obtain higher Output optical power.Light beam through changing direction and having compressed spacing is focused on by GRIN Lens-optical fiber component on the fiber cores (8) finishes coupling.
GRIN Lens-optical fiber component is a core texture of finishing coupling function, sees Fig. 2.
Optical fiber (8) is installed in the center of cylindrical fiber contact pin (11) in advance, and its end face polishes, polishes, and the plating anti-reflection film.
GRIN Lens (7) is inserted in the adaptation ring (9), and the internal diameter of adaptation ring is identical with GRIN Lens, form drive fit, and the two is coaxial.The external diameter of adaptation ring is identical with the external diameter of optical fiber contact pins (11).
The cross section that the cylinder that is shaped as sealing of sleeve (12) or barrel are opened groove vertically is the opening cylinder of " C " shape, is made by metal or stupalith.
Sleeve (12) internal diameter and optical fiber contact pins (11) and adaptation ring (9) are drive fit, the adaptation ring (9) and the optical fiber contact pins (11) that will install GRIN Lens (7) insert sleeve (12) respectively from two ends, sleeve can guarantee that GRIN Lens (7) and optical fiber contact pins (11) and optical fiber (8) are coaxial.Distance between them is fixing with the spacing ring (10) that a length equals focal length.Adjusting makes its optical axis parallel with GRIN Lens-optical fiber component optical axis from the quasi-parallel light beam of catoptron (6), and light beam just can focus on the fiber cores, finishes coupling.
Make a circular ports (15) that is used to draw optical fiber on the module housing, its internal diameter is greater than the external diameter of GRIN Lens-optical fiber component middle sleeve (12), pipe upper opening (14), GRIN Lens-optical fiber component is positioned at the mouth of pipe (15) inside, it is carried out the position adjustment, after adjusting to maximum coupling efficiency, brazing metal or the glue that melts is injected in the mouth of pipe (15) upper end open (14), GRIN Lens-optical fiber component is welded in securely or is bonded in the mouth of pipe.
The utility model uses GRIN Lens to replace aspheric mirror commonly used or lens combination as the focus lamp of quasi-parallel light, greatly reduces cost.GRIN Lens and fiber-coaxial are installed in addition, and the complicacy that can directly GRIN Lens-optical fiber component be welded and also simplify adjustment greatly and install on the mouth of pipe.The parallel beam because the light beam that need assemble all is as the criterion is not that strict aplanatism light beam also can obtain good convergent effect though therefore arrive the light beam of GRIN Lens, can access the coupling efficiency greater than 85%.
Description of drawings
It is example that Fig. 1 is coupled into an optical fiber with three semiconductor lasers, has provided the one-piece construction schematic top view of the utility model module, and laser instrument, cylindrical mirror, catoptron and GRIN Lens-optical fiber component all are installed in the module housing.
Fig. 2 is the structure cut-open view of GRIN Lens-optical fiber component.
Among the figure: 1. ladder is heat sink, 2. tube core, and 3. transition is heat sink, 4. microtrabeculae lens, 5. cylindrical mirror, 6. catoptron, 7. GRIN Lens, 8. optical fiber, 9. adaptation ring, 10. spacing ring, 11. optical fiber contact pins, 12. sleeves, 13. the contact pin tail, 14. mouth of pipe upper sheds, 15. mouths of pipe, 16. base plate, 17. module housing, 18. fluid sealants.
Embodiment
With high-precision micropositioning stage and glue microtrabeculae lens (4) are installed to the place ahead of the semiconductor laser chip (2) that is contained in transition heat sink (3), make laser beam obtain collimation and penetrate perpendicular to laser end face at quick shaft direction.Direction and collimation by checking that far-field spot comes calibration beam in the installation process.
Being coupled into an optical fiber with three semiconductor lasers is example, sees Fig. 1.The transition heat sink (3) that will install microtrabeculae lens (4) and laser instrument (2) is welded on ladder heat sink (1), and laser instrument is connected electrode, and it can be that to connect also can be in parallel that electrode connects, then with on the heat sink base plate that is welded of ladder (16).
At each laser instrument cylindrical mirror (5) is installed before the light beam of microtrabeculae lens fast axis collimation respectively, this cylindrical mirror is installed on the base plate, makes laser beam obtain collimation at slow-axis direction.Regulating cylindrical mirror one by one is the focal length of cylindrical mirror to the distance of laser instrument.This moment, microtrabeculae lens (4) and cylindrical mirror (5) made laser beam all obtain collimation at fast axle and slow axis, had formed one group of three beams quasi-parallel light beam.The direction and the collimation of coming calibration beam by the inspection far-field spot equally in the installation.
A catoptron (6) is installed before each quasi-parallel light beam one by one, and catoptron is installed on the base plate.With four-dimensional (two dimension rotation, two-dimensional translation) micropositioning stage is adjusted the position and the direction of catoptron, by observing the far-field spot after reflecting, with the far-field spot marshalling, promptly allow the optical axis of light beam all be in same plane, and make the distance between the light beam be compressed to minimum, for example 0.2mm uses the glue stationary mirror.
Base plate (16) is installed in the module housing (17), adjust the position quasi-parallel light beam through mirror reflects is penetrated from the center of the mouth of pipe (15).
Optical fiber (8) is contained in the optical fiber contact pins (9), fixes, and its end face is ground, polishes, plates anti-reflection film with glue.GRIN Lens (7) is contained in the adaptation ring (10), and is inserted into and is bonded at an end of sleeve (12), insert spacing ring (10), again optical fiber contact pins (11) is inserted, hold out against spacing ring from the other end.
(two dimension is rotated in optical fiber contact pins tail (13) position GRIN Lens-optical fiber component to be fixed on one five dimension, three-dimensional translating) on the micropositioning stage, an end that GRIN Lens-optical fiber component is equipped with lens is gone into to module shell interpolation from the mouth of pipe (15), and another termination light power meter of optical fiber is measured Output optical power.Add electric current to laser instrument, measure, carry out five dimension adjustings repeatedly and make the power of optical fiber output reach maximum from the luminous power of optical fiber output.At this moment the scolder that melts is injected in the mouth of pipe from mouth of pipe upper shed (14), sleeve (12) is welded in the mouth of pipe (15); Perhaps injecting mouth of pipe upper shed (14) with glue is cemented in sleeve (12) in the mouth of pipe (15).Use fluid sealant (18) that sleeve (12), optical fiber contact pins (11), contact pin tail (13) and the mouth of pipe (15) are bonded together at last.
Claims (6)
1. laser module of the multi-channel semiconductor laser coupled being gone into simple optical fiber, its structure is that a plurality of chip of laser vertically are installed on the stepped appearance metal heat sink, the light beam of each laser instrument is all collimated at fast axle and slow-axis direction respectively by microtrabeculae lens and cylindrical mirror and then forms the light beam of quasi-parallel, the light beam of every road quasi-parallel all shines on the corresponding catoptron, catoptron changes the direction of light beam and the distance between the compression light beam, quasi-parallel light beam through reflection and compression passes through one by GRIN Lens, spacing ring, the GRIN Lens that optical fiber contact pins and sleeve constitute-optical fiber component focuses on and is coupled into simple optical fiber, and this GRIN Lens-optical fiber component is fixed on the mouth of pipe of module housing.
2. a kind of laser module of the multi-channel semiconductor laser coupled being gone into simple optical fiber according to claim 1, it is characterized by: GRIN Lens-optical fiber component is by a GRIN Lens of inserting adaptation ring, a spacing ring and coaxial being installed in the sleeve of optical fiber contact pins order constitute, GRIN Lens is inserted in the leakproof fit with it adaptation ring of internal diameter earlier, the adaptation ring external diameter is consistent with optical fiber contact pins, the adaptation ring and the optical fiber contact pins that will install GRIN Lens again insert sleeve respectively from two ends, sleeve diameter and the drive fit of optical fiber contact pins external diameter, make GRIN Lens and optical fiber contact pins coaxial, the distance between them is fixed with a spacing ring.
3. according to claim 1ly a kind of the multi-channel semiconductor laser coupled is gone into the laser module of simple optical fiber, it is characterized by: the optical fiber in GRIN Lens-optical fiber component is installed in the center of cylindrical fiber contact pin, and end face polishes, polishes, and the plating anti-reflection film.
4. a kind of laser module of the multi-channel semiconductor laser coupled being gone into simple optical fiber according to claim 1, it is characterized by: the cross section that the sleeve-shaped in GRIN Lens-optical fiber component is opened groove vertically for the cylinder or the barrel of sealing is the opening cylinder of " C " shape, and sleeve is that metal or stupalith are made.
5. a kind of laser module of the multi-channel semiconductor laser coupled being gone into simple optical fiber according to claim 1, it is characterized by: being used on the module housing drawn the mouth of pipe of optical fiber for circular, its internal diameter is greater than the external diameter of GRIN Lens-optical fiber component middle sleeve, the pipe upper opening, to in the brazing metal ascending pipe GRIN Lens-optical fiber component directly be weldingly fixed in the pipe by opening, or in the opening ascending pipe, GRIN Lens-optical fiber component be fixed with glue.
6. according to claim 1ly a kind of the multi-channel semiconductor laser coupled is gone into the laser module of simple optical fiber, it is characterized by: the number of laser instrument is more than or equal to 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201806937U CN201331603Y (en) | 2008-12-08 | 2008-12-08 | Laser module coupling multi-path semi-conductor laser into single optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201806937U CN201331603Y (en) | 2008-12-08 | 2008-12-08 | Laser module coupling multi-path semi-conductor laser into single optical fiber |
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| Publication Number | Publication Date |
|---|---|
| CN201331603Y true CN201331603Y (en) | 2009-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008201806937U Expired - Fee Related CN201331603Y (en) | 2008-12-08 | 2008-12-08 | Laser module coupling multi-path semi-conductor laser into single optical fiber |
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| CN (1) | CN201331603Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279446A (en) * | 2010-06-11 | 2011-12-14 | 北京中视中科光电技术有限公司 | Semiconductor laser fiber coupling module |
| CN102468602A (en) * | 2010-11-17 | 2012-05-23 | 北京中视中科光电技术有限公司 | Semiconductor laser light source |
| CN104755977A (en) * | 2012-10-10 | 2015-07-01 | 恩普乐股份有限公司 | Optical coupling element and optical module provided with same |
| CN108092130A (en) * | 2017-12-25 | 2018-05-29 | 北京凯普林光电科技股份有限公司 | A kind of capsulation structure for semiconductor laser |
| CN109595984A (en) * | 2018-12-27 | 2019-04-09 | 中国人民解放军陆军工程大学 | Aiming device |
| CN111684330A (en) * | 2017-12-29 | 2020-09-18 | 南京镭芯光电有限公司 | Fiber Photonic Engine |
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2008
- 2008-12-08 CN CNU2008201806937U patent/CN201331603Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279446A (en) * | 2010-06-11 | 2011-12-14 | 北京中视中科光电技术有限公司 | Semiconductor laser fiber coupling module |
| CN102468602A (en) * | 2010-11-17 | 2012-05-23 | 北京中视中科光电技术有限公司 | Semiconductor laser light source |
| CN104755977A (en) * | 2012-10-10 | 2015-07-01 | 恩普乐股份有限公司 | Optical coupling element and optical module provided with same |
| CN108092130A (en) * | 2017-12-25 | 2018-05-29 | 北京凯普林光电科技股份有限公司 | A kind of capsulation structure for semiconductor laser |
| CN111684330A (en) * | 2017-12-29 | 2020-09-18 | 南京镭芯光电有限公司 | Fiber Photonic Engine |
| US11112569B2 (en) | 2017-12-29 | 2021-09-07 | Nanjing Casela Technologes Corporation Limited | Fiber photon engine comprising cylindrically arranged planar ring of diodes coupled into a capillary/shell fiber |
| US11385420B2 (en) | 2017-12-29 | 2022-07-12 | Nanjing Casela Technologies Corporation Limited | Photon source comprising a plurality of optical sources and an optical shell to receive the light emitted by the optical source |
| CN109595984A (en) * | 2018-12-27 | 2019-04-09 | 中国人民解放军陆军工程大学 | Aiming device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091021 Termination date: 20141208 |
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| EXPY | Termination of patent right or utility model |