CN202383321U - Coupled system for coupling multichannel discrete semiconductor lasers into single fiber - Google Patents
Coupled system for coupling multichannel discrete semiconductor lasers into single fiber Download PDFInfo
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- CN202383321U CN202383321U CN2011205345429U CN201120534542U CN202383321U CN 202383321 U CN202383321 U CN 202383321U CN 2011205345429 U CN2011205345429 U CN 2011205345429U CN 201120534542 U CN201120534542 U CN 201120534542U CN 202383321 U CN202383321 U CN 202383321U
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Abstract
The utility model discloses a coupled system for coupling multichannel discrete semiconductor lasers into a single fiber, belonging to the technical field of lasers. The system comprises multichannel lasers, a step heat sink, a focusing lens and a coupled fiber, wherein the lasers are installed on the step planes of the step heat sink through transition heat sinks. The front of each laser is sequentially provided with a fast-axis collimating lens and a reflection prism, the fast-axis collimating lens is coaxial with the output beams of the laser, and the reflecting prism causes the output beams of the laser to be reflected to the incident plane of the focusing lens on the same direction. The optical path between the output end of each laser and the outgoing plane of the corresponding reflection prism is the same, and the back of the outgoing plane of the focusing lens is provided with the coupled fiber coaxial with the focusing lens. Each reflection prism is a total reflection prism, and the incident plane or the outgoing plane of the total reflection prism is a cylindrical surface for carrying out slow-axis collimation for the output beams of the lasers. A laser assembly with tiny volume, ultra-high power and extremely-high power density can be obtained through the system.
Description
Technical field
The utility model belongs to laser technology field, relates to a kind of light beam that multichannel discrete semiconductor laser instrument is sent and merges the coupled system that is coupled into simple optical fiber through shaping with after arranging again.
Background technology
Semiconductor laser through 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 have good beam quality, high power density and use LASER Light Source flexibly.Semiconductor laser is coupled into simple optical fiber exports again, can satisfy this demand.The method that realizes high power density optical fiber output laser has two kinds: the one, and the Output optical power density of the single semiconductor laser of raising; The 2nd, with the light combination back output of a plurality of semiconductor laser chip outputs.
The growth of semiconductor laser chip material, the lifting of equipment level and the progress of manufacture craft level are depended in the success of first method, realize that at present difficulty is bigger.Second method mainly depends on the improvement of coupling technique, and is simple relatively in the realization, is to obtain the main path high-power and output of super high power laser at present.For aforementioned second method; Its implementation has two kinds: a kind of is to adopt the array assembly; Exactly semiconductor laser is made into the monolithic array form in the chip one-level; Making its parallel running, is a branch of integrated optical source output through shaping optical system with the output light of each laser instrument in array permutation and combination again; Another kind method is to adopt many discrete semiconductor chip of laser to arrange with parallel connection or series system, and with the light that all chips are exported separately, the process shaping merges to forms integrated optical source output together.Above-mentioned dual mode respectively has quality, but discrete lasers can be at the coupling row filter that advances, and can adopt separate refrigeration, and therefore its reliability of assembly, consistance and the life-span after many laser instruments combinations all is better than the assembly that uses array.
Two kinds of methods are arranged again on the merging mode.One of which, with each independently in chip of laser or the array output light of single laser element be coupled into an optical fiber separately, again multifiber is bundled 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, can not obtain specific beam mode.Its two, adopt the special optical system that an optical fiber is arranged and be coupled into to the output light of each unit in all chip of laser or the array again, thereby obtain higher power density, and can obtain the particular beam pattern that needs.
Because must being installed in, the discrete semiconductor chip of laser has on a certain size heat sink; If directly coupling is arranged and focused on to the output beam of a plurality of semiconductor lasers; Usually owing to receive the restriction of each chip and its heat sink volume; The combined light beam volume is bigger, is difficult to obtain the optical fiber coupling output of little core diameter high power density.For reducing the spatial volume size of combined light beam, must take certain measure.More existing schemes are arranged the light beam of a plurality of discrete semiconductor laser instrument outputs through taking various special measures again, make the spatial volume of beam combination enough little, and the scioptics group is coupled into optical fiber again; These handle general Installation and Debugging more complicated, are not easy to realize.Like No. 6324230, the United States Patent (USP) of Polaroid company, the U.S. Pat 2007/0116071A1 of Nlight Corporation etc.
The utility model content
The purpose of the utility model is to provide a kind of multichannel discrete semiconductor laser coupled is gone into the coupled system of simple optical fiber, through this system architecture can obtain to have small volume, the laser assembly of ultra high power, very high power density.
The technical scheme of the utility model is:
A kind of multichannel discrete semiconductor laser coupled is gone into the coupled system of simple optical fiber, it is characterized in that comprising multiple path laser, a ladder is heat sink, a condenser lens, a coupled fiber; Said laser instrument is installed on the heat sink ladder plane of said ladder through transition is heat sink, is provided with successively before each said laser instrument with the coaxial fast axis collimation lens, of Laser Output Beam to make Laser Output Beam reflex to the reflecting prism of the said convergent lens plane of incidence with same direction; Each said laser output is to the equivalent optical path of its corresponding reflecting prism exit facet; Be provided with the said coupled fiber coaxial behind the said convergent lens exit facet with it; Wherein, said reflecting prism is a total reflection prism, and the plane of incidence of said total reflection prism or exit facet are the cylinder that a pair of said Laser Output Beam is carried out the slow axis collimation.
Further, between the ladder plane at said laser instrument place for being parallel to each other and equally spaced.
Further, said ladder plane is parallel with laser instrument PN junction junction plane.
Further, said spacing minimum value is that Laser Output Beam is through shining the width of light beam of the quick shaft direction on the said reflecting prism behind the fast axis collimation.
Further, each said laser electrode is parallel connection or series connection.
Further, the laser instrument output optical axis that the reflecting surface of each said reflecting prism is parallel mutually and corresponding with it is angled.
Further, the angle ranging from 45 °.
Further, said laser instrument is identical wavelength or different wavelength of laser device.
Further, said fast axis collimation lens is microtrabeculae lens or cylindrical mirror.
The structure of the utility model is as shown in Figure 1,
Two or more semiconductor lasers 1 are fixed in the transition heat sink 2 through the mode of being welded respectively; Microtrabeculae lens 3 are installed in the place ahead of each laser instrument makes light beam at the quick shaft direction collimation; Afterwards transition heat sink 2 is welded and is fixed on the ladder heat sink 5; Each level of 5 that ladder is heat sink is all parallel and equidistant on Y (the Y axle is the output optical axis direction of semiconductor laser) and Z (the Z axle is the slow-axis direction of semiconductor laser) direction; Spacing is the high Lx (the x axle is the quick shaft direction of semiconductor laser) of being of level; Each level semiconductor laser instrument 1 that ladder is heat sink on 5 all has the special reflecting prism 4 of a correspondence, is a total reflection prism, and the plane of incidence or exit facet are processed into the cylinder to light beam slow axis collimation; All special reflecting prisms 4 measure-alike and be directly installed on ladder heat sink on; Reflecting surface is parallel mutually and angled with the output optical axis of semiconductor lasers at different levels, after the light beam irradiates behind the fast axis collimation is to the special reflecting prism 4, the semiconductor laser output optical axis is deflected; The plane of incidence or the exit facet of special reflecting prism 4 are cylinder simultaneously; Accomplish the slow axis collimation of light beam, form be parallel to each other and equally spaced synthetic light beam for the semiconductor laser 1 of different wave length, with the distance or the cylinder radius of special reflecting prism between the special reflecting prism 4 its operating distance that satisfies slow axis collimation requirement is got final product through changing semiconductor laser 1.The minimum value of ladder height difference Lx is that light beam is through shining the width of light beam of the directions X on the special reflecting prism 4 behind the fast axis collimation; So just make laser beam at fast axle, slow axis both direction all by collimation; Hot spot forms the collimated light beam 8 that merges after arranging again, be coupled to output in the optical fiber 7 via focus lamp 6 again.Utilize this structure, the wavelength of laser instrument can be identical also can be different, have very strong dirigibility; The ladder quantity that ladder is heat sink can be chosen according to the power of laser general power and single laser instrument flexibly.Its ladder quantity upper limit depends on that the spot width of single laser instrument behind fast axis collimation, the maximum diameter of hole by the focus lens group of aberration restriction, optical fiber core diameter, fiber numerical aperture, the maximum that ladder is heat sink allow radiating condition etc.
Prior art is compared, and the effect of the utility model is:
The utility model utilizes special reflecting prism 4 to accomplish the optical axis collimation with slow-axis direction of turning back simultaneously, has reduced the device that needs Installation and Debugging, can enhance productivity effectively; The error that is welded of compensates for heat sinks mismachining tolerance and semiconductor laser to a certain extent reduces the accuracy requirement that heat sink processing, laser instrument are welded, and saves production cost.
Description of drawings
Fig. 1 is the synoptic diagram of the utility model embodiment 1;
(a) vertical view, (b) side view, (c) output facula figure,
Fig. 2 is the synoptic diagram of the utility model embodiment 2;
(a) vertical view, (b) side view, (c) output facula figure,
Wherein: 1. semiconductor laser, 2. transition is heat sink, 3. microtrabeculae lens (collimation lens), 4. special reflecting prism, 5. ladder is heat sink, 6. focus lamp, 7. optical fiber, 8. light spot shape synoptic diagram after the shaping.
Embodiment
Below in conjunction with accompanying drawing the utility model is explained in further detail.
Embodiment 1:
As shown in Figure 1, being coupled into an optical fiber with six semiconductor lasers is example, has provided the integrally-built synoptic diagram of the utility model.
With high-precision micropositioning stage and immobilization material with collimation lens; Be microtrabeculae lens 3; Be installed to each the place ahead that has been fixed on the semiconductor laser 1 in the transition heat sink 2 (laser instrument 1 can direct sintering or the heat sink mode of transition be fixed on heat sink on), make laser beam at the quick shaft direction collimation.Calibrate the depth of parallelism and collimation between each light beam through detecting far-field spot in the installation process.
All transition heat sink 2 that install microtrabeculae lens 3 and laser instrument 1 are welded on ladder heat sink 5, laser instrument 1 is connected electrode, it can be that to connect also can be parallel connection that electrode connects.
On each level of ladder heat sink 5, special reflecting prism 4 is installed step by step; The plane of incidence of prism 4 is cylinders; Adjust with high-precision five dimension adjustment racks and suitable clamp clamps special reflecting prism 4; Make the optical axis of semiconductor laser 1 turn back 90 °, and make the slow-axis direction of semiconductor laser 1 reach collimation.In the process of Installation and Debugging special reflecting prism 4; Calibrate the laser beam depth of parallelism each other and the collimation of hot spot of outputs at different levels through detecting far-field spot, can not block the light path of back one-level through the special reflecting prism 4 that detects output power assurance previous stage.
Focus lamp and optical fiber are installed in the light path; Focus lamp and optical fiber can be that mounted in advance coaxial module also can be discrete; The two is adjusted through high-precision five dimension adjustment racks and suitable clamp clamps; Up to obtaining the highest optical fiber output power, the two is fixed with the mode of welding or viscose.So just accomplished the adjustment of light path.
In this structure, adopt optical fiber core diameter 105um～1mm, the optical fiber of numerical aperture 0.1-0.4, optical maser wavelength is from 405nm-2um, and average coupling efficiency is higher than 85%.
Embodiment 2:
As shown in Figure 2, being coupled into an optical fiber with six semiconductor lasers is example, has provided the integrally-built synoptic diagram of the utility model.
With high-precision micropositioning stage and immobilization material with collimation lens; Be microtrabeculae lens 3; Be installed to each the place ahead that has been fixed on the semiconductor laser 1 in the transition heat sink 2 (laser instrument 1 can direct sintering or the heat sink mode of transition be fixed on heat sink on), make laser beam at the quick shaft direction collimation.Calibrate the depth of parallelism and collimation between each light beam through detecting far-field spot in the installation process.
All transition heat sink 2 that install microtrabeculae lens 3 and laser instrument 1 are welded on ladder heat sink 5, laser instrument 1 is connected electrode, it can be that to connect also can be parallel connection that electrode connects.
On each level of ladder heat sink 5, special reflecting prism 4 is installed step by step; The exit facet of prism 4 is cylinders; Adjust with high-precision five dimension adjustment racks and suitable clamp clamps special reflecting prism 4; Make the optical axis of semiconductor laser 1 turn back 90 °, and make the slow-axis direction of semiconductor laser 1 reach collimation.In the process of Installation and Debugging special reflecting prism 4; Calibrate the laser beam depth of parallelism each other and the collimation of hot spot of outputs at different levels through detecting far-field spot, can not block the light path of back one-level through the special reflecting prism 4 that detects output power assurance previous stage.
Focus lamp and optical fiber are installed in the light path; Focus lamp and optical fiber can be that mounted in advance coaxial module also can be discrete; The two is adjusted through high-precision five dimension adjustment racks and suitable clamp clamps; Up to obtaining the highest optical fiber output power, the two is fixed with the mode of welding or viscose.So just accomplished the adjustment of light path.
In this structure, adopt optical fiber core diameter 105um～1mm, the optical fiber of numerical aperture 0.1-0.4, optical maser wavelength is from 405nm-2um, and average coupling efficiency is higher than 85%.
Claims (10)
1. one kind multichannel discrete semiconductor laser coupled gone into the coupled system of simple optical fiber, it is characterized in that comprising multiple path laser, a ladder is heat sink, a condenser lens, a coupled fiber; Said laser instrument is installed on the heat sink ladder plane of said ladder through transition is heat sink, is provided with successively before each said laser instrument with the coaxial fast axis collimation lens, of Laser Output Beam to make Laser Output Beam reflex to the reflecting prism of the said convergent lens plane of incidence with same direction; Each said laser output is to the equivalent optical path of its corresponding reflecting prism exit facet; Be provided with the said coupled fiber coaxial behind the said convergent lens exit facet with it; Wherein, said reflecting prism is a total reflection prism, and the plane of incidence of said total reflection prism or exit facet are the cylinder of a pair of said Laser Output Beam slow axis collimation.
2. coupled system as claimed in claim 1 is characterized in that between the ladder plane at said laser instrument place for being parallel to each other and equally spaced.
3. coupled system as claimed in claim 1 is characterized in that between the ladder plane at said laser instrument place for being parallel to each other and unequal-interval.
4. like claim 1 or 2 or 3 described coupled systems, it is characterized in that said ladder plane is parallel with the PN junction junction plane of laser instrument.
5. coupled system as claimed in claim 2 is characterized in that said spacing minimum value is that Laser Output Beam is through shining the width of light beam of the quick shaft direction on the said reflecting prism behind the fast axis collimation.
6. coupled system as claimed in claim 1 is characterized in that each said laser electrode is parallel connection or series connection.
7. coupled system as claimed in claim 1 is characterized in that parallel mutually and corresponding with it the laser instrument output optical axis of the reflecting surface of each said reflecting prism is angled.
8. coupled system as claimed in claim 7 is characterized in that the angle ranging from 45
0
9. coupled system as claimed in claim 1 is characterized in that said laser instrument is identical wavelength or different wavelength of laser device.
10. coupled system as claimed in claim 1 is characterized in that said fast axis collimation lens is the microtrabeculae lens, or cylindrical mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205345429U CN202383321U (en) | 2011-12-19 | 2011-12-19 | Coupled system for coupling multichannel discrete semiconductor lasers into single fiber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205345429U CN202383321U (en) | 2011-12-19 | 2011-12-19 | Coupled system for coupling multichannel discrete semiconductor lasers into single fiber |
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| CN202383321U true CN202383321U (en) | 2012-08-15 |
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| CN103368066A (en) * | 2013-07-29 | 2013-10-23 | 武汉锐科光纤激光器技术有限责任公司 | Inclined plane type multi-tube semiconductor laser coupling device and method |
| CN103401136A (en) * | 2013-07-29 | 2013-11-20 | 武汉锐科光纤激光器技术有限责任公司 | Optical fiber fixing device coupled with high-power semiconductor laser |
| CN103513427A (en) * | 2013-10-15 | 2014-01-15 | 北京凯普林光电科技有限公司 | Laser producing annular indication light |
| CN104583827A (en) * | 2012-08-29 | 2015-04-29 | 株式会社藤仓 | Light guiding device, method for producing same, and ld module |
| CN105929495A (en) * | 2016-07-11 | 2016-09-07 | 山西傲维光视光电科技有限公司 | Multi-fiber laser light source coupling system |
| CN106997122A (en) * | 2015-11-30 | 2017-08-01 | 株式会社日本显示器 | Light-emitting device and display device |
| US9774171B2 (en) | 2012-12-27 | 2017-09-26 | Fujikura Ltd. | Multiplexer, multiplexing method, and LD module using outside-reflecting double mirrors |
| CN107589499A (en) * | 2017-09-29 | 2018-01-16 | 重庆光遥光电科技有限公司 | More branch semiconductor lasers are coupled into the coupled system of simple optical fiber based on terraced mirror |
| CN110024240A (en) * | 2016-11-25 | 2019-07-16 | 古河电气工业株式会社 | Laser aid and light supply apparatus |
| CN110429475A (en) * | 2019-07-30 | 2019-11-08 | 山东海富光子科技股份有限公司 | A kind of high power mid-infrared light fibre coupling quantum cascaded laser |
| CN110707523A (en) * | 2019-09-18 | 2020-01-17 | 深圳市星汉激光科技有限公司 | Semiconductor laser device |
| US10777965B2 (en) | 2016-09-05 | 2020-09-15 | Furukawa Electric Co., Ltd. | Laser apparatus and light source apparatus |
| CN112769038A (en) * | 2021-01-21 | 2021-05-07 | 武汉锐科光纤激光技术股份有限公司 | Slow axis collimation and space beam combination prism and semiconductor laser |
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- 2011-12-19 CN CN2011205345429U patent/CN202383321U/en not_active Expired - Lifetime
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| CN104583827A (en) * | 2012-08-29 | 2015-04-29 | 株式会社藤仓 | Light guiding device, method for producing same, and ld module |
| US9645389B2 (en) | 2012-08-29 | 2017-05-09 | Fujikura Ltd. | Light guiding device, method for producing same, and LD module |
| US9774171B2 (en) | 2012-12-27 | 2017-09-26 | Fujikura Ltd. | Multiplexer, multiplexing method, and LD module using outside-reflecting double mirrors |
| CN103368066B (en) * | 2013-07-29 | 2015-11-18 | 武汉锐科光纤激光技术股份有限公司 | A kind of ramp type multitube semiconductor laser coupling device and method |
| CN103368066A (en) * | 2013-07-29 | 2013-10-23 | 武汉锐科光纤激光器技术有限责任公司 | Inclined plane type multi-tube semiconductor laser coupling device and method |
| CN103401136A (en) * | 2013-07-29 | 2013-11-20 | 武汉锐科光纤激光器技术有限责任公司 | Optical fiber fixing device coupled with high-power semiconductor laser |
| CN103513427A (en) * | 2013-10-15 | 2014-01-15 | 北京凯普林光电科技有限公司 | Laser producing annular indication light |
| CN106997122A (en) * | 2015-11-30 | 2017-08-01 | 株式会社日本显示器 | Light-emitting device and display device |
| CN105929495A (en) * | 2016-07-11 | 2016-09-07 | 山西傲维光视光电科技有限公司 | Multi-fiber laser light source coupling system |
| US10777965B2 (en) | 2016-09-05 | 2020-09-15 | Furukawa Electric Co., Ltd. | Laser apparatus and light source apparatus |
| CN110024240A (en) * | 2016-11-25 | 2019-07-16 | 古河电气工业株式会社 | Laser aid and light supply apparatus |
| US10985526B2 (en) | 2016-11-25 | 2021-04-20 | Furukawa Electric Co., Ltd. | Laser device and light-source device |
| US11011885B2 (en) | 2016-11-25 | 2021-05-18 | Furukawa Electric Co., Ltd. | Laser device and light-source device |
| CN110024240B (en) * | 2016-11-25 | 2021-10-22 | 古河电气工业株式会社 | Laser device, light source device, and fiber laser |
| CN107589499A (en) * | 2017-09-29 | 2018-01-16 | 重庆光遥光电科技有限公司 | More branch semiconductor lasers are coupled into the coupled system of simple optical fiber based on terraced mirror |
| CN110429475A (en) * | 2019-07-30 | 2019-11-08 | 山东海富光子科技股份有限公司 | A kind of high power mid-infrared light fibre coupling quantum cascaded laser |
| CN110707523A (en) * | 2019-09-18 | 2020-01-17 | 深圳市星汉激光科技有限公司 | Semiconductor laser device |
| CN112769038A (en) * | 2021-01-21 | 2021-05-07 | 武汉锐科光纤激光技术股份有限公司 | Slow axis collimation and space beam combination prism and semiconductor laser |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100070, Beijing, Fengtai District science and Technology Park, Feng Feng Road, No. 4, 6 Patentee after: BWT BEIJING LTD. Address before: 100070, Beijing, Fengtai District science and Technology Park, Feng Feng Road, No. 4, 6 Patentee before: BWT Beijing Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Coupling system for coupling multi-path discrete semiconductor laser to single optical fiber Effective date of registration: 20171219 Granted publication date: 20120815 Pledgee: Beijing good faith financing Company limited by guarantee Pledgor: BWT BEIJING LTD. Registration number: 2017990001099 |
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Date of cancellation: 20190705 Granted publication date: 20120815 Pledgee: Beijing good faith financing Company limited by guarantee Pledgor: BWT BEIJING LTD. Registration number: 2017990001099 |
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Granted publication date: 20120815 |
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| CX01 | Expiry of patent term |