CN104505707A - High-power semiconductor laser beam combining fiber coupling output device and method - Google Patents
High-power semiconductor laser beam combining fiber coupling output device and method Download PDFInfo
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- CN104505707A CN104505707A CN201510004681.3A CN201510004681A CN104505707A CN 104505707 A CN104505707 A CN 104505707A CN 201510004681 A CN201510004681 A CN 201510004681A CN 104505707 A CN104505707 A CN 104505707A
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Abstract
The invention discloses a high-power semiconductor laser beam combining fiber coupling output device and method and relates to the field of semiconductor laser beam combining. The device comprises n groups of laser units and a beam combining unit. Every laser unit is composed of a laser device, a transmission fiber and a collimator, wherein the transmission fiber and the collimator are sequentially arranged on the optical axis of beams transmitted by the laser device; the beam combining unit comprises a beam combining lens group arranged on the optical axis of the beams output by the laser units; combined beams output by the beam combining lens group sequentially penetrates a coupler, a beam combining transmission fiber and a beam combining output collimator on a beam combining optical axis. The method comprises that beams of different wavelengths, which are emitted by the different laser devices, are transmitted through the transmission fibers, collimated and outputted by the collimators, combined through the combining lens group, coupled through the coupler, transmitted through the beam combining transmission fiber and collimated and output by the beam combining output collimator to form combined beams. The high-power semiconductor laser beam combining fiber coupling output device and method solves the problem that an existing semiconductor laser fiber coupling output device cannot achieve high-power coupling output when keeping unchanged in core diameter of fibers.
Description
Technical field
The present invention relates to semiconductor laser and close bundle field, particularly relate to a kind of high-power semiconductor laser and close bundle coupling fiber output device and method.
Background technology
The high efficiency of semiconductor laser, long-life, the advantage such as small size and light weight make it have application prospect widely.But by the restriction of beam quality, semiconductor laser is difficult to as direct light source applications in field power, beam quality and brightness all being had to high request.For this problem, carrying out a series of research about how improving semiconductor laser power, power density and beam quality in the world, having swashed combiner technology and arising at the historic moment.But existing semiconductor laser closes bundle coupling fiber there is a maximum drawback in export technique, namely cannot accomplish to accomplish high-power coupling output under the prerequisite that core diameter is constant.
Summary of the invention
The object of the present invention is to provide a kind of high-power semiconductor laser to close bundle coupling fiber output device and method, thus solve the foregoing problems existed in prior art.
To achieve these goals, the present invention is that a kind of high-power semiconductor laser closes bundle coupling fiber output device, and the technical scheme of employing is as follows:
This device comprises: n group laser cell and a conjunction Shu Danyuan, and described n is more than or equal to 2; Described laser cell comprises: laser and the Transmission Fibers be successively set on the laser beam optical axis of described laser transmitting and collimater; Described conjunction Shu Danyuan comprises: be arranged on the light combination mirror group on the beam optical axis of described laser cell output, and the sharp combiner exported by described light combination mirror group is successively through the coupler on described sharp combiner optical axis, conjunction bundle Transmission Fibers and conjunction bundle output collimator; The minimum number of light combination mirror fewer than the quantity of described laser 1 in described light combination mirror group.
Preferably, the wavelength of the laser beam that the laser in any two described laser cells is launched is inconsistent.
Preferably, the anti-reflection film that the laser beam wavelength described collimater all having laser corresponding thereto to launch is consistent.
Preferably, the core diameter of described conjunction bundle Transmission Fibers is identical with the core diameter of described Transmission Fibers.
Preferably, described light combination mirror group comprises: individual 45 ° of light combination mirrors, the individual 45 ° of light combination mirrors with reflection, transmission function of m with reflection function of p, described p is more than or equal to 0, and described m is more than or equal to 1 and described p+m is more than or equal to 1.
More preferably, what have 45 ° of light combination mirrors of reflection function described in meets total reflection film bundle face is coated with for reflecting incident laser beam.
More preferably, described in have reflection, transmission function 45 ° of light combination mirrors meet total reflection film bundle face is coated with for reflecting incident laser beam, meanwhile, two minute surfaces are all coated with the anti-reflection film needing transmission laser light beam.
The present invention is that a kind of high-power semiconductor laser closes bundle coupling fiber output intent, and the method is specially:
The light beam of the different wave length launched by various lasers is after Transmission Fibers transmission, exported by collimating device collimation, then after light combination mirror combined beam, be coupled into through coupler and close bundle Transmission Fibers, then collimated by conjunction bundle output collimator and export, formed and swash combiner.
Preferably, the reflectance coating in described light combination mirror group, light combination mirror is coated with and/or the applicable wavelengths of transmission film and the consistent wavelength of incident laser beam.
Preferably, the minimum number fewer than the quantity of described laser 1 of light combination mirror in described light combination mirror group.
The invention has the beneficial effects as follows:
The invention solves coupling semiconductor laser with optical fibers and export energy quantitative limitation, improve the maximum energy value that semiconductor optical fibre even summation exports.
Accompanying drawing explanation
Fig. 1 is the structural representation that high-power semiconductor laser described in embodiment 1 closes bundle coupling fiber output device, wherein, 1 represents laser 1, 2 represent laser 2, 3 represent laser 3, 4 represent No. one, Transmission Fibers, 5 represent No. two, Transmission Fibers, 6 represent No. three, Transmission Fibers, 7 represent conjunction bundle Transmission Fibers, 8 represent collimater 1, 9 represent collimater 2, 10 represent collimater 3, 11 represent coupler, 12 represent conjunction bundle output collimator, 45 ° of speculums of 13 expression folded light beams 1, 45 ° of speculums of 14 expression folded light beams 2, 15 represent the 45 ° of mirrors being coated with folded light beam 1 total reflection film and being coated with transmitted light beam 3 anti-reflection film, 16 represent the 45 ° of mirrors being coated with folded light beam 2 total reflection film and being coated with transmission conjunction bundle 1 & 3 anti-reflection film,
Fig. 2 is the schematic diagram that in embodiment 2, two bundles swash combiner; 7 represent conjunction bundle Transmission Fibers, and 11 represent couplers, and 12 expressions are closed and restrainted output collimator, 1-1 represents light beam 1,2-1 represents light beam 2, and 22 represent that closing bundle 1 & 2,20 represents the 45 ° of mirrors being coated with folded light beam 2 total reflection film and being coated with transmitted light beam 1 anti-reflection film;
Fig. 3 is the schematic diagram that in embodiment 3, three beams of laser closes bundle; 3-1 represents light beam 3, and 23 represent the 45 ° of mirrors being coated with folded light beam 3 total reflection film and being coated with transmission conjunction bundle 1 & 2 anti-reflection film, and 24 represent conjunction bundle 1 & 2 & 3;
Fig. 4 is the schematic diagram that in embodiment 3, three beams of laser closes bundle; 25 represent the 45 ° of mirrors being coated with reflection and closing bundle 2 & 3 total reflection film and be coated with transmitted light beam 1 anti-reflection film, 26 represent the 45 ° of mirrors being coated with folded light beam 3 total reflection film and being coated with transmitted light beam 2 anti-reflection film, 27 represent that closing bundle 2 & 3,28 represents conjunction bundle 1 & 2 & 3;
Fig. 5 is the schematic diagram that in embodiment 4, four bundles swash combiner; 4-1 represents light beam 4, and 31 represent the 45 ° of mirrors being coated with folded light beam 4 total reflection film and being coated with transmission conjunction bundle 1 & 2 & 3 anti-reflection film, and 35 represent conjunction bundle 1 & 2 & 3 & 4;
Fig. 6 is the schematic diagram that in embodiment 4, four bundles swash combiner; 50 represent the 45 ° of mirrors being coated with folded light beam 2 total reflection film and being coated with transmitted light beam 1 anti-reflection film, and 51 represent the 45 ° of mirrors being coated with folded light beam 4 total reflection film and being coated with transmitted light beam 3 anti-reflection film; 52 represent that being coated with reflection closes bundle 3 & 4 total reflection film and be coated with 45 ° of mirrors that bundle 1 & 2 anti-reflection film is closed in transmission; 53 represent that closing bundle 1 & 2,54 represents that closing bundle 3 & 4,55 expression closes bundle 1 & 2 & 3 & 4;
Fig. 7 is the schematic diagram that in embodiment 5, five bundles swash combiner; 5-1 represents light beam 5,60 represent the 45 ° of mirrors being coated with reflection and closing bundle 2 & 5 total reflection film and be coated with transmitted light beam 1 anti-reflection film, and 61 represent that being coated with reflection closes bundle 3 & 4 total reflection film and be coated with 45 ° of mirrors that bundle 1 & 2 & 5 anti-reflection film is closed in transmission; 62 represent that being coated with reflection closes bundle 3 & 4 total reflection film and be coated with 45 ° of mirrors that bundle 1 & 2 anti-reflection film is closed in transmission; 63 represent the 45 ° of mirrors being coated with folded light beam 5 total reflection film and being coated with transmitted light beam 2 anti-reflection film; 64 represent that closing bundle 2 & 5,65 represents that closing bundle 3 & 4,66 represents that closing bundle 1 & 2 & 5,67 represents 1 & 2 & 3 & 4 & 5.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the present invention is further elaborated.Should be appreciated that embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment 1
With reference to Fig. 1, the present embodiment is that a kind of high-power semiconductor laser closes bundle coupling fiber output device, and this device comprises: 3 groups of laser cells and a conjunction Shu Danyuan; Described laser cell comprises: laser and the Transmission Fibers be successively set on the laser beam optical axis of described laser transmitting and collimater; Described conjunction Shu Danyuan comprises: be arranged on the light combination mirror group on the beam optical axis of described laser cell output, and the sharp combiner exported by described light combination mirror group is successively through the coupler on described sharp combiner optical axis, conjunction bundle Transmission Fibers and conjunction bundle output collimator.
In the present embodiment, the wavelength of the laser beam that the laser in any two described laser cells is launched is inconsistent, what namely laser 1 exported is the laser beam 1 of 915nm, and laser beam 1 optical axis that laser 1 is launched arranges the 45 ° of speculums 13 being coated with 915nm laser 45 ° of incident total reflection films; What laser 2 exported is the laser beam 2 of 351nm, and laser beam 2 optical axis that laser 2 is launched arranges the 45 ° of speculums 14 being coated with 351nm laser 45 ° of incident total reflection films; What laser 3 exported is the laser beam 3 of 976nm, on laser beam 3 optical axis that laser 3 is launched, setting is coated with 976nm anti-reflection film and meets the 45 ° of light combination mirrors 15 minute surface of light beam 1 being coated with 351nm laser 45 ° of incident total reflection films, and on laser beam 3 optical axis that laser 3 is launched, setting is coated with 351nm, 976nm anti-reflection film and meets the 45 ° of light combination mirrors 16 minute surface of light beam 2 being coated with 915nm, 976nm anti-reflection film and 351nm laser 45 ° of incident total reflection films.
In the present embodiment, the anti-reflection film that the optical maser wavelength described collimater all having laser corresponding thereto to launch is identical.Namely collimate in the collimater of wavelength that output laser 1 sends and be coated with 351nm anti-reflection film, the collimater of the wavelength that collimation output laser 2 sends is coated with 915nm anti-reflection film, the collimater of the wavelength that collimation output laser 3 sends is coated with 976nm anti-reflection film.
In the present embodiment, the light combination mirror arranged before described coupler, described light combination mirror is coated with the 915nm total reflection film of folded light beam 2, is coated with 351nm anti-reflection film and the 976nm anti-reflection film of transmitted light beam 1 and light beam 3.
In the present embodiment, the Transmission Fibers in described laser cell is with described to close the core diameter restrainting Transmission Fibers identical; Wherein, the Transmission Fibers arranged between described laser 1 and described collimater 8 is No. one, Transmission Fibers, No. two, Transmission Fibers is set between described laser 2 and described collimater 9, arrange No. three, Transmission Fibers between described laser 3 and described collimater 10, namely No. one, described Transmission Fibers, No. two, described Transmission Fibers and No. three, described Transmission Fibers are with described to close the core diameter restrainting Transmission Fibers identical.
Embodiment 2
The present embodiment is that a kind of high-power semiconductor laser closes bundle coupling fiber output intent, and the method is specially:
The light beam of the different wave length launched by various lasers is after Transmission Fibers transmission, exported by collimating device collimation, then after light combination mirror combined beam, be coupled into through coupler and close bundle Transmission Fibers, then collimated by conjunction bundle output collimator and export, formed and swash combiner.
The difference that the high-power semiconductor laser that method described in the present embodiment is used closes bundle coupling fiber output device and embodiment 1 is, the number of described laser cell is 2, the laser beam axis that first laser cell exports is vertical with the laser beam axis that the second laser cell exports, there are two light combination mirrors with folded light beam 1, transmitted light beam 2 in described light combination mirror group, are high-power semiconductor laser and close bundle coupling fiber output device.
With reference to Fig. 2, two bundle laser beams close the schematic diagram of bundle, high-power semiconductor laser closes bundle coupling fiber output intent: for the laser that two Output of laser wavelength are different, label is laser 1 and laser 2, as shown in Figure 2, exporting label is light beam 1 and light beam 2, the laser beam axis that first laser cell exports is vertical with the laser beam axis that the second laser cell exports, place a slice two sides to be coated with light beam 1 be 45 ° of high permeabilities in the position that light beam 1 and light beam 2 intersect, meeting that light beam 2 one side is coated with laser beam 2 is the eyeglass of 45 ° of high reverse--bias retes, label is eyeglass 1 & 2, the angle that two bundle laser incide eyeglass 1 & 2 is all 45 °, by regulating the orientation of the collimater be oppositely arranged with laser 2, the angle of angle and eyeglass 1 & 2, namely can by two bundle Laser synthesizing beam of laser, be labeled as light beam 1 & 2.
Embodiment 3
The difference of the present embodiment and embodiment 2 is, the number of described laser cell is 3, and described light combination mirror group comprises two different light combination mirrors with reflection, transmission, is high-power semiconductor laser and closes bundle coupling fiber output device.
Wherein, described light combination mirror be set to following two kinds of modes:
Adopt method one as described in Figure 3, described light combination mirror comprises: 45 ° of light combination mirrors 20 of folded light beam 2, transmitted light beam 1, and folded light beam 3, transmission close 45 ° of light combination mirrors 23 of bundle 1 & 2.Wherein, the wavelength of light beam 3 is different from laser beam 1 and light beam 2, as shown in Figure 3, at light beam 3 with close position that bundle 1 & 2 intersects and place a slice two sides to be coated with light beam 1 & 2 be 45 ° of high permeabilities, meeting that light beam 3 one side is coated with light beam 3 is the eyeglass 23 of 45 ° of high reverse--bias retes, the angle that two bundle laser incide eyeglass 1 & 2 & 3 is all 45 °, by regulating the orientation of the collimater corresponding with laser 3, angle, and the angle of eyeglass 1 & 2 & 3, namely can by two bundle Laser synthesizing beam of laser, be and close light beams 1 & 2 & 3.
Or employing method two as shown in Figure 4, described light combination mirror comprises: 45 ° of light combination mirrors 25 of bundle 2 & 3, transmitted light beam 1 are closed in reflection, 45 ° of light combination mirrors 26 of folded light beam 3, transmitted light beam 2.Adopt the method for light beam 1 and the 2-in-1 bundle of light beam described in embodiment 2, light beam 1 & 2 and light beam 3 are closed Shu Chengwei light beam 1 & 2 & 3, namely according to the method for light beam 1 and light beam 2-in-1 bundle, light beam 3 and the two-beam any light beam closed in binding structure are carried out conjunction to restraint, so namely obtain light beam 1 & 2 & 3.
The sequencing closing bundle is in the present embodiment determined according to the wavelength of each light beam and eyeglass parameters of film.
Embodiment 4
The difference of the present embodiment and embodiment 2 is, described laser cell is 4, and described light combination mirror group comprises three different light combination mirrors with reflection, transmission, is high-power semiconductor laser and closes bundle coupling fiber output device.
Wherein, three described light combination mirrors be set to following two kinds of modes:
Adopt method one as shown in Figure 5, described light combination mirror comprises: 45 ° of light combination mirrors 25 of bundle 2 & 3, transmitted light beam 1 are closed in reflection, 45 ° of light combination mirrors 26 of folded light beam 3, transmitted light beam 2, folded light beam 4, transmission close 45 ° of light combination mirrors 31 of bundle 1 & 2 & 3.Light beam 1 & 2 & 3 and light beam 4 are closed Shu Chengwei light beam 1 & 2 & 3 & 4 by the method for available light beam 1 and the 2-in-1 bundle of light beam, light beam 4 is carried out conjunction bundle with light beam any in the photosynthetic binding structure of three beams by the method namely according to light beam 1 and the 2-in-1 bundle of light beam, can obtain light beam 1 & 2 & 3 & 4 like this.
Or employing method two as shown in Figure 6, described light combination mirror comprises: 45 ° of light combination mirrors 50 of folded light beam 2, transmitted light beam 1, folded light beam 4, transmission close 45 ° of light combination mirrors 51 of bundle 3 & 4,45 ° of light combination mirrors 52 that bundle 3 & 4 is closed in reflection, bundle 1 & 2 is closed in transmission.First light beam 3 and light beam 4 can be closed bundle according to the method for light beam 1 and the 2-in-1 bundle of light beam, the light beam label closed after bundle is light beam 3 & 4, light beam 1 & 2 and light beam 3 & 4 is synthesized light beam by the method repeating light beam 1 and the 2-in-1 bundle of light beam again, and label is light beam 1 & 2 & 3 & 4.
The sequencing closing bundle is in the present embodiment determined according to the wavelength of each light beam and eyeglass parameters of film.
Embodiment 5
The difference of embodiment and embodiment 2 is, described laser cell is 5, and described light combination mirror group comprises four different light combination mirrors with reflection, transmission, is high-power semiconductor laser and closes bundle coupling fiber output device.
Wherein, the setting of 4 described 45 ° of diaphotoscopes and light combination mirror can in such a way:
With reference to Fig. 7, described light combination mirror comprises: 45 ° of light combination mirrors 60 of bundle 2 & 5, transmitted light beam 1 are closed in reflection, 45 ° of light combination mirrors 61 that bundle 3 & 4 is closed in reflection, bundle 1 & 2 & 5 is closed in transmission, 45 ° of light combination mirrors 62 of folded light beam 4, transmitted light beam 3,45 ° of light combination mirrors 63 of folded light beam 5, transmitted light beam 2.Light beam 5 is carried out conjunction bundle with any light beam in four bundle combiner structures by the method according to light beam 1 and the 2-in-1 bundle of light beam, light beam 1 & 2 & 3 & 4 & 5 can be obtained like this, as those skilled in the art know, those skilled in the art can according to above-mentioned conjunction Shu Fangfa by the light beam of any amount synthesis light beam.
The sequencing closing bundle is in the present embodiment determined according to the wavelength of each light beam and eyeglass parameters of film.
As those skilled in the art know, after completing the operation of conjunction bundle by the conjunction Shu Fangfa described in embodiment 2 to embodiment 5, the laser after conjunction bundle is coupled in optical fiber by coupling device and is exported by collimater again.It is identical with the optical maser wavelength quantity through its transmission or reflection that all eyeglasses described in embodiment 2 to embodiment 5 are coated with rete kind quantity.
By adopting technique scheme disclosed by the invention, obtain effect useful as follows:
The invention solves coupling semiconductor laser with optical fibers and export energy quantitative limitation, improve the maximum energy value that semiconductor optical fibre even summation exports.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should look protection scope of the present invention.
Claims (10)
1. high-power semiconductor laser closes a bundle coupling fiber output device, and it is characterized in that, this device comprises: n group laser cell and a conjunction Shu Danyuan, and described n is more than or equal to 2;
Described laser cell comprises: laser and the Transmission Fibers be successively set on the laser beam optical axis of described laser transmitting and collimater;
Described conjunction Shu Danyuan comprises: be arranged on the light combination mirror group on the beam optical axis of described laser cell output, and the sharp combiner exported by described light combination mirror group is successively through the coupler on described sharp combiner optical axis, conjunction bundle Transmission Fibers and conjunction bundle output collimator;
The minimum number of light combination mirror fewer than the quantity of described laser 1 in described light combination mirror group.
2. high-power semiconductor laser closes bundle coupling fiber output device according to claim 1, it is characterized in that, the wavelength of the laser beam that the laser in any two described laser cells is launched is inconsistent.
3. high-power semiconductor laser closes bundle coupling fiber output device according to claim 1, it is characterized in that, the anti-reflection film that the laser beam wavelength that described collimater all has laser corresponding thereto to launch is consistent.
4. high-power semiconductor laser closes bundle coupling fiber output device according to claim 1, it is characterized in that, the core diameter of described conjunction bundle Transmission Fibers is identical with the core diameter of described Transmission Fibers.
5. high-power semiconductor laser closes bundle coupling fiber output device according to claim 1, it is characterized in that, described light combination mirror group comprises: individual 45 ° of light combination mirrors, the individual 45 ° of light combination mirrors with reflection, transmission function of m with reflection function of p, described p is more than or equal to 0, and described m is more than or equal to 1 and described p+m is more than or equal to 1.
6. high-power semiconductor laser closes bundle coupling fiber output device according to claim 5, it is characterized in that, described in there are 45 ° of light combination mirrors of reflection function meet total reflection film bundle face is coated with for reflecting incident laser beam.
7. high-power semiconductor laser closes bundle coupling fiber output device according to claim 5, it is characterized in that, described have reflection, transmission function 45 ° of light combination mirrors meet total reflection film bundle face is coated with for reflecting incident laser beam, meanwhile, two minute surfaces are all coated with the anti-reflection film needing transmission laser light beam.
8. a high-power semiconductor laser closes bundle coupling fiber output intent, it is characterized in that, the high-power semiconductor laser closing bundle coupling fiber output device based on high-power semiconductor laser as described in claim 1-7 any one claim closes bundle coupling fiber output intent, and the method is specially:
The light beam of the different wave length launched by various lasers is after Transmission Fibers transmission, exported by collimating device collimation, then after light combination mirror combined beam, be coupled into through coupler and close bundle Transmission Fibers, then collimated by conjunction bundle output collimator and export, formed and swash combiner.
9. high-power semiconductor laser closes bundle coupling fiber output intent according to claim 8, it is characterized in that, the reflectance coating in described light combination mirror group, light combination mirror is coated with and/or the applicable wavelengths of transmission film and the consistent wavelength of incident laser beam.
10. high-power semiconductor laser closes bundle coupling fiber output intent according to claim 8, it is characterized in that, the minimum number of light combination mirror fewer than the quantity of described laser 1 in described light combination mirror group.
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| CN201510004681.3A CN104505707A (en) | 2015-01-06 | 2015-01-06 | High-power semiconductor laser beam combining fiber coupling output device and method |
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| CN201510004681.3A CN104505707A (en) | 2015-01-06 | 2015-01-06 | High-power semiconductor laser beam combining fiber coupling output device and method |
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Cited By (3)
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| CN105846308A (en) * | 2016-05-31 | 2016-08-10 | 南京理工大学 | Spectrum synthesis device and method based on 45-degree incident dichroscope |
| CN107104356A (en) * | 2017-06-28 | 2017-08-29 | 青岛镭创光电技术有限公司 | Dual laser |
| CN110247293A (en) * | 2019-07-08 | 2019-09-17 | 桂林理工大学 | A kind of output of laser space and optical fiber output beam merging apparatus |
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