CN103424868A - Laser coupling unit, laser coupling module and laser light source module - Google Patents
Laser coupling unit, laser coupling module and laser light source module Download PDFInfo
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- CN103424868A CN103424868A CN2012101550796A CN201210155079A CN103424868A CN 103424868 A CN103424868 A CN 103424868A CN 2012101550796 A CN2012101550796 A CN 2012101550796A CN 201210155079 A CN201210155079 A CN 201210155079A CN 103424868 A CN103424868 A CN 103424868A
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Abstract
The invention discloses a laser coupling unit, a laser coupling module and a laser light source module, and belongs to the optics field. The unit comprises a plurality of laser devices, a plurality of collimating lenses, a light beam folding element, a focusing lens and an optical fiber in a sequential arranged mode. The laser devices are divided into the N laser devices and the M laser devices according to an arrangement mode, lasers emitted by the N laser devices are collimated through the respective collimating lenses, focused through the focusing lens and coupled in the optical fiber for outputting, lasers emitted by the M laser devices are collimated through the respective collimating lenses, folded through the light beam folding element, further focused through the focusing lens and coupled in the optical fiber for outputting, and the module comprises a laser coupling module. The embodiment achieves high-brightness high-power laser outputting and therefore is especially suitable for a display-oriented application and other applications. In addition, the laser coupling unit has the advantage of being low in cost.
Description
Technical field
The present invention relates to optical field, particularly a kind of laser coupled unit, module and LASER Light Source module.
Background technology
At existing laser display or other, need, in the occasion of high power laser light output, usually to adopt the semiconductor laser of coupling fiber as light source.But, due to the angle of divergence of the outgoing beam quick shaft direction of the semiconductor laser angle of divergence much larger than slow-axis direction, the beam collimation difficulty is large, therefore be difficult to obtain higher optical coupling efficiency.And the Output optical power of single semiconductor laser is lower, therefore independent semiconductor laser can not meet the requirement of laser display technology to high power laser sources.Usually overcome in the following way the problems referred to above for this reason.
Mode one
Adopting spatially assembles a branch of by many output optical fibres of a plurality of independently semiconductor laser optical fiber coupling modules, mode by common fiber-optic output output, specifically as shown in Figure 1, this LASER Light Source module comprises a plurality of laser instruments 1 ', a plurality of collimation lenses 2 ', a plurality of condenser lenses 4 ', many optical fiber 5 ' and a buncher 5 ', wherein, a plurality of laser instruments 1 ', a plurality of collimation lenses 2 ', a plurality of condenser lenses 4 ' and many optical fiber 5 ' are corresponding one by one, the light of each laser instrument 1 ' emission collimates through collimation lens 2 ' separately, again after each GRIN Lens 3 ' focuses on, be coupled in optical fiber 4 ' input end face separately, the multifiber 4 ' that last a plurality of laser instrument 1 ' is corresponding is exported by buncher 5 ' boundling.In this LASER Light Source module, each laser instrument 1 ' is all to having collimation lens 2 ' separately, condenser lens 3 ' separately and optical fiber 4 ' separately, therefore coupling process complexity, particularly for high-power output, usually need hundreds of optical-fiber bundlings, make many close the bundle optical fiber processing and install very complicated; It is very large that the output terminal simultaneously formed due to multifiber is exported cross section, and output brightness is subject to being difficult to improve, and makes the volume of light source module large, and integrated level is not high, so the high brightness applications aspect of laser is very limited.
Mode two
Employing is after the outgoing beam of a plurality of luminous points on semiconductor laser array collimation, in the mode of shaping or spatial arrangement, makes after the Optical Parametric scalar product of balance light beam fast and slow axis to focus on to be coupled into optical fiber.In this mode, not only semiconductor laser array is with high costs, and require the precision of the devices such as collimation lens, fast and slow axis adjustment high, when semiconductor array is worked in addition, heat flow density is high, very harsh to the heat radiation requirement, so this mode is not suitable for the applications such as demonstration.
Mode three
By after a plurality of independently semiconductor laser beam collimations, by assembled arrangement on space, the light beam after making to combine, through shaping and output optical fibre Optical Parametric scalar product coupling, can be coupled in an optical fiber and export.Each semiconductor laser in this mode needs to adopt independently fast axle and slow axis collimation lens, usually adopt complicated ladder lens structure when combination, not only cause element to use many, the assembly technology complexity, and because each luminous beam spacing is large, be difficult to realize more semiconductor laser combination, be generally less than ten, make the coupling output power be restricted.
Summary of the invention
In order to overcome the defect of above-mentioned prior art, the embodiment of the present invention provides a kind of laser coupled unit, module and LASER Light Source module, can realize high brightness, high-power Laser output, and can be towards application such as demonstrations.Described technical scheme is as follows:
A kind of laser coupled unit, comprise a plurality of laser instruments that arrange in turn, a plurality of collimation lenses, the light beam element of turning back, a focus lens group and an optical fiber, described a plurality of laser instrument and described a plurality of collimation lens are complementary, described a plurality of laser instrument shares a described focus lens group and a described optical fiber, described a plurality of laser instrument is divided into N laser instrument and M laser instrument according to arrangement mode, wherein, the laser that a described N laser instrument is launched is by collimation lens collimation separately, through a described focus lens group, focus on, be coupled into described optical fiber output, the collimation lens collimation of the laser that a described M laser instrument is launched by separately, turn back through the described light beam element of turning back, then focus on through a described focus lens group, is coupled into described optical fiber output.
Particularly, as preferably, the described light beam element of turning back is turn back prism or catoptron group of light beam.
Particularly, the light of described a plurality of laser instrument emissions is ruddiness or blue light.
Particularly, described a plurality of laser instrument all adopts TO encapsulation, C encapsulation or the encapsulation of F type.
Particularly, be that at right angle setting or level are installed during described laser coupled cellular installation.
Particularly, as preferably, a described N laser instrument is three laser instruments, and a described M laser instrument is three laser instruments.
The embodiment of the present invention also provides a kind of laser coupled module, and described module comprises described laser coupled unit, and described laser coupled unit is a plurality of, and the optical wavelength of a plurality of laser coupled unit output is identical or different.
The embodiment of the present invention also provides a kind of LASER Light Source module, and described module comprises described laser coupled module, green (light) laser and power panel;
The light of described laser coupled module output comprises Red and blue light;
Described green (light) laser transmitting green light;
Described power panel is described laser coupled module and the power supply of described green (light) laser.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is: compared to existing technology, the embodiment of the present invention adopts a plurality of independently laser instruments, and through collimation lens shaping outgoing beam separately, wherein the part laser instrument reduces the luminous gap between laser instrument through the light beam element of turning back, then by the convergent lens group, beam combination is focused on, be coupled to transmission in simple optical fiber, thereby realize high brightness, high-power Laser output, so be particularly suitable for towards showing, process the aspects such as processing aspect, light-pumped solid state laser aspect and medical use.In addition, the laser coupled unit that the embodiment of the present invention provides simply makes compact conformation, each laser instrument only need a collimation lens because light beam combines, and without complicated beam shaping device, therefore with low cost.
The accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, in below describing embodiment, the accompanying drawing of required use is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of the LASER Light Source module that provides of prior art;
In Fig. 1, each symbol means that implication is as follows: 1 ' laser instrument, 2 ' collimation lens, 3 ' condenser lens, 4 ' optical fiber, 5 ' buncher;
Fig. 2 is the structural representation of the laser coupled unit that provides of the embodiment of the present invention;
Fig. 3 is the structural representation of the laser coupled module that provides of the embodiment of the present invention;
Fig. 4 is the integrated schematic diagram of LASER Light Source module that the embodiment of the present invention provides.
In Fig. 2-Fig. 4, each symbol means that implication is as follows:
1 laser instrument, a 1A N laser instrument, a 1B M laser instrument,
2 collimation lenses,
The 3 light beams element of turning back,
4 focus lens group,
5 optical fiber,
10A red laser coupling unit, 10B blue laser coupling unit,
100 laser coupled modules, the laser coupled module of 100A dual wavelength,
20 green (light) lasers,
30 power panels,
40 heat sinks,
1000 LASER Light Source modules.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
As shown in Figure 2, a kind of laser coupled unit that the embodiment of the present invention provides, comprise a plurality of laser instruments 1 that arrange in turn, a plurality of collimation lenses 2, the light beam element 3 of turning back, a focus lens group 4 and an optical fiber 5, described a plurality of laser instrument 1 is complementary with described a plurality of collimation lenses 2, described a plurality of laser instrument 1 shares a described focus lens group 4 and a described optical fiber 5, described a plurality of laser instrument 1 is divided into N laser instrument 1A and M laser instrument 1B according to the path of laser process, wherein, described N the laser that laser instrument 1A launches is by collimation lens 2 collimations separately, through a described focus lens group 4, focus on, be coupled into a described optical fiber 5 outputs, described M laser that laser instrument 1B launches is by collimation lens 2 collimations separately, turns back through the described light beam element 3 of turning back, then focuses on through a described focus lens group 4, is coupled into a described optical fiber 5 outputs.
As shown in Figure 2, the laser of N the laser instrument 1A emission in the described a plurality of laser instruments 1 of the embodiment of the present invention directly enters focus lens group 4 after by collimation lens 2 collimations separately, the laser of all the other M laser instrument 1B emission incides light beam after by collimation lens 2 collimations separately turns back on element 3, turn back after element 3 is turned back the Laser emission direction of M laser instrument 1B emission and enter focus lens group 4 by light beam, all laser beam that focus lens group 4 will incide on it focus on, and the laser beam after focusing is by optical fiber 5 outputs.Wherein, the light beam sent due to each laser instrument 1 is parallel, when arranging, 1 of a plurality of laser instrument have certain distance, therefore also there is certain distance between a plurality of light beams, the laser of M laser instrument 1B emission incides light beam after by collimation lens 2 collimations separately turns back on element 3, by light beam, turn back after element 3 turns back the light beam of M laser instrument 1B, make the luminous gap of 1 of a plurality of laser instrument greatly reduce, can make in the aperture of a plurality of laser instruments while coupled into optical fibres, and then realize high brightness, high-power Laser output, so be particularly suitable for towards demonstration, processing processing aspect, the aspects such as light-pumped solid state laser aspect and medical use.In addition, the laser coupled unit that the embodiment of the present invention provides simply makes compact conformation because light beam combines, collimation lens 2 of 1 need of each laser instrument, and without complicated beam shaping device, therefore with low cost.
Particularly, the described light beam element 3 of turning back can be the light beam prism of turning back, and can also be the catoptron group.
Particularly, the light of described a plurality of laser instrument 1 emission is ruddiness or blue light.
Certainly the light that it will be understood by those skilled in the art that described a plurality of laser instrument 1 emission can also be the light of other wavelength.
Particularly, described a plurality of laser instrument 1 all adopts TO encapsulation, C encapsulation or the encapsulation of F type.
Particularly, can at right angle setting when described laser coupled unit is installed, also can level install.
Shown in Figure 2, so-called at right angle setting refers to vertical being arranged on base plate in order of each element in the laser coupled unit, with order from top to bottom, an optical fiber 5, focus lens group 4, a light beam turn back element 3, a plurality of collimation lens 2 and a plurality of laser instrument 1 is installed successively.
So-called level is installed and is referred in the laser coupled unit each element being arranged on base plate of level in order, is as shown in Figure 2 the laser coupled unit that level is installed.
Particularly, as preferably, the numerical aperture that in the embodiment of the present invention, the core diameter of optical fiber 5 is 400 μ m, optical fiber 5 is 0.22.Wherein, because the light that incides optical fiber 5 end faces can not all be transmitted by optical fiber 5, just the incident light in certain angular range just can, and " numerical aperture " that the sine value of this angle a just is called optical fiber 5 is (NA=sina).More specifically, for the laser beam of sending that makes laser instrument 1 all can be coupled in the optical fiber 5 that numerical aperture that core diameter is 400 μ m, optical fiber 5 is 0.22, described N laser instrument 1A is preferably three laser instruments, and described M laser instrument 1B is preferably three laser instruments.
Certainly the light that makes the plurality of laser instrument 1 send it will be understood by those skilled in the art that in the embodiment of the present invention, the value of M and N can be arbitrarily, as long as finally can be coupled in corresponding optical fiber 5.Certainly the optimum condition that it will be understood by those skilled in the art that the laser instrument arrangement is that the aligned gaps between a plurality of laser instruments is even.
Because the laser power of simple optical fiber output is limited, can't satisfy the demand high-power output or need the occasion that level of integrated system is high, volume is little at some, the present embodiment is combined described laser coupled unit with many optical fiber boundling coupling technique, to address the above problem.
Shown in Figure 3, a kind of laser coupled module 100 that the embodiment of the present invention also provides, described module comprises above-mentioned laser coupled unit (referring to Fig. 2), described laser coupled unit (referring to Fig. 2) is a plurality of, the optical wavelength of a plurality of laser coupled unit (referring to Fig. 2) output can be identical, also can be not identical.Wherein, described laser coupled unit is identical with the cellular construction of laser coupled shown in Fig. 2, and the present embodiment repeats no more for this laser coupled cellular construction.
Referring to Fig. 3, particularly, in the scene of needs list wavelength, the laser coupled module is comprised of the laser coupled unit of a plurality of single wavelength, that is to say that the optical wavelength of a plurality of laser coupled unit output is identical; Needing the scene of multi-wavelength, the laser coupled module is comprised of the laser coupled unit of at least two wavelength, that is to say in a plurality of laser coupled unit the optical wavelength difference that has two laser coupled unit outputs at least.
Particularly, as shown in Figure 3, in the present embodiment, the laser coupled module forms (also referred to as the laser coupled module of dual wavelength) by the laser coupled unit of two kinds of wavelength, specifically comprise two red laser coupling unit 10A and a blue laser coupling unit 10B, wherein, blue laser in red laser in two red laser coupling unit 10A and blue laser coupling unit 10B is arranged on the same heat sink plate, be that red laser coupling unit 10A and blue laser coupling unit 10B are integrated design, cooling by heat sink plate, add heat insulation layer on the face of fitting with other element on heat sink plate, reduce heat load.
Laser coupled module shown in Fig. 3 laser coupled unit set as shown in Figure 2 forms, because the laser coupled unit shown in Fig. 2 adopts a plurality of independently laser instruments, and through collimation lens 2 shaping outgoing beams separately, wherein the part laser instrument reduces the luminous gap between laser instrument through the light beam element 3 of turning back, then by the convergent lens group, beam combination is focused on, be coupled to transmission in simple optical fiber, thereby realize high brightness, high-power Laser output; And light beam combination in described laser coupled unit is simple, adopt single collimation lens 2 and without complicated beam shaping device, compact conformation, with low cost, above-mentioned a plurality of laser coupled unit combination during as a laser coupled module application, not only can be obtained to high power laser output, also make level of integrated system increase, volume reduce simultaneously, cost has solved available technology adopting multifiber and a defect that optical fiber brings simultaneously, and practical value is very high.
The embodiment of the present invention also provides a kind of LASER Light Source module 1000, comprises described laser coupled module, green (light) laser, and power panel 30, and the light of described laser coupled module output comprises Red and blue light; Described green (light) laser transmitting green light; Described power panel is described laser coupled module and the power supply of described green (light) laser.Wherein, described laser coupled module is identical with the module of laser coupled described in Fig. 3 100 structures, and the present embodiment repeats no more for this laser coupled modular structure.
Particularly, as shown in Figure 4, the LASER Light Source module 1000 that the embodiment of the present invention provides comprises laser coupled module 100A and the green (light) laser 20 of dual wavelength, wherein, green (light) laser 20 is arranged at the laser coupled module 100A side of dual wavelength, power panel 30 is arranged on laser coupled module 100A and green (light) laser 20 sides, for laser coupled module 100A and green (light) laser 20 are powered jointly.
Fig. 4 integral body is depicted as a plurality of LASER Light Source modules 1000 and integrates, and a plurality of LASER Light Source modules 1000 share a heat sink 40, and the present embodiment be take 15 LASER Light Source modules and integrated as example and describe.
Because the laser coupled unit in the laser coupled module 100 shown in Fig. 3 adopts a plurality of independently laser instruments, and through collimation lens 2 shaping outgoing beams separately, wherein the part laser instrument reduces the luminous gap between laser instrument through the light beam element 3 of turning back, then by the convergent lens group, beam combination is focused on, be coupled to transmission in simple optical fiber, thereby realize high brightness, high-power Laser output, so be particularly suitable for towards showing, process the aspects such as processing aspect, light-pumped solid state laser aspect and medical use.In addition, because the laser coupled unit simply makes compact conformation, each laser instrument only need a collimation lens 2 because light beam combines, and without complicated beam shaping device, therefore with low cost.Due to the above-mentioned advantage of laser coupled unit, this laser coupled unit set is become to the laser coupled module, and then when the laser coupled module collection is become to the LASER Light Source module, the overall volume of this LASER Light Source module is significantly dwindled.Concrete, when in the laser coupled unit, N and M are 3, the overall volume of this LASER Light Source module is 600*500*300mm, than like product, significantly reduces; And the LASER Light Source module can be installed with the projector one, solved that original long optical fibers (20-30m) is expensive, poor reliability, and the high problem of loss.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. a laser coupled unit, it is characterized in that, comprise a plurality of laser instruments that arrange in turn, a plurality of collimation lenses, the light beam element of turning back, a focus lens group and an optical fiber, described a plurality of laser instrument and described a plurality of collimation lens are complementary, described a plurality of laser instrument shares a described focus lens group and a described optical fiber, described a plurality of laser instrument is divided into N laser instrument and M laser instrument according to arrangement mode, wherein, the laser that a described N laser instrument is launched is by collimation lens collimation separately, through a described focus lens group, focus on, be coupled into described optical fiber output, the collimation lens collimation of the laser that a described M laser instrument is launched by separately, turn back through the described light beam element of turning back, then focus on through a described focus lens group, is coupled into described optical fiber output.
2. laser coupled as claimed in claim 1 unit, is characterized in that, the described light beam element of turning back is turn back prism or catoptron group of light beam.
3. laser coupled as claimed in claim 1 unit, is characterized in that, the light of described a plurality of laser instrument emissions is ruddiness or blue light.
4. laser coupled as claimed in claim 1 unit, is characterized in that, described a plurality of laser instruments all adopt TO encapsulation, C encapsulation or the encapsulation of F type.
5. laser coupled as claimed in claim 1 unit, is characterized in that, during described laser coupled cellular installation, is that at right angle setting or level are installed.
6. laser coupled as claimed in claim 1 unit, is characterized in that, a described N laser instrument is three laser instruments, and a described M laser instrument is three laser instruments.
7. a laser coupled module, is characterized in that, described module comprises the described laser coupled of claim 1-6 any one claim unit, and described laser coupled unit is a plurality of, and the optical wavelength of a plurality of laser coupled unit output is identical or different.
8. a LASER Light Source module, is characterized in that, described module comprises laser coupled module claimed in claim 7, green (light) laser and power panel;
The light of described laser coupled module output comprises Red and blue light;
Described green (light) laser transmitting green light;
Described power panel is described laser coupled module and the power supply of described green (light) laser.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101550796A CN103424868A (en) | 2012-05-17 | 2012-05-17 | Laser coupling unit, laser coupling module and laser light source module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101550796A CN103424868A (en) | 2012-05-17 | 2012-05-17 | Laser coupling unit, laser coupling module and laser light source module |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730658A (en) * | 2013-12-20 | 2015-06-24 | 福州高意通讯有限公司 | Coupling optical fiber array fixing structure and semiconductor laser unit array |
| CN111381379A (en) * | 2018-12-29 | 2020-07-07 | Tcl集团股份有限公司 | Beam shaping device and projection equipment |
| CN112539917A (en) * | 2020-12-03 | 2021-03-23 | 中国工程物理研究院激光聚变研究中心 | Experimental device and method for rock breaking by combining short pulse laser and continuous laser |
-
2012
- 2012-05-17 CN CN2012101550796A patent/CN103424868A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104730658A (en) * | 2013-12-20 | 2015-06-24 | 福州高意通讯有限公司 | Coupling optical fiber array fixing structure and semiconductor laser unit array |
| CN104730658B (en) * | 2013-12-20 | 2016-08-17 | 福州高意通讯有限公司 | A kind of coupling fiber array fixed structure and semiconductor laser array |
| CN111381379A (en) * | 2018-12-29 | 2020-07-07 | Tcl集团股份有限公司 | Beam shaping device and projection equipment |
| CN112539917A (en) * | 2020-12-03 | 2021-03-23 | 中国工程物理研究院激光聚变研究中心 | Experimental device and method for rock breaking by combining short pulse laser and continuous laser |
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Application publication date: 20131204 |