CN206322997U - A kind of pump source of optical fiber laser - Google Patents
A kind of pump source of optical fiber laser Download PDFInfo
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- CN206322997U CN206322997U CN201621318677.0U CN201621318677U CN206322997U CN 206322997 U CN206322997 U CN 206322997U CN 201621318677 U CN201621318677 U CN 201621318677U CN 206322997 U CN206322997 U CN 206322997U
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- optical fiber
- diode laser
- single tube
- lens
- light beam
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Abstract
The utility model is related to technical field of optical fiber, more particularly to a kind of pump source of optical fiber laser.Including stepped plate is heat sink, diode laser single tube, fast axis collimation lens, slow axis collimation lens, speculum, convergent lens and optical fiber, wherein heat sink at least two rows of stepped plate, often at least provided with a diode laser single tube and fast axis collimation lens, slow axis collimation lens and the speculum of each diode laser single tube of correspondence on row, convergent lens is used to converge in the light beam and coupled into optical fibres of all speculums.Conjunction beam can be carried out to the light beam of more diode laser single tubes, be more satisfactory filling with the space on coupled lens.The light beam coupling that the utility model can send more diode laser single tubes enters optical fiber, so as to improve the pump power of optical fiber laser.
Description
Technical field
The utility model is related to technical field of optical fiber, more particularly to a kind of pump source of optical fiber laser.
Background technology
Diode laser single tube has the advantages that small volume, efficiency high, available for pumped optical fibre laser.Diode swashs
Light device single tube carries out space and closed after beam, and light beam can be coupled to the pumping source as optical fiber laser in optical fiber.Fig. 1 is prior art
The schematic diagram of the fiber coupling module of beam is closed using single tube.In existing diode laser single tube fiber coupling technique, due to
The quantity of diode laser single tube 2 on stepped plate 1 on each step is identical, and the light beam of diode laser single tube closes beam
Afterwards, overall hot spot is rectangular, and also has some places incident without light beams on convergent lens, and underuses and meet optical fiber
The border circular areas of numerical aperture.
Utility model content
Regarding to the issue above, the purpose of this utility model is to provide a kind of pump source of optical fiber laser.To solve two poles
The light beam of pipe laser single pipe is closed after beam, and the problem of underuse the border circular areas for the numerical aperture for meeting optical fiber.
To achieve these goals, the utility model uses following technical scheme：
A kind of pump source of optical fiber laser, including stepped plate is heat sink, diode laser single tube, fast axis collimation lens, slow
Axle collimation lens, speculum, convergent lens and optical fiber, wherein stepped plate are heat sink at least two rows, often at least provided with one two on row
Fast axis collimation lens, slow axis collimation lens and the speculum of pole pipe laser single pipe and each diode laser single tube of correspondence,
Convergent lens is used to converge in the light beam and coupled into optical fibres of all speculums.
Row's diode laser single tube is placed on the stepped plate is heat sink at least two steps, each step, often
Arranging the number of diode laser single tube at least one diode laser single tube, and different rows can differ.
A width of 100-200 μm of the bar of the diode laser single tube 120, output wavelength is 800-1100nm.The light
The core diameter of fibre 170 is 105-135 μm, numerical aperture≤0.22.
The light beam that each diode laser single tube is sent passes through corresponding fast axis collimation lens and slow axis collimation lens pair
Fast axle and slow-axis direction are collimated.
The light beam of the diode laser single tube of same row on same step be reflected by a reflector after in slow-axis direction
Upper arrangement is close, and has the interval being pre-designed between light beam.
Difference in height between different steps causes have in advance between the light beam that the diode laser single tube of different rows is sent
The interval of design.
Multiple rows of light beam arrangement after being reflected by multiple speculums is close, so that by the light beam of more diode laser single tubes
In coupled into optical fibres.
The speculum can use level crossing or prism；The convergent lens can use single lens, can also adopt
Use lens group.
Beam-expanding system, shrink beam system or polarization coupling system can be added between slow axis collimation lens and convergent lens.
Advantage and beneficial effect of the present utility model are：In the utility model, the diode on the different steps of stepped plate
The quantity of laser single pipe can be different, so as to carry out conjunction beam to the light beam of more diode laser single tubes, more fully
Ground is filled with the space on coupled lens, and the characteristic with high brightness., can be by more two poles using structure of the present utility model
The light beam coupling that pipe laser single pipe is sent enters optical fiber, so as to improve the pump power of optical fiber laser.
Brief description of the drawings
Fig. 1 is the structural representation of the pump source of optical fiber laser of prior art；
Fig. 2 is the structural representation of the embodiment of the utility model one；
Fig. 3 is the top view of the embodiment of the utility model one；
Fig. 4 is the side view of the embodiment of the utility model one；
Fig. 5 is the hot spot simulation drawing on the convergent lens of the embodiment of the utility model one；
Fig. 6 is the hot spot simulation drawing on the convergent lens focal plane of the embodiment of the utility model one.
Wherein：110 be that stepped plate is heat sink, and 120 be diode laser single tube, and 120.1-120.10 is first to the 12nd
Pole pipe laser single pipe, 154 be fast axis collimation lens, and 154.1-154.10 is the first to the tenth fast axis collimation lens, and 158 be slow
Axle collimation lens, 158.1-158.10 is the first to the tenth slow axis collimation lens, and 162 be speculum, and 162.1-162.10 is the
One to the tenth speculum, 166 be convergent lens, and 170 be optical fiber.
Embodiment
A kind of prior art of diode laser single tube fiber coupling is：Diode on stepped plate on each step swashs
The quantity of light device single tube is identical, and the light beam of diode laser single tube is closed after beam, and overall hot spot is rectangular, and on convergent lens also
There are some places incident without light beam, and underuse the border circular areas for meeting numerical aperture.
Design concept of the present utility model is：In the fiber coupling technique that beam is closed for existing single tube, convergent lens is mapped to
On hot spot it is generally rectangular, and the problem of underuse the border circular areas for meeting numerical aperture.The present invention is according to as follows
Principle：The numerical aperture limitation of optical fiber requires that the angle of incident light needs the principle less than certain numerical value, for parallel to
Optical axis injects the light of convergent lens, when light falls on the position within the certain radius of convergent lens Shang Ju centers, light
It is the numerical aperture for meeting optical fiber after convergent lens.Therefore, it is circle that the region of numerical aperture is met on convergent lens.
The utility model utilizes stepped plate and one group of reflector alignment light beam, and the light beam for sending multiple rows of diode laser single tube is tighter
Thickly arrange, be more satisfactory filling with meeting the space of numerical aperture on coupled lens, such as diode laser single tube has body
The advantages of product small, efficiency high, available for pumped optical fibre laser.Diode laser single tube carries out space and closed after beam, and light beam can
It is coupled to the pumping source as optical fiber laser in optical fiber.
As Figure 1-4, a kind of pump source of optical fiber laser that the utility model is provided, including stepped plate heat sink 110, two
Pole pipe laser single pipe 120, fast axis collimation lens 154, slow axis collimation lens 158, speculum 162, convergent lens 166 and optical fiber
170, wherein at least two rows of stepped plate heat sink 110, often arrange it is upper at least provided with a diode laser single tube 120 and correspondence each
Fast axis collimation lens 154, slow axis collimation lens 158 and the speculum 162 of diode laser single tube 120, convergent lens 166 are used
In in the light beam and coupled into optical fibres 170 for converging all speculums 162.
Row's diode laser single tube is placed on the stepped plate heat sink 110 at least two steps, each step
120, the number for often arranging diode laser single tube 120 at least one diode laser single tube 120, and different rows can not phase
Together.The light beam that each diode laser single tube 120 is sent passes through corresponding fast axis collimation lens 154 and slow axis collimation lens
158 pairs of fast axles and slow-axis direction are collimated.
A width of 100-200 μm of the bar of the diode laser single tube 120, output wavelength is 800-1100nm.The light
The core diameter of fibre 170 is 105-135 μm, numerical aperture≤0.22.
The light beam of the diode laser single tube 120 of same row on same step reflected by speculum 162 after slow
Arrange close on direction of principal axis, and there is the interval being pre-designed between light beam.Difference in height between different steps causes different rows'
There is the interval being pre-designed between the light beam that diode laser single tube 120 is sent.It is many after being reflected by multiple speculums 162
Light beam arrangement is arranged close, so that the light beam coupling of more diode laser single tubes 120 be entered in optical fiber 170.
The speculum 162 can use level crossing or prism；The convergent lens 166 can use single lens,
Lens group can be used, to reduce aberration.Other optical systems can be added between slow axis collimation lens 158 and convergent lens 166
System, such as beam-expanding system, shrink beam system or polarization coupling system.
Embodiment
A kind of pump source of optical fiber laser that the utility model is provided, including six row's stepped plates heat sink 110, often set one on row
To two diode laser single tubes 120, the fast axis collimation lens 154 of each diode laser single tube 120 of correspondence, slow axis are accurate
Straight lens 158 and speculum 162.Stepped plate is heat sink 110 to have six steps, and the length of each step in a z-direction is 10mm,
Height in y-direction is 0.8mm.Row's diode laser single tube 120 is put on each step.First row puts one two
Pole pipe laser single pipe 120, the second to five row, which often arranges, puts two diode laser single tubes 120, and the 6th row puts one two
Pole pipe laser single pipe 120.
The wavelength of diode laser single tube 120 is 976nm, and quick shaft direction is along y-axis, and slow-axis direction is along z-axis.Diode swashs
The light extraction region quick shaft direction of light device single tube 120 is wide 2 μm, and slow-axis direction is wide 100 μm.What diode laser single tube 120 was sent
The quick shaft direction light beam parameters product of light beam is 0.6mmmrad, and slow-axis direction light beam parameters product is 4mmmrad.Fast axis collimation
The focal length of lens 154 is 0.53mm, and the focal length of slow axis collimation lens 154 is 17mm, and the focal length of convergent lens 166 is 15mm.Through
Cross after collimation, quick shaft direction spot width is less than 0.7mm, slow-axis direction spot width is less than 2.8mm.
Speculum 162 uses heart septum 5mm in diode laser single tube 120 adjacent on level crossing, same step, right
Is spaced on the center z directions of speculum 162 answered also be 5mm.The reflected mirror 162 of light beam of diode laser single tube 120 reflects
Propagate in the z-direction afterwards, the spot center of same row is at intervals of 3mm, and the spot center of adjacent row is at intervals of 0.8mm.Optical fiber 170 is counted
It is 0.22 to be worth aperture, and core diameter is 100 μm.
Fig. 5 is that light beam after the reflection of reflected mirror impinges upon hot spot simulation drawing on convergent lens.As shown in figure 5, ten light
The comparison of spot arrangement is close, can more fully utilize the border circular areas that numerical aperture is met on convergent lens 166.
One or two is often arranged if not using six rows, totally ten diode laser luminescence units 120, but use existing
Four rows for having technology often arrange two, totally eight diode laser luminescence units 120, then eight diode laser luminescence units
Hot spot of 120 light beams sent on convergent lens 166 also is located at meeting in the border circular areas of numerical aperture.But by contrast,
Meet and contains only in the region of numerical aperture 8 hot spots.
Fig. 6 is the hot spot simulation drawing on convergent lens focal plane.As shown in fig. 6, the light beam assembled by convergent lens 166
Can be in coupled into optical fibres 170.
In summary, a kind of high-brightness fiber-optic laser pump source that the utility model is provided, it is heat sink comprising stepped plate
On multiple rows of diode laser single tube, and the number of diode laser single tube can be differed in different row.Multiple rows of two pole
After the light beam that pipe laser single pipe is sent is using the reflection of multiple speculums, relatively closely arrangement, then by convergent lens meeting is realized
Gather into optical fiber.The light beam coupling of more diode laser single tubes can be entered optical fiber by fiber coupling device of the present utility model
In.
Claims (10)
1. a kind of pump source of optical fiber laser, it is characterised in that including stepped plate heat sink (110), diode laser single tube
(120), fast axis collimation lens (154), slow axis collimation lens (158), speculum (162), convergent lens (166) and optical fiber
(170), wherein stepped plate heat sink (110) at least two rows, often at least provided with a diode laser single tube (120) and right on row
Answer fast axis collimation lens (154), slow axis collimation lens (158) and the speculum of each diode laser single tube (120)
(162), convergent lens (166) is used to converge in the light beam and coupled into optical fibres (170) of all speculums (162).
2. pump source of optical fiber laser according to claim 1, it is characterised in that：The stepped plate heat sink (110) is up to
Row's diode laser single tube (120) is placed on rare two steps, each step, at least one diode laser is often arranged
The number of diode laser single tube (120) can be differed in single tube (120), and different rows.
3. pump source of optical fiber laser according to claim 1, it is characterised in that：The diode laser single tube
(120) a width of 100-200 μm of bar, output wavelength is 800-1100nm.
4. pump source of optical fiber laser according to claim 1, it is characterised in that：The core diameter of the optical fiber (170) is
105-135 μm, numerical aperture≤0.22.
5. pump source of optical fiber laser according to claim 1, it is characterised in that：Each diode laser single tube
(120) light beam sent is by corresponding fast axis collimation lens (154) and slow axis collimation lens (158) to fast axle and slow-axis direction
Collimated.
6. pump source of optical fiber laser according to claim 1, it is characterised in that：Two of same row on same step
The light beam of pole pipe laser single pipe (120) arranges close after being reflected by speculum (162) on slow-axis direction, and has between light beam
There is the interval being pre-designed.
7. pump source of optical fiber laser according to claim 1, it is characterised in that：Difference in height between different steps causes not
There is the interval being pre-designed between the light beam sent with the diode laser single tube (120) of row.
8. pump source of optical fiber laser according to claim 1, it is characterised in that：After being reflected by multiple speculums (162)
The arrangement of multiple rows of light beam it is close, so that the light beam coupling of more diode laser single tubes (120) be entered in optical fiber (170).
9. pump source of optical fiber laser according to claim 1, it is characterised in that：The speculum (162) can be using flat
Face mirror or prism；The convergent lens (166) can use single lens, it would however also be possible to employ lens group.
10. pump source of optical fiber laser according to claim 1, it is characterised in that：In slow axis collimation lens (158) and meeting
Beam-expanding system, shrink beam system or polarization coupling system can be added between poly- lens (166).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621318677.0U CN206322997U (en) | 2016-12-02 | 2016-12-02 | A kind of pump source of optical fiber laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621318677.0U CN206322997U (en) | 2016-12-02 | 2016-12-02 | A kind of pump source of optical fiber laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206322997U true CN206322997U (en) | 2017-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201621318677.0U Active CN206322997U (en) | 2016-12-02 | 2016-12-02 | A kind of pump source of optical fiber laser |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112305682A (en) * | 2019-07-26 | 2021-02-02 | 山东华光光电子股份有限公司 | Flat plate type laser and method for improving optical power density |
| CN112769028A (en) * | 2020-12-28 | 2021-05-07 | 北京凯普林光电科技股份有限公司 | Semiconductor fiber laser assembly and fiber laser |
| WO2022221325A1 (en) * | 2021-04-12 | 2022-10-20 | Leonardo Electronics Us Inc. | Ultra-compact high power fiber pump module |
-
2016
- 2016-12-02 CN CN201621318677.0U patent/CN206322997U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112305682A (en) * | 2019-07-26 | 2021-02-02 | 山东华光光电子股份有限公司 | Flat plate type laser and method for improving optical power density |
| CN112769028A (en) * | 2020-12-28 | 2021-05-07 | 北京凯普林光电科技股份有限公司 | Semiconductor fiber laser assembly and fiber laser |
| WO2022221325A1 (en) * | 2021-04-12 | 2022-10-20 | Leonardo Electronics Us Inc. | Ultra-compact high power fiber pump module |
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