CN207601356U - A kind of optical fiber and semiconductor laser module - Google Patents
A kind of optical fiber and semiconductor laser module Download PDFInfo
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- CN207601356U CN207601356U CN201820271992.5U CN201820271992U CN207601356U CN 207601356 U CN207601356 U CN 207601356U CN 201820271992 U CN201820271992 U CN 201820271992U CN 207601356 U CN207601356 U CN 207601356U
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Abstract
The utility model is related to technical field of optical fiber more particularly to a kind of optical fiber and semiconductor laser module.Wherein, the optical fiber is used for coupled laser beam, optical fiber includes the end face for coupled laser beam, end face and the coupling angle between the plane of shaft axis of optic fibre are not equal to 0, angle between the incident axis of laser beam and the axis of optical fiber is inclination angle, so that the axis of laser beam and the axis coaxle of optical fiber after refraction.Therefore, on the one hand, the reflected beams of the laser beam on fiber end face are spatially sufficiently separated with incident beam, and the reflected beams will not return to damage Laser emission module along original optical path.On the other hand, the axis coaxle of laser beam and optical fiber for being refracted into optical fiber transmits, therefore will not generate the phenomenon that laser brightness deteriorates.
Description
Technical field
The utility model is related to technical field of optical fiber more particularly to a kind of optical fiber and semiconductor laser module.
Background technology
High-capacity optical fiber laser with its it is reliable and stable, non-maintaining the advantages of, just gradually replacing traditional gas or solid
Laser, become thin-sheet metal cutting, welding field important machining tool.At present, generally make in high-capacity optical fiber laser
By the use of semiconductor laser module as its pumping source.
Semiconductor laser module includes Laser emission module and optical fiber, and Laser emission module sends laser beam, and by laser
Beam is coupled to optical fiber, referring to Fig. 1, the axis coaxle of the axis of incoming laser beam and optical fiber, the axis of optical fiber is perpendicular to optical fiber
End face, wherein, fiber end face is coated with anti-reflection film.
Utility model people in the process of implementing the utility model, it is found that traditional technology has at least the following problems：One side
Face, the easy backtracking of laser beam of vertical incidence is to Laser emission module, so as to damage Laser emission module.On the other hand,
After laser beam is coupled to optical fiber, since the angle of total reflection of laser is bigger, the angle of divergence of laser is larger after refraction, so as to
The brightness of the laser beam of optical fiber output is caused to deteriorate, for example, brightness reduces.
Utility model content
In order to solve the above-mentioned technical problem, a purpose of the utility model embodiment is intended to provide a kind of optical fiber and partly leads
Volumetric laser module, the phenomenon that the reflected beams backtracking and the brightness of laser beam is avoided to deteriorate.
In a first aspect, the utility model embodiment provides a kind of optical fiber, for coupled laser beam, the optical fiber includes using
In the end face of coupled laser beam, the end face and the coupling angle between the plane of the shaft axis of optic fibre are not equal to 0, incidence
The axis of laser beam and the axis of the optical fiber between angle be inclination angle so that refraction after laser beam axis and institute
State the axis coaxle of optical fiber.
Optionally, there are following relationships with the inclination angle for the coupling angle：
Wherein, n is the refractive index of the optical fiber, and α is the coupling angle, and β is the inclination angle.
Optionally, the optical fiber includes single cladded-fiber.
Optionally, the optical fiber includes doubly clad optical fiber.
Optionally, the coupling angle grinds the optical fiber by grinder and is formed, and is formed alternatively, being cut by optical fiber cutter.
Optionally, the end face is by precise polished processing.
In second aspect, the utility model embodiment provides a kind of semiconductor laser module, including：
Housing, including host cavity；
Any one of them optical fiber；And
Laser emission module is contained in the housing, and the Laser emission module is for sending laser beam, and by institute
Laser beam is stated coupled to the optical fiber.
Optionally, the Laser emission module includes：
Multi-path laser unit, for emitting laser beam；
Condenser lens, for focusing on the laser beam and the laser beam being coupled to the optical fiber.
Optionally, laser cell described in every road all includes：
Semiconductor laser chip, for generating laser；
Fast axis collimation mirror is set to the output terminal of the semiconductor laser chip, and the laser is handled for collimating；
Slow axis collimating mirror is set to the output terminal of the fast axis collimation mirror, is handled for collimating by fast axle standard
Straight mirror treated laser；
Speculum is set to the output terminal of the slow axis collimating mirror, passes through the slow axis for reflecting union space superposition
Collimating mirror treated laser passes through the condenser lens and the laser beam is coupled to the optical fiber to form laser beam.
Optionally, the semiconductor laser module further includes ceramic insertion core or metal lock pin, and the optical fiber passes through the pottery
Porcelain lock pin or the metal lock pin are fixed on the housing.
In the optical fiber and semiconductor laser module that are provided in the utility model embodiment, optical fiber is included for coupled laser beam
End face, end face and coupling angle between the plane of shaft axis of optic fibre are not equal to 0, the axis and optical fiber of incident laser beam
Axis between angle be inclination angle so that refraction after the axis of laser beam and the axis coaxle of optical fiber.Therefore, a side
Face, the reflected beams of the laser beam on fiber end face are spatially sufficiently separated with incident beam, and the reflected beams will not be along former light
Road returns to damage Laser emission module.On the other hand, the axis coaxle of laser beam and optical fiber for being refracted into optical fiber transmits, therefore
The phenomenon that laser brightness deteriorates will not be generated.
Description of the drawings
One or more embodiments are illustrated by corresponding attached drawing, these exemplary illustrations not structure
The restriction of pairs of embodiment, the element for having same reference numbers label in attached drawing is expressed as similar element, unless there are special
It declares, composition does not limit the figure in attached drawing.
Fig. 1 is that traditional technology provides the schematic diagram that a kind of laser beam is coupled to optical fiber；
Fig. 2 is that utility model embodiment provides a kind of structure diagram of semiconductor laser module；
Fig. 3 is that utility model embodiment provides a kind of structure diagram of Laser emission module；
Fig. 4 is that utility model embodiment provides a kind of operation principle schematic diagram of semiconductor laser module；
Fig. 5 is that utility model embodiment provides a kind of structure diagram of laser cell；
Fig. 6 is that the utility model embodiment provides the schematic diagram that a kind of laser beam is coupled to optical fiber；
Fig. 7 is that the utility model embodiment provides a kind of flow diagram of fiber fabrication methods.
Specific embodiment
For the ease of understanding the utility model, in the following with reference to the drawings and specific embodiments, the utility model is carried out more detailed
Thin explanation.It should be noted that when element is expressed " being fixed on " another element, it can be directly in another element
Above or therebetween there may be one or more elements placed in the middle.When an element is expressed " connection " another element, it can
To be directly to another element or there may be one or more elements placed in the middle therebetween.This specification is used
Term " vertical ", " horizontal ", "left", "right", " interior ", " outer " and similar statement for illustrative purposes only.
Unless otherwise defined, the skill of technical and scientific term all used in this specification with belonging to the utility model
The normally understood meaning of technical staff in art field is identical.It is intended merely in the term used in the description of the utility model
The purpose of specific embodiment is described, is not intended to limitation the utility model.Term "and/or" includes used in this specification
The arbitrary and all combination of one or more relevant Listed Items.
In addition, as long as technical characteristic involved in the utility model difference embodiment disclosed below is each other not
Forming conflict can be combined with each other.
For convenience more deeply understand the purpose of this utility model, traditional technology in background technology in addition to being illustrated
Except shortcoming, at least also have the following disadvantages：
As previously mentioned, the end face of optical fiber is coated with anti-reflection film, therefore, user needs to expend high cost, the such light of time making
It is fine.
The damage threshold of anti-reflection film is than relatively low, for high-capacity optical fiber laser, in order to during industrial application
It being capable of long-term stable operation, it usually needs ensure that the laser power density on fiber end face is less than 10MW/cm2。
However, with the progress of semiconductor laser technique, the output power of semiconductor laser module is increasing, and brightness is got over
Come higher.Obviously, traditional technology can not meet it is high-power, in high-brightness semiconductor laser module to the height of optic fibre input end
Damage threshold requires.
Based on this, the utility model embodiment provides a kind of semiconductor laser module.Referring to Fig. 2, the semiconductor laser
Module 100 includes housing 200, optical fiber 300, Laser emission module 400 and optical fiber fixing piece (not shown).
Housing 200 includes host cavity, and housing 200 can be in any appropriate shape.
Optical fiber 300 is fixed on by optical fiber fixing piece on housing 200, wherein, the optical fiber fixing piece include ceramic insertion core or
Metal lock pin, optical fiber 300 are fixed on by ceramic insertion core or metal lock pin on housing 200.In some embodiments, housing 200
A plurality of optical fiber can be installed simultaneously, Laser emission module 400 passes through each road laser beam of a plurality of optical fiber output, therefore, this reality simultaneously
The semiconductor laser module 100 for applying example offer can be multi-channel semiconductor laser module.
In some embodiments, optical fiber 300 includes single cladded-fiber or doubly clad optical fiber.
Laser emission module 400 is contained in housing 200, and Laser emission module 400 is for sending laser beam, and by laser
Beam is coupled to optical fiber 300.
Referring to Fig. 3, Laser emission module 400 includes：Multi-path laser unit 41 and condenser lens 42.
Multi-path laser unit 41 can all generate laser, Bing Jiangge roads for emitting laser beam, per laser cell 41 all the way
Laser is superimposed to form laser beam.
Condenser lens 42 is used to focus on laser beam and laser beam is coupled to optical fiber 300.
Referring to Fig. 4, all include per road laser cell 41：Semiconductor laser chip 411, fast axis collimation mirror 412, slow axis are accurate
Straight mirror 413 and speculum 414.
Semiconductor laser chip 411 is used to generate laser.Since Laser emission module 400 includes multi-path laser unit 41,
Therefore, semiconductor laser module 100 provided in this embodiment can be the semiconductor laser module of multi-chip.
Fast axis collimation mirror 412 is set to the output terminal of semiconductor laser chip 411, and laser is handled for collimating.
Slow axis collimating mirror 413 is set to the output terminal of fast axis collimation mirror 412, for collimating processing by fast axis collimation mirror
412 treated laser.
Speculum 414 is set to the output terminal of slow axis collimating mirror 413, for reflecting union space superposition by slow axis collimating mirror
413 treated laser pass through condenser lens 42 and laser beam are coupled to optical fiber 300 to form laser beam.
In some embodiments, referring to Fig. 5, further including user interaction unit 415, driving unit per road laser cell 41
416 and control unit 417.
User interaction unit 415 is used to couple laser power pattern input by user.For example, for being cut by laser not jljl
During body, needed for laser power be different, wherein, control unit 715 is prestored between object classification and laser power
Contingency table, it is corresponding to swash during for cutting object A when user inputs first laser power mode in user interaction unit 415
Luminous power is first laser power.When user user interaction unit 415 input second laser power mode, for cutting object
During B, corresponding laser power is second laser power.
User interaction unit 415 can be display module, which shows user interface, the UI Preferences
There are all kinds of parameters.
Driving unit 416 is connect with speculum 414, for adjusting the angle of speculum 414.Driving unit 416 includes connecting
Bar transmission mechanism and stepper motor, one end of jointed gear unit are connect with speculum 414, the other end of jointed gear unit with
The driving axis connection of stepper motor.
Control unit 417 is connect respectively with stepper motor in user interaction unit 415 and driving unit 416.Control unit
417 are used for the laser power pattern according to user interaction unit 415, adjust the position of speculum 414, and optical fiber is incident to change
Angle between 300 300 end face of laser beam and optical fiber, exports corresponding laser power.For example, from the above, first laser
Power is less than second laser power, and when cutting object A, control unit 417 inputs first control signal, stepping electricity to stepper motor
Machine adjusts the position of speculum 414 according to first control signal, and adjustment is incident to the laser beam of optical fiber 300 and 300 end face of optical fiber
Between angle be the first angle.Similarly, when cutting object B, control unit 417 inputs second control signal to stepper motor,
Stepper motor adjusts the position of speculum 414 according to second control signal, and adjustment is incident to the laser beam and optical fiber of optical fiber 300
Angle between 300 end faces is the second angle, wherein, the first angle is more than the second angle.
In above-mentioned each embodiment, optical fiber 300 includes the end face 31 for coupled laser beam, herein, for the ease of reason
It solves, which includes incident laser beam 32 and the laser beam 33 after refraction, wherein, the laser beam 33 after refraction is by incidence
What laser beam 32 was formed coupled to optical fiber 300.
Referring to Fig. 6, end face 31 and coupling angle α between the plane of 300 axis of optical fiber are not equal to 0, it is incident
Angle between the axis of laser beam 32 and the axis of optical fiber 300 is angle of inclination beta so that refraction after laser beam 33 axis with
The axis coaxle of optical fiber 300.
Therefore, on the one hand, the reflected beams of the laser beam on fiber end face are spatially sufficiently separated with incident beam, instead
Irradiating light beam will not return to damage Laser emission module along original optical path.On the other hand, the laser beam of optical fiber and the axis of optical fiber are refracted into
Line coaxial transmission, therefore the phenomenon that laser brightness deteriorates will not be generated.
In some embodiments, there are following relationships with angle of inclination beta by coupling angle α：
Wherein, n is the refractive index of optical fiber 300, and α is coupling angle, and β is inclination angle.
In above-mentioned each embodiment, optical fiber 300 cancels the design of the anti-reflection film in such as traditional technology, due to quartz material
Damage threshold it is very high (1GW/cm2), therefore the damage threshold of fiber end face provided in this embodiment is significantly larger than traditional skill
Art.
In some embodiments, coupling angle grinds the optical fiber by grinder and is formed, alternatively, cutting shape by optical fiber cutter
Into.
In some embodiments, end face 31 is by precise polished processing.
For the ease of more deeply understanding the utility model embodiment, the utility model embodiment combination specific example is detailed
Illustrate the purpose of the utility model embodiment, it is specific as follows：
For adjacent laser cell there are difference in height, which is 0.35 millimeter in multi-path laser unit 41.
The output power of semiconductor laser chip 411 is 28 watts, and output wavelength is 915 nanometers, slow-axis direction luminous zone
It it is 100 microns, the angle of divergence is 8 ° (full width at half maximum), and fast axis direction luminous zone is 1 micron, and the angle of divergence is 28 ° (full width at half maximum).
Fast axis collimation mirror 412 is equal to 0.3 millimeter of aspheric design for focal length, and slow axis collimating mirror 413 is equal to for focal length
10 millimeters of spherical surface cylindrical lens.
The output laser of semiconductor laser chip 411, it is accurate by respective fast axis collimation mirror 2 and slow axis collimating mirror 3 respectively
After straight, it is incident to speculum 414.High reflectance deielectric-coating is coated on speculum 414, the reflectivity of 915 nanometers of light is more than
99.5%, in 45 ± 3 ° of incidence angle effectively.The output laser of 8 road laser cells is carried out space by speculum 414 in fast axis direction
Superposition, and ensure that the directive property of the output laser of each laser cell is consistent.
The focal length of condenser lens 42 is 11 millimeters.The laser beam 7 that 8 road laser cells are composed is poly- by condenser lens 42
It is defocused, it is incident to the end face 31 of the optical fiber 300 with coupling angle, the power density about 10MW/ at 300 end face of optical fiber, 31 center
cm2.Optical fiber 300 be 105 microns of core diameter, single cladded-fiber of 125 microns of cladding diameter.
The coupling angle of optical fiber 300 is 4.8 degree, and the angle 10 between the axis of the laser beam 32 of optical fiber 300 and incidence is 2.2
Degree.Incident laser beam 32 be refracted into optical fiber 8 light beam 12 and optical fiber 300 it is coaxial, semiconductor laser is transmitted out by optical fiber 300
Module.The reflected beams of the incident laser beam 32 on 300 end face 31 of optical fiber are spatially sufficiently separated with incident beam, are reflected
Light beam will not return to damage laser chip along original optical path.Final laser module output laser power about 180W, exports laser numerical value
Aperture is less than 0.15.
As the another aspect of the utility model embodiment, the utility model embodiment provides a kind of fiber fabrication methods.
Referring to Fig. 7, fiber fabrication methods 700 include：
Step 71 provides optical fiber；
Step 72 forms fiber end face, wherein, end face and coupling angle between the plane of the shaft axis of optic fibre are not
Equal to 0, and in the fiber end face coupled laser beam, the folder between the axis of the axis of incident laser beam and the optical fiber
Angle is inclination angle, so that the axis coaxle of the axis of the laser beam after refraction and the optical fiber.
Therefore, on the one hand, the reflected beams of the laser beam on fiber end face are spatially sufficiently separated with incident beam, instead
Irradiating light beam will not return to damage Laser emission module along original optical path.On the other hand, the laser beam of optical fiber and the axis of optical fiber are refracted into
Line coaxial transmission, therefore the phenomenon that laser brightness deteriorates will not be generated.
In some embodiments, there are following relationships with the inclination angle for coupling angle：
Wherein, n is the refractive index of the optical fiber, and α is the coupling angle, and β is the inclination angle.
In some embodiments, coupling angle is formed by grinder grinding optical fiber, is formed alternatively, being cut by optical fiber cutter.
In some embodiments, end face is by precise polished processing.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Under the thinking of the utility model, it can also be combined between the technical characteristic in above example or different embodiments,
Step can be realized with random order, and many other variations of the different aspect there are the utility model as described above, be
Simplicity, they do not provide in details；Although the utility model is described in detail with reference to the foregoing embodiments, this
The those of ordinary skill in field should understand that：It can still modify to the technical solution recorded in foregoing embodiments,
Or equivalent replacement is carried out to which part technical characteristic；And these are changed or are replaced, and do not make the sheet of corresponding technical solution
Matter is detached from the range of various embodiments of the utility model technical solution.
Claims (10)
1. a kind of optical fiber, for coupled laser beam, which is characterized in that the optical fiber includes the end face for coupled laser beam, institute
End face and coupling angle between the plane of the shaft axis of optic fibre are stated not equal to 0, the axis of incident laser beam with it is described
Angle between the axis of optical fiber is inclination angle, so that the axis coaxle of the axis of the laser beam after refraction and the optical fiber.
2. optical fiber according to claim 1, which is characterized in that there are following relationships with the inclination angle for the coupling angle：
Wherein, n is the refractive index of the optical fiber, and α is the coupling angle, and β is the inclination angle.
3. optical fiber according to claim 1, which is characterized in that the optical fiber includes single cladded-fiber.
4. optical fiber according to claim 1, which is characterized in that the optical fiber includes doubly clad optical fiber.
5. optical fiber according to claim 1, which is characterized in that the coupling angle grinds the optical fiber by grinder and is formed,
It is formed alternatively, being cut by optical fiber cutter.
6. optical fiber according to claim 1, which is characterized in that the end face is by precise polished processing.
7. a kind of semiconductor laser module, which is characterized in that including：
Housing, including host cavity；
Such as claim 1 to 6 any one of them optical fiber；And
Laser emission module is contained in the housing, and the Laser emission module swashs for sending laser beam by described
Light beam coupling is to the optical fiber.
8. semiconductor laser module according to claim 7, which is characterized in that the Laser emission module includes：
Multi-path laser unit, for emitting laser beam；
Condenser lens, for focusing on the laser beam and the laser beam being coupled to the optical fiber.
9. semiconductor laser module according to claim 8, which is characterized in that laser cell described in per road all includes：
Semiconductor laser chip, for generating laser；
Fast axis collimation mirror is set to the output terminal of the semiconductor laser chip, and the laser is handled for collimating；
Slow axis collimating mirror is set to the output terminal of the fast axis collimation mirror, passes through the fast axis collimation mirror for collimating to handle
Treated laser；
Speculum is set to the output terminal of the slow axis collimating mirror, is collimated for reflecting union space superposition by the slow axis
Mirror treated laser passes through the condenser lens and the laser beam is coupled to the optical fiber to form laser beam.
10. semiconductor laser module according to claim 7, which is characterized in that the semiconductor laser module further includes
Ceramic insertion core or metal lock pin, the optical fiber are fixed on the housing by the ceramic insertion core or the metal lock pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820271992.5U CN207601356U (en) | 2018-02-26 | 2018-02-26 | A kind of optical fiber and semiconductor laser module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820271992.5U CN207601356U (en) | 2018-02-26 | 2018-02-26 | A kind of optical fiber and semiconductor laser module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207601356U true CN207601356U (en) | 2018-07-10 |
Family
ID=62769440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820271992.5U Withdrawn - After Issue CN207601356U (en) | 2018-02-26 | 2018-02-26 | A kind of optical fiber and semiconductor laser module |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111146682A (en) * | 2019-12-04 | 2020-05-12 | 中电科天之星激光技术（上海）有限公司 | Optical fiber coupling semiconductor laser module and semiconductor laser |
-
2018
- 2018-02-26 CN CN201820271992.5U patent/CN207601356U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111146682A (en) * | 2019-12-04 | 2020-05-12 | 中电科天之星激光技术（上海）有限公司 | Optical fiber coupling semiconductor laser module and semiconductor laser |
| CN111146682B (en) * | 2019-12-04 | 2021-02-26 | 上海传输线研究所（中国电子科技集团公司第二十三研究所） | Optical fiber coupling semiconductor laser module and semiconductor laser |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Optic fibre and semiconductor laser module Effective date of registration: 20191129 Granted publication date: 20180710 Pledgee: Shenzhen hi tech investment small loan Co., Ltd Pledgor: Shenzhen star Han Laser Technology Co., Ltd. Registration number: Y2019440020028 |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 518000 5th floor, building B4, xujingchang Industrial Park, No. 39, Haoye Road, Xinhe community, Fuhai street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Xinghan Laser Technology Co.,Ltd. Address before: 518000 No.301, A22, second industrial zone, Fuwei community, Fuyong street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN XINGHAN LASER TECHNOLOGY Co.,Ltd. |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180710 Effective date of abandoning: 20210125 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180710 Effective date of abandoning: 20210125 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20210226 Granted publication date: 20180710 Pledgee: Shenzhen hi tech investment small loan Co.,Ltd. Pledgor: SHENZHEN XINGHAN LASER TECHNOLOGY Co.,Ltd. Registration number: Y2019440020028 |