CN206585192U - The adjustable fiber coupled laser system of power output dutycycle - Google Patents
The adjustable fiber coupled laser system of power output dutycycle Download PDFInfo
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- CN206585192U CN206585192U CN201720275570.0U CN201720275570U CN206585192U CN 206585192 U CN206585192 U CN 206585192U CN 201720275570 U CN201720275570 U CN 201720275570U CN 206585192 U CN206585192 U CN 206585192U
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Abstract
The utility model discloses a kind of adjustable fiber coupled laser system of power output dutycycle, the fiber coupled laser system includes laser successively along light path, collimation lens, coupled lens and optical fiber, the backward coupled lens output collimated light beam of the collimated collimated of laser of laser output, coupled lens are by laser beam focusing and are coupled among the fibre core of optical fiber, the optical displacement piece for changing laser beam position can be translated by being set between collimation lens and coupled lens, so that the light beam for being input to coupled lens changes to position during fiber coupling and quantity, and then change coupling efficiency, realize adjustable to the dutycycle of laser output power.The system architecture is simple, it is simple and feasible, energy loss is few in use, it is applicable to the Optical Maser System of efficient stable, and there is low cost, regulation and steady performance is easily assembled, the redundancy and uncertainty of Optical Maser System are not resulted in use, are adapted to industrially promote the use of.
Description
Technical field
The utility model is related to field of laser device technology, more particularly to a kind of adjustable fiber coupling of power output dutycycle
Optical Maser System.
Background technology
The features such as high brightness, high coherence and high collimations that laser has due to it, in industry, communication, medical science, science
The field such as research and social life has played unique and vital effect.But laser stability is required at some to compare
Higher situation, it is conventional especially when needing high-precision linear to adjust fiber coupled laser diode power output
Mode be the parameter that circuit is controlled changing semiconductor laser by way of change power output, it is this to pass through semiconductor
Laser control circuit is modulated（Especially High Speed Modulation）The overshoot effect that power output is brought, for some it is high-precision should
With especially fluorimetric analysis field, it is easy to cause the laser output power of moment excessive and cause the bleaching of sample to imitate
Should, influence follow-up detection and analysis.
The content of the invention
The purpose of this utility model is exactly that there is provided a kind of power output in order to solve the above-mentioned problems in the prior art
The adjustable fiber coupled laser system of dutycycle.
The purpose of this utility model will be achieved by the following technical programs：The adjustable optical fiber coupling of power output dutycycle
Optical Maser System is closed, the fiber coupled laser system includes laser, collimation lens, coupled lens and light successively along light path
Fibre, the backward coupled lens output collimated light beam of the collimated collimated of laser of the laser output, coupled lens will swash
Light light beam is focused on and is coupled among the fibre core of optical fiber, and change can be translated by being set between the collimation lens and coupled lens
The optical displacement piece of laser beam position, the optical displacement piece is fixed on a piezoelectric ceramic motor, by changing the light
The anglec of rotation and rotary speed of displacement study piece to be input to the light beams of coupled lens to position during fiber coupling and quantity
Change, and then change coupling efficiency, realize adjustable to the dutycycle of laser output power.
Preferably, the optical displacement piece is parallel plate glass or optical plastic, can be set, set with one or more
During polylith, it is parallel to each other between each piece.
Preferably, the anglec of rotation of the optical displacement piece is 9 ~ 12 °.
Preferably, the rotary speed of the optical displacement piece is 900 ~ 1200rpm.
Preferably, the laser beam that the collimation lens is used to send in the laser is collimated, and makes the laser
Beam collimation is exported, and the collimation lens includes one or more lens.
Preferably, the coupled lens include one or more lens.
Preferably, the laser is semiconductor laser, the semiconductor laser be single transverse mode laser diode or
Many transverse mode laser diodes.
Preferably, the optical fiber is single-mode fiber or multimode fibre or polarization maintaining optical fibre.
Preferably, the fiber coupled laser system is provided with laser, collimation lens, light along same light path successively gap
Displacement study piece, coupled lens and optical fiber.
The advantage of technical solutions of the utility model is mainly reflected in：By adjusting rotatable optical displacement piece so that defeated
Enter and changed to the light beam of coupled lens to position during fiber coupling and quantity, and then change coupling efficiency, realize to swashing
The dutycycle of light device power output is adjustable.
The position for the light beam for being coupled to optical fiber by coupled lens is allowed to occur by adjusting rotatable optical displacement piece
Translation change, so as to linearly change coupling efficiency, on the premise of semiconductor laser power output is not changed, reaches by rotation
Turn the purpose that optical displacement piece directly linearly changes fiber coupled laser diode power output.
The position for the light beam for being coupled to optical fiber by coupled lens is allowed to occur by adjusting rotatable optical displacement piece
Translation change, and this light beam translation diameter is more than the diameter of coupling optical fiber, before semiconductor laser power is not changed
Put, reach that the anglec of rotation and rotary speed by adjusting rotary optical displacement piece change fiber coupled laser diode defeated
Go out the purpose of power duty cycle.
The fiber coupled laser system architecture is simple, and simple and feasible, energy loss is few in use, is applicable to
The Optical Maser System of efficient stable, and there is low cost, regulation and steady performance is easily assembled, in use will not
The redundancy and uncertainty of Optical Maser System are caused, is adapted to industrially promote the use of.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model fiber coupled laser.
Fig. 2 is that the rotation of the utility model optical displacement piece produces different positions passes of the displacement relative to fibre core diameter
It is a kind of dutycycle schematic diagram of corresponding power output.
The implication of each reference is as follows in figure：
1--- lasers, 2--- collimation lenses, 3--- coupled lens, 4--- optical fiber, 5--- optical displacement pieces.
Embodiment
The purpose of this utility model, advantage and feature, will be schemed by the non-limitative illustration of preferred embodiment below
Show and explain.These embodiments are only the prominent examples using technical solutions of the utility model, all to take equivalent substitution or wait
Technical scheme formed by effect conversion, all fall within the utility model it is claimed within the scope of.
The utility model discloses a kind of fiber coupled laser system of the linear continuously adjustabe of power output, such as Fig. 1 institutes
Show, the fiber coupled laser system includes laser 1, collimation lens 2, coupled lens 3 and optical fiber 4, tool successively along light path
Body, in the present embodiment, it is saturating that the fiber coupled laser system is provided with laser, collimation along same light path successively gap
Mirror, optical displacement piece, coupled lens and optical fiber, in the present embodiment, the laser 1 are placed along optical axis z directions, the laser
Device 1 is preferably semiconductor laser, and the semiconductor laser is single transverse mode laser diode（For example, one kind uses diode
DEB the or VCSEL laser diodes of adjustable in terms of launch wavelength）Or many transverse mode laser diodes, the optical fiber 4 is
Single-mode fiber or multimode fibre or polarization maintaining optical fibre, in the present embodiment, the optical fiber 4 are preferably multimode fibre.
The collimation lens 2 is collimated the laser beam that the laser is sent, and makes the laser beam collimation defeated
Go out.The backward coupled lens 3 output collimated light beam for the collimated collimation of lens 2 of laser that the laser 1 is exported, coupled lens 3
By laser beam focusing and coupled to optical fiber 4 fibre core among, being set between collimation lens 2 and coupled lens 3 to translate
Change the optical displacement piece 5 of laser beam position so that be input to the light beams of coupled lens 3 to optical fiber 4 couple when position with
Quantity changes, and then changes coupling efficiency, realizes adjustable to the LINEAR CONTINUOUS of laser output power.As shown in figure 1,
In the technical program, the laser 1, collimation lens 2, coupled lens 3, optical fiber 4 and optical displacement piece 5 in same light path according to
It is secondary to set.
The optical displacement piece 5 is parallel plate glass or optical plastic, and specifically, the optical displacement piece is by BK7（Or
Person K9）The optical parallel plate that composition is constituted, when in use, the optical displacement piece can be set with one or more, set polylith
When, it is parallel to each other between each piece, in the present embodiment, the optical displacement piece 5 is preferably one piece of parallel plate glass, certainly,
The optical displacement piece 5 is alternatively polylith, and the quantity not to the optical displacement piece 5 does specifically defined in the present embodiment.
In use, the optical displacement piece 5 is fixed on piezoelectric ceramic motor, the optical displacement piece is covering laser optical beam diameter 2-
3 times of sizes, it is therefore an objective to guarantee move integrally during can gamut pass through laser beam.
The piezoelectric ceramic motor is a kind of New-type electric machine developed based on piezo-electric effect, with high resolution ratio and essence
Degree, have the advantages that compact conformation, high-torque output, without electromagnetic interference, cut off self-lock, it is possible to being changed in ultrahigh vacuum makes
With being widely used in the application fields such as semiconductor, optics, bioscience and national defence.The optical displacement piece 5 by its thickness and
The anglec of rotation changes the translation position of laser beam, and its relation equation is：
X is that optical displacement piece is in the anglec of rotation with collimated ray upright position relative to it, and t is optical displacement piece
Gross thickness, n be optical displacement piece correspondence laser output wavelength refractive index, d be coupled to optical fiber laser beam it is parallel
Displacement.
Laser beam having laser beam after certain thickness optical displacement piece 5 by rotatable regulation after collimation
Enter to inject coupled lens 3, the laser beam of outgoing is focused and be coupled in the fibre core of optical fiber by the coupled lens 3, lead to
The anglec of rotation and rotary speed for the optical displacement piece 5 for changing rotation are crossed, the anglec of rotation of the optical displacement piece is 9 ° ~ 12 °,
In the present embodiment, the anglec of rotation of the optical displacement piece is preferably 10 °, the rotary speed of the optical displacement piece for 900 ~
1200rpm, in the present embodiment, the rotary speed of the optical displacement piece is preferably 1000rpm.So that passing through coupled lens coupling
Translation change occurs for the light-beam position for closing optical fiber, and the distance of translation change exceedes the diameter of optical fiber, and then linearly changes coupling
Close the dutycycle of efficiency.
Fig. 2 is that the rotation generation displacement of optical displacement piece is corresponding defeated relative to the different position relationships of fibre core diameter
Go out a kind of dutycycle schematic diagram of power, t1Just to adjust the time to fiber core, t by displacement2Light is maintained at for displacement
The time of long and slender core, t3To adjust out the time of fiber core by displacement.By adjusting the anglec of rotation of optical displacement piece 5
With the change of rotary speed, it can correspond directly to be coupled to the change of time of the light-beam position of optical fiber inside and outside fiber core
Change, fibre core diameter influence of the scope to coupling efficiency for dutycycle adjustable, the anglec of rotation of the optical displacement piece 5
It is corresponding relation with coupling efficiency, so as to have adjusted the change of the dutycycle of the power output for the laser for being coupled to optical fiber.
The fibre core that the spot size of the laser beam of laser output after the focusing of coupled lens 3 is less than optical fiber is straight
Footpath, and further, the change in location produced is rotated by optical displacement piece 5, fibre core diameter scope to coupling
The hot spot that the coverage of efficiency is not only in laser is coupled in fiber core and is not coupled to completely in fiber core completely
Within the scope of, and be also included within the hot spot of laser and be coupled in fiber core and be not coupled to completely in fiber core completely
Outside scope, and further, the relation of the dutycycle of the proportional time diameter correspondence power output inside and outside fiber core.
The position for the light beam for being coupled to optical fiber by coupled lens is allowed to occur by adjusting rotatable optical displacement piece
Translation change, and this light beam translation diameter is more than the diameter of coupling optical fiber, before semiconductor laser power is not changed
Put, reach that the anglec of rotation and rotary speed by adjusting rotary optical displacement piece change fiber coupled laser diode defeated
Go out the purpose of power duty cycle.
It will be apparent to one skilled in the art that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and
In the case of without departing substantially from spirit and essential characteristics of the present utility model, it can realize that this practicality is new in other specific forms
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type limits by appended claims rather than described above, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in the utility model, any reference in claim should not be considered as into limitation
Involved claim.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.
Claims (9)
1. the adjustable fiber coupled laser system of power output dutycycle, it is characterised in that：The fiber coupled laser system
Include laser successively along light path（1）, collimation lens（2）, coupled lens（3）And optical fiber（4）, the laser（1）Output
The collimated lens of laser（2）The backward coupled lens of collimation（3）Export collimated light beam, the coupled lens（3）By laser beam
Focus on and be coupled to optical fiber（4）Fibre core among, in the collimation lens（2）And coupled lens（3）Between set and can translate
Change the optical displacement piece of laser beam position（5）, the optical displacement piece（5）It is fixed on a piezoelectric ceramic motor, passes through
Change the optical displacement piece（5）The anglec of rotation and rotary speed to be input to coupled lens（3）Light beam to optical fiber（4）
Position and quantity during coupling change, and then change coupling efficiency, realize adjustable to the dutycycle of laser output power.
2. the adjustable fiber coupled laser system of power output dutycycle according to claim 1, it is characterised in that：Institute
State optical displacement piece（5）For parallel plate glass or optical plastic, can be set with one or more, when polylith is set, each piece it
Between be parallel to each other.
3. the adjustable fiber coupled laser system of power output dutycycle according to claim 1, it is characterised in that：Institute
The anglec of rotation for stating optical displacement piece is 9 ° ~ 12 °.
4. the adjustable fiber coupled laser system of power output dutycycle according to claim 1, it is characterised in that：Institute
The rotary speed for stating optical displacement piece is 900 ~ 1200rpm.
5. the adjustable fiber coupled laser system of power output dutycycle according to claim 1, it is characterised in that：Institute
State collimation lens（2）For by the laser（1）The laser beam sent is collimated, and makes the laser beam collimation defeated
Go out, the collimation lens（2）Including one or more lens.
6. the adjustable fiber coupled laser system of power output dutycycle according to claim 1, it is characterised in that：Institute
State coupled lens（3）Including one or more lens.
7. the adjustable fiber coupled laser system of power output dutycycle according to claim 1, it is characterised in that：Institute
State laser（1）For semiconductor laser, the semiconductor laser is single transverse mode laser diode or the pole of many transverse mode lasers two
Pipe.
8. the adjustable fiber coupled laser system of power output dutycycle according to claim 1, it is characterised in that：Institute
State optical fiber（4）For single-mode fiber or multimode fibre or polarization maintaining optical fibre.
9. the adjustable fiber coupled laser system of power output dutycycle according to claim 1, it is characterised in that：Should
Fiber coupled laser system is provided with laser along same light path successively gap（1）, collimation lens（2）, optical displacement piece
（5）, coupled lens（3）And optical fiber（4）.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720275570.0U CN206585192U (en) | 2017-03-21 | 2017-03-21 | The adjustable fiber coupled laser system of power output dutycycle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720275570.0U CN206585192U (en) | 2017-03-21 | 2017-03-21 | The adjustable fiber coupled laser system of power output dutycycle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111694125A (en) * | 2020-07-16 | 2020-09-22 | 莱特巴斯光学仪器（镇江）有限公司 | Multifunctional lens with collimation and coupling functions |
| CN113649689A (en) * | 2020-05-12 | 2021-11-16 | 深圳市联赢激光股份有限公司 | Optical system |
| CN114657552A (en) * | 2022-03-01 | 2022-06-24 | 苏州大学 | Laser cladding device with adjustable duty ratio |
-
2017
- 2017-03-21 CN CN201720275570.0U patent/CN206585192U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113649689A (en) * | 2020-05-12 | 2021-11-16 | 深圳市联赢激光股份有限公司 | Optical system |
| CN111694125A (en) * | 2020-07-16 | 2020-09-22 | 莱特巴斯光学仪器（镇江）有限公司 | Multifunctional lens with collimation and coupling functions |
| CN114657552A (en) * | 2022-03-01 | 2022-06-24 | 苏州大学 | Laser cladding device with adjustable duty ratio |
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