CN108711730A - A kind of high stability optical fiber laser - Google Patents
A kind of high stability optical fiber laser Download PDFInfo
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- CN108711730A CN108711730A CN201810496306.9A CN201810496306A CN108711730A CN 108711730 A CN108711730 A CN 108711730A CN 201810496306 A CN201810496306 A CN 201810496306A CN 108711730 A CN108711730 A CN 108711730A
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- optical fiber
- fibre
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- laser
- bundling device
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 164
- 239000000835 fiber Substances 0.000 claims abstract description 116
- 238000005086 pumping Methods 0.000 claims abstract description 69
- 238000010168 coupling process Methods 0.000 claims abstract description 56
- 230000008878 coupling Effects 0.000 claims abstract description 51
- 238000005859 coupling reaction Methods 0.000 claims abstract description 51
- 230000004927 fusion Effects 0.000 claims abstract description 7
- 238000005253 cladding Methods 0.000 claims description 16
- 238000002844 melting Methods 0.000 claims description 14
- 230000008018 melting Effects 0.000 claims description 14
- 238000003466 welding Methods 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 5
- 238000004857 zone melting Methods 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- 238000003780 insertion Methods 0.000 abstract description 3
- 230000037431 insertion Effects 0.000 abstract description 3
- 238000000227 grinding Methods 0.000 description 9
- 238000005498 polishing Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 229910052775 Thulium Inorganic materials 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- FRNOGLGSGLTDKL-UHFFFAOYSA-N thulium atom Chemical compound [Tm] FRNOGLGSGLTDKL-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094049—Guiding of the pump light
- H01S3/094053—Fibre coupled pump, e.g. delivering pump light using a fibre or a fibre bundle
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06716—Fibre compositions or doping with active elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094003—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light the pumped medium being a fibre
- H01S3/094019—Side pumped fibre, whereby pump light is coupled laterally into the fibre via an optical component like a prism, or a grating, or via V-groove coupling
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
The present invention discloses a kind of high stability optical fiber laser, including the bundling device being set in resonant cavity, first conical section of pumping optical fiber couples to form bundling device with the coupled zone melting on signal optical fibre, gain fibre in resonant cavity absorbs the pump light that pumping optical fiber is sent into resonant cavity through bundling device, it is exported after forming laser, bundling device disclosed in the present application is located in resonant cavity, it avoided high-power pump light and is directly injected into fiber grating, the stability for improving laser enables single-resonator laser device to export the laser of higher power；Compared to end pumping technique, pumping optical fiber is coupled with signal optical fibre lateral fusion in the present invention, signal Insertion Loss is almost nil, greatly improve pumping efficiency, therefore the heat generated when coupling is significantly reduced, the light light conversion efficiency of laser is improved, ensures optical fiber laser high-power output, while the stability of optical fiber laser being enable further to be promoted.
Description
Technical field
The present invention relates to optical fiber laser fields, and in particular to a kind of high stability optical fiber laser.
Background technology
Pumping coupler is the important devices used in optical fiber laser and fiber amplifier, and having is not influencing main optical path
Under the premise of transmission, single channel or multichannel LD pump lights led into optical fiber by pumping optical fiber needed for providing for laser
Pump power the advantages of.
The manufacture craft of existing pumping coupler product is usually will be by M signal light optical fiber and surrounding pump fibers
The fiber optic bundle of composition carries out drawing cone, and when boring waist diameter as doubly clad optical fiber diameter, fiber optic bundle is cut off from cone waist
And carry out end face welding with doubly clad optical fiber.As ZL201410224237.8 is disclosed a kind of (N+1) × 1 based on fiber optical corrosive
Optical fiber end surface pump combiner, signal input optical fibre disclosed in the patent need to become one with pumping optical fiber sintering connection
It is radially cut flat with after fiber optic bundle, then fiber optic bundle is connect with output doubly clad optical fiber by end face.
Although this class formation relatively effective can enter coupling pump light in doubly clad optical fiber, the pumping of relatively high power
Light enters inner cladding from end face, be easy to cause the thermal damage of end face, therefore, limits the increasing into the pumping light power of inner cladding
Add, to limit further increasing for optical fiber laser output power.
In order to overcome the problems referred above, the art planted agent possesses side-pumping coupler technology, existing profile pump coupling
Mode mainly has：The coupling of V slot profile pumps, embedded mirror type pump coupling, the coupling of angle grinding and polishing profile pump etc., wherein：
The coupling of V slot profile pumps is coupled by opening up V-groove on signal optical fibre with pumping optical fiber realization, since V slots are embedding
Enter inner cladding, therefore has the expansion for being unfavorable for multiple spot injection pumping power compared with lossy for the pump light transmitted in inner cladding
Exhibition；
Embedded mirror type pump coupling mode is the improvement in the groove etched modes of V, but with V slot profile pump method phases
Seemingly, cutting can influence the transmission of pump light in inner cladding, and the bundling device loss for coupling formation is high, therefore embedded lens type pumping
Coupling is difficult to use in the multi-point pump of doubly clad optical fiber.
The coupling of angle grinding and polishing profile pump is by end face by the good pumping optical fiber refractive index close of certain angle grinding and polishing
Optical cement is glued on the inner cladding of doubly clad optical fiber, and fixes two fine relative positions, and pump light can be by pumping optical fiber
Side surface coupling enters the inner cladding of doubly clad optical fiber.The usual technology requires the grinding and polishing angle of pumping optical fiber end face larger, for light
Fine end face grinding and polishing process proposes very high requirement, to ensure coupling efficiency, needs to keep grinding and polishing under the rubbing down angle of very little
The integrality of pumping optical fiber is highly difficult afterwards, and the leakage of pump light can be caused if pumping optical fiber breakage, this is that it limits coupling
The main reason for closing high power pump light.In addition the complex manufacturing technology of such side-coupler, yield rate is low, is unfavorable for factory
Mass production；Secondly, under high pump power, optical cement, which is difficult to bear its power density, can cause to volatilize or decompose, and make coupling
Efficiency is closed to decline.
Further, since the bundling device pump coupling efficiency of above-mentioned coupled modes formation is low or loss of signal is high, cause to close beam
Device generates heat seriously in high-power output, is easily damaged, therefore, it is necessary to bundling device is set to outside resonant cavity.Due to bundling device
It is set to outside resonant cavity, pump light is caused to be directly injected into fiber grating, and the manufacture craft of fiber grating determines that it can not hold
By excessively high pump power, therefore the structure limits single resonance cavity optical fibre laser and develops to higher power.
Invention content
In view of this, the application provides a kind of high stability optical fiber laser, pumping optical fiber and signal optical fibre couple to be formed
Bundling device be located in resonant cavity, avoided high-power pump light and be directly injected into fiber grating, and improved the steady of laser
It is qualitative, so that single-resonator laser device is exported the laser of higher power；It is disclosed in the present application compared with traditional pump technology
The signal Insertion Loss of lateral fusion pumping configuration is almost nil, and greatly improves pumping efficiency, ensures that optical fiber laser is high
While power output, the stability of optical fiber laser is enable further to be promoted.
In order to solve the above technical problems, technical solution provided by the invention is a kind of high stability optical fiber laser, including
Resonant cavity is provided with bundling device, the first conical section and the coupled zone side on signal optical fibre of pumping optical fiber in the resonant cavity
Melting coupling forms bundling device, the gain fibre in resonant cavity and the bundling device welding, for absorbing pumping optical fiber economic cooperation beam
Device is sent into the pump light of resonant cavity, is exported through resonant cavity after forming laser.
Preferably, the resonant cavity includes the first fiber grating and the second fiber grating, first fiber grating and the
The gain fibre is provided between two fiber gratings.
Preferably, the bundling device is set between first fiber grating and gain fibre, or is set to described
Between two fiber gratings and gain fibre；
The pumping optical fiber coupled in the bundling device is for unidirectionally providing pump light.
Preferably, the bundling device is respectively arranged between first fiber grating and gain fibre and the gain light
Between fine and the second fiber grating, the pumping optical fiber coupled in the bundling device is used for two-way offer pump light.
Preferably, the side of first fiber grating and/or second fiber grating is additionally provided with the stripping of covering power
From device.
Preferably, the pumping optical fiber includes the first fibre core set gradually from the inside to the outside, the first covering and the first coating
Layer, by prestretching taper at the first conical section, linkage section and the second taper after one section of first coat of the pumping optical fiber removal
Section, first conical section form the bundling device by being coupled with the coupled zone melting on the signal optical fibre.
Preferably, the signal optical fibre is passive doubly clad optical fiber, includes successively from the inside to the outside：Second fibre core, the second packet
Layer, third covering and the second coat, formed after one section of second coat of removal and third covering on the signal optical fibre described in
Coupled zone.
Preferably, in the coupled zone, first covering is coupled with the melting of the second covering.
Preferably, the ratio between the first fibre core of arbitrary two radial section and the first covering area of section on first conical section
Equal, first covering and the first fibre core on first conical section in axial direction have area of section even transition
Trend.
Preferably, the bevel angle of first conical section is not more than 1 °.
Compared with prior art, detailed description are as follows by the application：
This application discloses a kind of high stability optical fiber laser, there is the first conical section, the signal on pumping optical fiber
Coupled zone is provided on optical fiber, the first conical section and coupled zone melting coupling form bundling device, and bundling device is located in resonant cavity, pump
Pump light in the optical fiber of Pu is sent directly into from coupled zone in resonant cavity, is sent out after forming laser.The taper of first conical section
A part in surface is coupled with one section of coupled zone lateral fusion of signal optical fibre side, compared with end coupling, is had higher
Coupling efficiency, signal light loss is lower, and the isolation of pumping optical fiber and signal optical fibre is high.Meanwhile by above-mentioned coupled modes,
Bundling device is set in resonant cavity, pump light is avoided and is directly injected into fiber grating, the stability of laser is improved, makes list
Resonance-cavity laser can export the laser of higher power；The coupled modes of lateral fusion coupling couple with V slot profile pumps, are embedding
Enter mirror type pump coupling mode in comparison, side surface coupling disclosed in the present application effectively reduces to be generated when end coupling
Heat, the shape of signal optical fibre are influenced small by stress and temperature, and deflection is small, small to the effect of signals in optical fiber, can keep
The laser for the output high-power that optical fiber laser is stablized.
First fiber grating and the second fiber grating constitute resonant cavity, between gain fibre can be Yb dosed optical fiber, mix
The rare-earth-doped fibers such as erbium optical fiber or thulium doped fiber, for being amplified using the hunting power in gain fibre, realization high power,
The laser of high-energy exports.
Structure disclosed in the present application can provide unidirectional pump light, can also provide two directional pump light, have higher suitable
The property used.
Cladding Power Stripper protects its adjacent optical fiber light for removing the remnant pump light not absorbed by gain fibre
Grid improve the stability of optical fiber laser, while greatly promoting the absorbable pump power of gain fibre, improve the application and swash
The laser output power of light device.
The pumping optical fiber remove after one section of first coat by prestretching cone be formed with sequentially connected first conical section,
Linkage section and the second conical section, it is whole that the first conical section, linkage section and the second conical section under connection is kept to be more convenient melting
Both ends are clamped in coupling process, fixed position when pumping optical fiber coupling can be effectively ensured, and then ensure coupling efficiency and non-defective unit
Rate.When being coupled with the coupled zone melting on the signal optical fibre, the second conical section is only used for gripping first conical section, when
When the first conical section melted by heating, the second conical section is not bonded with signal optical fibre, linkage section natural fracture in coupling process,
The first conical section is set to be coupled with the coupled zone melting on signal optical fibre.Pumping optical fiber is after removing one section of first coat through pre-
Draw taper at the first conical section, the first conical section formed through the above way has uniform and smooth smooth coupled surface, changes
Coupled surface fitting rate completely has been apt to it, has ensure that coupling efficiency, the pumping optical fiber after prestretching cone can ensures melting with stable holding
Coupling efficiency when coupling, greatly improves pumping efficiency.
Signal optical fibre is passive doubly clad optical fiber, has higher circular symmetry, and intensity is high, by removing on signal optical fibre
One section of second coat and third covering form coupled zone, and in coupled zone, first covering is coupled with the melting of the second covering, guarantor
It has demonstrate,proved pumping optical fiber to couple comprehensively with signal optical fibre, signal Insertion Loss is small, improves coupling efficiency.
First conical section ensures the first fibre core of arbitrary two radial section on the first conical section by drawing when cone molding
Equal with the ratio between the first covering area of section, compared with angle rubbing down, the first covering is wrapped in the surface of the first fibre core always, protects
The laser propagation effect of pump light is demonstrate,proved.
The bevel angle of first conical section is not more than 1 °, has longer coupling section length, stiffness of coupling is high, the damage of laser
Threshold value is high, can greatly improve pumping light power.
Description of the drawings
Fig. 1 is the structural schematic diagram of embodiment 1；
Fig. 2 is the structural schematic diagram of embodiment 2；
Fig. 3 is the structural schematic diagram of embodiment 3；
Fig. 4 is the structural schematic diagram of embodiment 4；
Fig. 5 is the structural schematic diagram of embodiment 5；
Fig. 6 is the structure enlargement diagram at A in Fig. 1-Fig. 5.
Specific implementation mode
It is below in conjunction with the accompanying drawings and specific real in order to make those skilled in the art more fully understand technical scheme of the present invention
Applying example, the present invention is described in further detail.
Embodiment one
As shown in figures 1 to 6, present embodiment discloses a kind of high stability optical fiber lasers, including set gradually
One fiber grating (31), bundling device (32), gain fibre (33), the second fiber grating (34), wherein：
The resonant cavity (3) being made of the first fiber grating (31) and the second fiber grating (34), the gain fibre (33)
It is set between first fiber grating (31) and the second fiber grating (34)；
Pumping optical fiber (1) and the coupling of signal optical fibre (2) lateral fusion constitute bundling device (32), and bundling device (32) is arranged in institute
It states between the first fiber grating (31) and gain fibre (33), the gain fibre (33) and the signal optical fibre welding.
After one section of first coat of removal (13) in pumping optical fiber (1), the first taper is formed with by heating prestretching cone
Section, linkage section and the second conical section, the first conical section, linkage section and the second conical section are sequentially connected, sequentially connected first cone
Shape section, linkage section and the second conical section are more convenient that both ends are clamped in melting coupling process, and pumping optical fiber coupling can be effectively ensured
Fixed position when conjunction ensures coupling efficiency and yields.First conical section is melting coupling with the coupled zone on the signal optical fibre
When conjunction, the second conical section is only used for gripping, and when the first conical section melted by heating, the second conical section does not have and signal optical fibre
Fitting, linkage section natural fracture in coupling process.By prestretching taper at the first conical section in, the first fibre core (11) in cone
Shape, first covering (12) are wrapped on the peripheral surface of the first fibre core (11), and the first covering (12) in the first conical section
Thickness even variation, make arbitrary two radial section on first conical section the first fibre core (11) and the first covering (12) cut
Face area ratio is equal, and first covering (12) on first conical section and the first fibre core (11) in axial direction begin
The trend of area of section even transition is all had eventually.
The signal optical fibre (2) is passive doubly clad optical fiber, includes successively from the inside to the outside：Second fibre core (21), the second packet
Layer (22), third covering (23) and the second coat (24), remove on the signal optical fibre (2) one section of second coat (24) and
Third covering (23) forms the coupled zone (25) afterwards；
First conical section is coupled with the coupled zone (25) lateral fusion, specifically, in the coupled zone (25),
First covering (12) couples to form bundling device (32) with the second covering (22) melting, the first covering (12) and the second covering
(22) melting coupling, makes the pump light in pumping optical fiber be sent directly into signal optical fibre.Compared with end pumping technique, end face pump
Pu needs after blocking signal optical fibre that welding output optical fibre, laser become larger in the numerical aperture of weld again, leads to a part of letter
The leakage of number light generates heat, and the heat of weld bears limit beyond bundling device, so influence optical fiber laser power into
One step is promoted；Meanwhile a part of signal light is leaked to covering from fibre core, influences light conversion efficiency, causes signal optical fibre defeated
Go out the laser of enough power, the form that the application is pumped by side surface coupling makes pump light in the first covering (12) and the second packet
It is uniformly coupled between layer (22), effectively reduces the heat generated when end coupling, keep optical fiber laser power further
It is promoted, meanwhile, pumping optical fiber side melts fixed coupling with signal optical fibre, reduces signal light leakage, improves the light of laser
Light conversion efficiency.
Pump light in pumping optical fiber (1) is sent directly into resonant cavity (3), is avoided high power pump light and is directly injected into light
Fine grating improves the stability of laser.A part in the conical surface of first conical section and signal optical fibre (2) surface
Coupled zone (25) couples, and is not necessarily to the shape of physically changed signal optical fibre (2), small to the effect of signals in optical fiber, can keep light
The laser for the output high-power that fibre laser is stablized.
The bevel angle that first conical section is formed in the process in prestretching cone is not more than 1 °, when the first conical section and coupled zone
(25) when melting coupling, smooth conical surface can keep good contact with coupled zone (25), improve coupling efficiency,
In addition, the bevel angle of the first conical section ensure that coupling area, stiffness of coupling is both improved, ensures the stability of laser, together
When, smaller bevel angle ensure that the stability of optical fiber heat affected zone temperature in melting coupling process, reduce signal optical fibre because
To be deformed caused by heated and stress variation, the transmission performance and stability of product are improved.
The gain fibre (33) is the rare-earth-doped fibers such as Double Cladding Ytterbium Doped Fiber, Er-doped fiber or thulium doped fiber,
Pumping optical fiber (1) is sent into through bundling device (32) in gain fibre (33) by injecting pump light into signal optical fibre (2), is utilized
The laser output of high power, high-energy is realized in hunting power amplification in gain fibre (33).
Based on embodiment one, the technical solution of the application further includes the embodiment that other are unidirectionally pumped, conjunction in the same direction
Beam device (32) can be provided with one or more, can be coupled on the signal optical fibre (2) in each bundling device (32) there are one or
Multiple pumping optical fibers (1), those skilled in the art can be based on embodiment 1 directly to replace and obtain, therefore the application's is attached
It is not showed that in figure, the improvement of these embodiments also should be regarded as protection scope of the present invention.
Embodiment two
As shown in Fig. 2, present embodiment discloses a kind of high stability optical fiber laser, difference from Example 1 is,
Optical fiber laser disclosed in the present embodiment includes the first fiber grating (31), gain fibre (33), bundling device set gradually
(32), the second fiber grating (34), wherein：
The resonant cavity (3) being made of the first fiber grating (31) and the second fiber grating (34), bundling device (32) are set to
Between gain fibre (33) and the second fiber grating (34), the pumping optical fiber (1) coupled in the bundling device (32) is for reversed
Pump light is provided.
Embodiment three
As shown in figure 3, present embodiment discloses a kind of high stability optical fiber laser, difference from Example 1 is,
Optical fiber laser disclosed in the present embodiment includes the first fiber grating (31), bundling device (32), gain fibre set gradually
(33), bundling device (32) and the second fiber grating (34), wherein：
The resonant cavity (3) being made of the first fiber grating (31) and the second fiber grating (34), the gain fibre (33)
It is set between first fiber grating (31) and the second fiber grating (34)；
Between first fiber grating (31) and gain fibre (33), gain fibre (33) and the second fiber grating
(34) coupling in bundling device (32) of bundling device (32), pumping optical fiber (1) and signal optical fibre (2) is respectively arranged between, it is described
The pumping optical fiber (1) coupled in the bundling device (32) of gain fibre (33) both sides is used for two-way offer pump light.
Gain fibre described in the present embodiment (33) is the rare-earth ion-doped light such as Yb dosed optical fiber, Er-doped fiber or thulium doped fiber
It is fine.
Based on embodiment three, the technical solution of the application further includes the embodiment of other two directional pumps, two-way conjunction
Beam device (32) can be provided with one or more, can be coupled on the signal optical fibre (2) in each bundling device (32) there are one or
Multiple pumping optical fibers (1), those skilled in the art can directly replace on the basis of embodiment two and obtain, therefore the application's is attached
It is not showed that in figure, the improvement of these embodiments also should be regarded as protection scope of the present invention.
Example IV
As shown in figure 4, optical fiber laser disclosed in the present embodiment and embodiment one the difference is that：The present embodiment discloses
Optical fiber laser include the first fiber grating (31) set gradually, Cladding Power Stripper (35), bundling device (32), gain
Optical fiber (33) and the second fiber grating (34), wherein Cladding Power Stripper (35) are not absorbed by gain fibre (33) for removing
Remnant pump light, effectively fiber grating is avoided to be damaged, improves the stability of optical fiber laser.
Based on example IV, the technical solution of the application further includes the embodiment that other are unidirectionally pumped, unidirectional conjunction
Beam device (32) can be forward pumping, or backward pumping can be provided with one or more bundling devices on laser
(32), one or more pumping optical fibers (1) can be coupled on the signal optical fibre (2) in each bundling device (32).This field skill
Art personnel can obtain in conjunction with the embodiments four, therefore the structure of the embodiment of the backward pumping is not showed that in the attached drawing of the application
Figure, the improvement of these embodiments also should be regarded as protection scope of the present invention.
Embodiment five
As shown in figure 5, optical fiber laser disclosed in the present embodiment is with embodiment three, difference lies in disclosed in the present embodiment
Optical fiber laser includes the first fiber grating (31) set gradually, Cladding Power Stripper (35), bundling device (32), gain light
Fine (33), bundling device (32), Cladding Power Stripper (35) and the second fiber grating (34).
As shown in fig. 6, stripped one section of first coat (13) of pumping optical fiber (1) disclosed in each embodiment of the application
Afterwards, draw taper at the first conical section, linkage section and the second conical section by heating the part for removing the first coat (13).When
When first conical section absorption heat is coupled with the melting of the coupled zone (25) of signal optical fibre (2), linkage section natural fracture.First cone
First covering (12) and the first fibre core (11) in shape section in axial direction all have the trend of area of section even transition.
The signal optical fibre (2) is passive doubly clad optical fiber, includes successively from the inside to the outside：Second fibre core (21), the second covering (22), the
Triple clad (23) and the second coat (24), one section of second coat (24) of removal and third covering on the signal optical fibre (2)
(23) coupled zone (25) is formed afterwards；In the coupled zone (25), first covering (12) is molten with the second covering (22)
Melt coupling and form bundling device (32), the pump light in pumping optical fiber (1) is made to be sent directly into signal optical fibre.
Existing angle grinding and polishing profile pump coupled modes are to roll over end face by the good pumping optical fiber of certain angle grinding and polishing
It penetrates optical cement similar in rate to be glued on the inner cladding of doubly clad optical fiber, and fixes two fine relative positions, pump light
Enter the inner cladding of doubly clad optical fiber by pumping optical fiber side surface coupling.Since pumping optical fiber sectional dimension is smaller, existing angle
Grinding and polishing profile pump coupled modes it is difficult to ensure that coupled surface it is smooth, cause the coupling of pumping optical fiber and signal optical fibre imitate
Fruit is poor, thereby reduces coupling efficiency and limits pumping light power, and pumping optical fiber disclosed in the present application is bored by prestretching and is molded,
The surface easy to process for ensureing the first conical section and having circular cone, the first conical section and tapered zone is bonded effect when improving coupling.
It the above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
The limitation of the present invention, protection scope of the present invention should be subject to claim limited range.For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these change
Protection scope of the present invention is also should be regarded as into retouching.
Claims (10)
1. a kind of high stability optical fiber laser, including resonant cavity (3), which is characterized in that be provided with conjunction in the resonant cavity (3)
Beam device (32), the first conical section of pumping optical fiber (1) couple to form conjunction with coupled zone (25) lateral fusion on signal optical fibre (2)
Beam device (32), the gain fibre (33) in resonant cavity (3) and the bundling device (32) welding, for absorbing pumping optical fiber (1) warp
Bundling device (32) is sent into the pump light of resonant cavity (3), is exported through resonant cavity (3) after forming laser.
2. a kind of high stability optical fiber laser according to claim 1, which is characterized in that the resonant cavity (3) includes
First fiber grating (31) and the second fiber grating (34), between first fiber grating (31) and the second fiber grating (34)
It is provided with the gain fibre (33).
3. a kind of high stability optical fiber laser according to claim 2, which is characterized in that bundling device (32) setting
Between first fiber grating (31) and gain fibre (33), or it is set to second fiber grating (34) and gain light
Between fine (33)；
The pumping optical fiber (1) coupled in the bundling device (32) is for unidirectionally providing pump light.
4. a kind of high stability optical fiber laser according to claim 2, which is characterized in that the bundling device (32) is respectively
It is set between first fiber grating (31) and gain fibre (33) and the gain fibre (33) and the second fiber grating
(34) between, the pumping optical fiber (1) coupled in the bundling device (32) is used for two-way offer pump light.
5. a kind of high stability optical fiber laser according to claim 3 or 4, which is characterized in that the first optical fiber light
The side of grid (31) and/or second fiber grating (34) is additionally provided with Cladding Power Stripper (35).
6. a kind of high stability optical fiber laser according to claim 1, which is characterized in that pumping optical fiber (1) packet
Include the first fibre core (11), the first covering (12) and the first coat (13) set gradually from the inside to the outside, the pumping optical fiber (1)
It removes after one section of first coat (13) by prestretching taper into the first conical section, linkage section and the second conical section, described first
Conical section forms the bundling device (32) by being coupled with coupled zone (25) melting on the signal optical fibre (2).
7. a kind of high stability optical fiber laser according to claim 6, which is characterized in that the signal optical fibre (2) is
Passive doubly clad optical fiber includes successively from the inside to the outside：Second fibre core (21), the second covering (22), third covering (23) and second
Coat (24), one section of second coat (24) of removal and third covering (23) form the coupling afterwards on the signal optical fibre (2)
It closes area (25).
8. a kind of high stability optical fiber laser according to claim 7, which is characterized in that in the coupled zone (25)
Interior, first covering (12) couples with the second covering (22) melting.
9. a kind of high stability optical fiber laser according to claim 6, which is characterized in that first conical section is taken up an official post
Anticipate two radial sections the first fibre core (11) and equal, the institute on first conical section of the ratio between the first covering (12) area of section
State the first covering (12) and the first fibre core (11) the in axial direction trend with area of section even transition.
10. a kind of high stability optical fiber laser according to claim 9, which is characterized in that first conical section
Bevel angle is not more than 1 °.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115663580A (en) * | 2022-12-07 | 2023-01-31 | 中国航天三江集团有限公司 | Optical fiber laser capable of efficiently absorbing pump light |
| CN118523154A (en) * | 2024-07-25 | 2024-08-20 | 比亚迪股份有限公司 | Red light fiber laser, car lamp and vehicle |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008094543A1 (en) * | 2007-01-30 | 2008-08-07 | Hewlett-Packard Development Company, L.P. | Metamaterial structures for light processing and methods of processing light |
| WO2009080039A1 (en) * | 2007-12-20 | 2009-07-02 | Crystal Fibre A/S | Optical combiner and method of producing the same |
| CN201417321Y (en) * | 2009-06-05 | 2010-03-03 | 深圳朗光科技有限公司 | Doubly clad optical fiber side pump combiner |
| WO2010120958A1 (en) * | 2009-04-14 | 2010-10-21 | Ofs Fitel, Llc | Fiber based laser combiners |
| CN202305878U (en) * | 2011-07-13 | 2012-07-04 | 莱特尔科技（深圳）有限公司 | Optical fiber side pumping power combiner and laser processing system |
| US20120212802A1 (en) * | 2009-08-07 | 2012-08-23 | Northrop Grumman Systems Corporation | Multi-channel fiber laser amplifier combining apparatus including integrated spectral beam combination and a tapered fiber bundle having multiple fiber outputs |
| CN103645551A (en) * | 2013-12-18 | 2014-03-19 | 江苏大学 | Micro-nanofiber component and manufacturing method thereof |
| CN103975263A (en) * | 2012-03-15 | 2014-08-06 | 株式会社藤仓 | Optical fiber combiner and laser device employing same |
| CN203858386U (en) * | 2014-05-26 | 2014-10-01 | 山东海富光子科技股份有限公司 | (N+1)*1 optical fiber end surface pumping combiner based on optical fiber corrosion |
| CN106299983A (en) * | 2016-08-31 | 2017-01-04 | 中国人民解放军国防科学技术大学 | A kind of middle-infrared band optical fiber pumping signal bundling device of laser diode-side-pumped |
-
2018
- 2018-05-22 CN CN201810496306.9A patent/CN108711730B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008094543A1 (en) * | 2007-01-30 | 2008-08-07 | Hewlett-Packard Development Company, L.P. | Metamaterial structures for light processing and methods of processing light |
| WO2009080039A1 (en) * | 2007-12-20 | 2009-07-02 | Crystal Fibre A/S | Optical combiner and method of producing the same |
| WO2010120958A1 (en) * | 2009-04-14 | 2010-10-21 | Ofs Fitel, Llc | Fiber based laser combiners |
| CN201417321Y (en) * | 2009-06-05 | 2010-03-03 | 深圳朗光科技有限公司 | Doubly clad optical fiber side pump combiner |
| US20120212802A1 (en) * | 2009-08-07 | 2012-08-23 | Northrop Grumman Systems Corporation | Multi-channel fiber laser amplifier combining apparatus including integrated spectral beam combination and a tapered fiber bundle having multiple fiber outputs |
| CN202305878U (en) * | 2011-07-13 | 2012-07-04 | 莱特尔科技（深圳）有限公司 | Optical fiber side pumping power combiner and laser processing system |
| CN103975263A (en) * | 2012-03-15 | 2014-08-06 | 株式会社藤仓 | Optical fiber combiner and laser device employing same |
| CN103645551A (en) * | 2013-12-18 | 2014-03-19 | 江苏大学 | Micro-nanofiber component and manufacturing method thereof |
| CN203858386U (en) * | 2014-05-26 | 2014-10-01 | 山东海富光子科技股份有限公司 | (N+1)*1 optical fiber end surface pumping combiner based on optical fiber corrosion |
| CN106299983A (en) * | 2016-08-31 | 2017-01-04 | 中国人民解放军国防科学技术大学 | A kind of middle-infrared band optical fiber pumping signal bundling device of laser diode-side-pumped |
Non-Patent Citations (1)
| Title |
|---|
| V. FILIPPOV 等: "Double clad tapered fiber for high power applications", 《OPTICS EXPRESS》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115663580A (en) * | 2022-12-07 | 2023-01-31 | 中国航天三江集团有限公司 | Optical fiber laser capable of efficiently absorbing pump light |
| CN115663580B (en) * | 2022-12-07 | 2023-03-07 | 中国航天三江集团有限公司 | Optical fiber laser capable of efficiently absorbing pump light |
| CN118523154A (en) * | 2024-07-25 | 2024-08-20 | 比亚迪股份有限公司 | Red light fiber laser, car lamp and vehicle |
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|---|---|
| CN108711730B (en) | 2020-07-07 |
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