CN107968306A - A kind of compound dual-cavity laser of all -fiber pulse - Google Patents
A kind of compound dual-cavity laser of all -fiber pulse Download PDFInfo
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- CN107968306A CN107968306A CN201711327912.XA CN201711327912A CN107968306A CN 107968306 A CN107968306 A CN 107968306A CN 201711327912 A CN201711327912 A CN 201711327912A CN 107968306 A CN107968306 A CN 107968306A
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- 239000000835 fiber Substances 0.000 title claims abstract description 98
- 150000001875 compounds Chemical class 0.000 title claims abstract description 23
- 239000013307 optical fiber Substances 0.000 claims abstract description 170
- 238000005086 pumping Methods 0.000 claims abstract description 50
- 230000007704 transition Effects 0.000 claims abstract description 25
- 229910052761 rare earth metal Inorganic materials 0.000 claims abstract description 10
- 230000003287 optical effect Effects 0.000 claims description 10
- 238000002310 reflectometry Methods 0.000 claims description 9
- 230000010287 polarization Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 239000011651 chromium Substances 0.000 claims description 4
- 239000004065 semiconductor Substances 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052691 Erbium Inorganic materials 0.000 claims description 2
- 229910052689 Holmium Inorganic materials 0.000 claims description 2
- 229910052779 Neodymium Inorganic materials 0.000 claims description 2
- 229910052772 Samarium Inorganic materials 0.000 claims description 2
- 229910052775 Thulium Inorganic materials 0.000 claims description 2
- 229910052769 Ytterbium Inorganic materials 0.000 claims description 2
- 229910052797 bismuth Inorganic materials 0.000 claims description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 claims description 2
- KJZYNXUDTRRSPN-UHFFFAOYSA-N holmium atom Chemical compound [Ho] KJZYNXUDTRRSPN-UHFFFAOYSA-N 0.000 claims description 2
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 claims description 2
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- FRNOGLGSGLTDKL-UHFFFAOYSA-N thulium atom Chemical compound [Tm] FRNOGLGSGLTDKL-UHFFFAOYSA-N 0.000 claims description 2
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 claims description 2
- 239000004038 photonic crystal Substances 0.000 claims 1
- 150000002910 rare earth metals Chemical class 0.000 abstract description 6
- 239000006096 absorbing agent Substances 0.000 abstract description 3
- 239000007844 bleaching agent Substances 0.000 abstract description 2
- 230000009022 nonlinear effect Effects 0.000 abstract description 2
- 238000003466 welding Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000000747 cardiac effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 1
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- 238000003754 machining Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
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- 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
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
- H01S3/0057—Temporal shaping, e.g. pulse compression, frequency chirping
-
- 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
- H01S3/05—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
- H01S3/0675—Resonators including a grating structure, e.g. distributed Bragg reflectors [DBR] or distributed feedback [DFB] fibre lasers
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- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
The invention discloses a kind of compound dual-cavity laser of all -fiber pulse, including pumping source, optical-fiber bundling device, the first gain fibre, the second gain fibre, transition optical fiber, the first reflection-type optical fiber Bragg grating, the second reflection-type optical fiber Bragg grating, the 3rd reflection-type optical fiber Bragg grating, the 4th reflection-type optical fiber Bragg grating, optoisolator, laser beam splitter.The present invention is used as gain media and saturable absorber by the use of the optical fiber of rare earth doped element, while as the core of pulses generation and ensure that single mode operates by the use of small core diameter gain fibre, big core diameter gain fibre is as power amplifier, the influence of nonlinear effect can be reduced, small core diameter and large core fiber realize that mould field is adapted to welding and is easy to bleach inner cavity acquisition burst pulse output by transition optical fiber；The present invention is also all optical fibre structure, has the characteristics that high stability, high power, high-energy, efficient.
Description
Technical field
The invention belongs to laser technology and non-linear optical field, more particularly to a kind of compound two-chamber laser of all -fiber pulse
Device
Background technology
High power, the pulse optical fiber of high-energy are considered as the development of future pulses laser with its plurality of advantages
Trend, has begun to gradually substitute conventional laser at present in many fields.High-energy nanosecond pulse optical fiber laser extensively should
For laser machining, optical time domain reflectometer (OTDR), the generation of second harmonic, the field such as military affairs.
At present in optical fiber laser, the method for obtaining pulse output substantially has two kinds：One kind is mode locked fiber laser,
Its output pulse width is relatively narrow, generally picosecond even femtosecond magnitude；Second is Q adjusting optical fiber laser, it is possible to achieve nanosecond or Asia
Laser (giant-pulse) output of millisecond pulsewidth.In general, traditional Q-regulating method is to add acousto-optic, electrooptic modulator or solid-state
Saturable absorber is realized, but optical fiber is combined with non-optical fibre device can increase system complexity, is influenced system stability and is resisted
Environmental disturbances ability, is unfavorable for industrialization and practical popularization, therefore the nanosecond pulse optical fiber of the high-energy of all-fiber, high-energy
The realization of laser has great importance.
The content of the invention
The problem to be solved in the present invention is, in order to obtain the nanosecond pulse output of high power, high-energy, high light beam quality,
The use of spaced members or extra modulation device is avoided at the same time, there is provided a kind of compound dual-cavity laser of all -fiber pulse, utilizes small core
Footpath gain fibre as pulses generation core and ensure single mode operate, big core diameter gain fibre, can as power amplifier
To reduce the influence of nonlinear effect, small core diameter and large core fiber realize that mould field is adapted to welding and is easy to bleach by transition optical fiber
Inner cavity obtains burst pulse output.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of compound dual-cavity laser of all -fiber pulse, including：Pumping source, optical-fiber bundling device, the first gain fibre, second
Gain fibre, transition optical fiber, the first reflection-type optical fiber Bragg grating, the second reflection-type optical fiber Bragg grating, the 3rd reflection
Type Fiber Bragg Grating FBG, the 4th reflection-type optical fiber Bragg grating, optoisolator；Wherein, the pumping source connection optical fiber closes
The pumping input terminal of beam device；One end of the signal end connection transition optical fiber of optical-fiber bundling device；The other end connection the of transition optical fiber
One end of one reflection-type optical fiber fiber Bragg grating；The other end of first reflection-type optical fiber Bragg grating connects the first gain
One end of optical fiber；The other end of first gain fibre connects one end of the second reflection-type optical fiber Bragg grating；Second reflection-type
The other end of Fiber Bragg Grating FBG connects one end of the 3rd reflection-type optical fiber Bragg grating；The common port of optical-fiber bundling device connects
Connect one end of the second gain fibre；The other end of second gain fibre connects one end of the 4th reflection-type optical fiber Bragg grating；
3rd reflection-type optical fiber Bragg grating and the 4th reflection-type optical fiber Bragg grating form the first resonator；First reflection type optical
Fine Bragg grating and the second reflection-type optical fiber Bragg grating form the second resonator；The pump light that pumping source produces passes through light
The pumping input terminal of fine bundling device is entered in the first resonator, carries out pumping to the second gain fibre, the laser of formation is through light
Fine bundling device, the first reflection-type optical fiber Bragg grating enter in the second resonator, and pumping generation is carried out to the first gain fibre
Another wavelength laser, another wavelength laser that the second resonator produces is successively through optical-fiber bundling device, the second gain fibre, the
Four reflection-type optical fiber Bragg gratings, optoisolator output.
Preferably, the first reflection-type optical fiber Bragg grating, the second reflection-type optical fiber Bragg grating, the 3rd
Reflection-type optical fiber Bragg grating, the reflectivity of the 4th reflection-type optical fiber Bragg grating are R, wherein, 0<R<1.
Preferably, the optical-fiber bundling device can be placed on the 4th reflection-type optical fiber Bragg grating and optoisolator it
Between.
A kind of compound dual-cavity laser of all -fiber pulse, it is characterised in that including：Pumping source, optical-fiber bundling device, first increase
Beneficial optical fiber, the second gain fibre, transition optical fiber, the first reflection-type optical fiber Bragg grating, laser beam splitter, the 4th reflection type optical
Fine Bragg grating, optoisolator；Wherein, the pumping input terminal of the pumping source connection optical-fiber bundling device；Optical-fiber bundling device
Signal end connects one end of transition optical fiber；The other end of transition optical fiber connects one end of the first gain fibre；First gain fibre
The other end connection laser beam splitter one end；Two output terminals of the other end of laser beam splitter are connected directly to form the ring of light；Light
The common port of fine bundling device connects one end of the second gain fibre；The other end of second gain fibre connects the 4th reflection-type optical fiber
One end of Bragg grating；Laser beam splitter and the 4th reflection-type optical fiber Bragg grating form the first resonator；First reflection
Type Fiber Bragg Grating FBG forms the second resonator with laser beam splitter；The pump light that pumping source produces passes through optical-fiber bundling device
Pumping input terminal is entered in the first resonator, carries out pumping to the second gain fibre, and the laser of formation is through optical-fiber bundling device, the
One reflection-type optical fiber Bragg grating enters in the second resonator, and producing another wavelength to the progress pumping of the first gain fibre swashs
Light, another wavelength laser that the second resonator produces is successively through optical-fiber bundling device, the second gain fibre, the 4th reflection-type optical fiber
Bragg grating, optoisolator output.
Preferably, the first reflection-type optical fiber Bragg grating, the 4th reflection-type optical fiber Bragg grating is anti-
The rate of penetrating is R, wherein, 0<R<1.
Preferably, the optical-fiber bundling device can be placed on the 4th reflection-type optical fiber Bragg grating and optoisolator it
Between.
Preferably, the pumping source for semiconductor laser, solid state laser, gas laser, optical fiber laser,
Ramar laser one kind therein, the scope for exporting the centre wavelength of pump light are：700nm≤λ≤2000nm, the pumping
Mode is the single-ended pumping of fibre core, fibre core both-end pumping, the single-ended pumping of covering, covering both-end pumping one kind therein.
Preferably, the optical-fiber bundling device is the optical-fiber bundling device of (2+1) × 1 or the optical-fiber bundling device of (6+1) × 1.
Preferably, first gain fibre, the second gain fibre are the polarization maintaining optical fibre or light mixed with rare earth element
Sub- crystal polarization maintaining optical fibre, the rare earth element of the doping is ytterbium (Yb), erbium (Er), holmium (Ho), thulium (Tm), neodymium (Nd), chromium (Cr),
Samarium (Sm), bismuth (Bi) one or more therein.
Preferably, the fibre of the second gain fibres of core diameter ＜ of the core diameter ＜ transition optical fibers of the first gain fibre
Core diameter.
Beneficial effect
The all-fiber pulse laser of resonator crossmodulation of the present invention has the following advantages：
1st, the present invention is used as gain media and saturable absorber by the use of the optical fiber of rare earth doped element, it is not necessary to extraneous attached
The modulation source added, all optical fibre structure, design is simple, of low cost；
2nd, the present invention utilizes the intermodulation effect of resonator, relative to traditional Q-switched laser, has the output of higher
Power and system stability；
3rd, present invention design is simple, compact-sized, while can be swashed with the ultrashort pulse that output stability is high, pulse energy is big
Light, it is easy to accomplish industrialization.
4th, the present invention has bigger energy and more power using doped fiber and the transition optical fiber matching of different core diameters
Output.
Brief description of the drawings：
Fig. 1 is the compound dual-cavity laser basic principle figure of 1 all -fiber pulse of embodiment；
Fig. 2 is the compound dual-cavity laser basic principle figure of 2 all -fiber pulse of embodiment；
Fig. 3 is the compound dual-cavity laser basic principle figure of 3 all -fiber pulse of embodiment；
Fig. 4 is the compound dual-cavity laser basic principle figure of 4 all -fiber pulse of embodiment；
In figure：1st, pumping source；2nd, optical-fiber bundling device；3 first gain fibres；4th, the second gain fibre；5th, transition optical fiber；6、
First reflection-type optical fiber Bragg grating；7th, the second reflection-type optical fiber Bragg grating；8th, the 3rd reflection-type optical fiber Prague light
Grid；9th, the 4th reflection-type optical fiber Bragg grating；10th, optoisolator；0th, laser beam splitter；
Embodiment
With reference to diagram 1,2,3,4, the invention will be further described, but is not limited only to following several embodiments.
Embodiment 1
A kind of compound dual-cavity laser structure of all -fiber pulse is as shown in Figure 1.1 is pumping source in figure, cardiac wave in can be selected
The semiconductor laser diode of a length of 976nm；2 be optical-fiber bundling device, can select the pump signal bundling device of (2+1) × 1, such as
20/125 type；3 be rare earth doped fiber, and the core diameter that the production of Nufern companies of the U.S. can be selected is 10 microns of Yb dosed optical fiber；4
It is rare earth doped fiber, the core diameter that the production of Nufern companies of the U.S. can be selected is 20 microns of Yb dosed optical fiber；5 be transition light
Fibre, the core diameter that the production of CoActive companies of Canada can be selected is 15 microns of Transmission Fibers；6th, 7,8,9 be reflection type optical
Fine Bragg grating, optional high transoid and partially reflective grating, reflectivity R, wherein 0<R<1；10 be optoisolator, optional
Polarization independent optical isolator.
Pump light enters the second gain fibre 4 by the pumping end of optical-fiber bundling device 2, then reaches the 4th reflection type optical
Fine Bragg grating 9, the Fiber Bragg Grating FBG are high transoid grating, i.e. reflectivity R, R >=99%, the central wavelength is almost
All light can be reflected back, and pass through the second gain fibre 4, optical-fiber bundling device 2, transition optical fiber 5, the first reflection-type optical fiber cloth
Glug optical fiber 6, the first gain fibre 3 and the second reflection-type optical fiber Bragg grating 7, reach the 3rd reflection-type optical fiber Prague light
Grid 8, the Fiber Bragg Grating FBG is is all-trans type grating, i.e. reflectivity R, R >=99%, the almost all of light meeting of the central wavelength
It is reflected back.3rd reflection-type optical fiber Bragg grating 8, the 4th reflection-type optical fiber Bragg grating 9 form the first resonator.
The laser that first resonator produces enters the first gain fibre 3 by the second reflection-type optical fiber Bragg grating 7, then reaches
First reflection-type optical fiber Bragg grating 6, the first reflection-type optical fiber Bragg grating 7 and the second reflection-type optical fiber Bragg grating
6 the second resonators of composition.And first resonator is initially formed laser generation under the excitation of pumping source 1, then to the second resonator
Pumping is carried out, the laser of another wavelength is exported, passes sequentially through transition optical fiber (5), optical-fiber bundling device (2), the second gain fibre
(4), the 4th reflection-type optical fiber Bragg grating (9), optoisolator (10) output.
Embodiment 2
A kind of compound dual-cavity laser structure of all -fiber pulse is as shown in Fig. 2, basic structure is close with Fig. 1, by pumping source
(1) it is placed on optical-fiber bundling device (2) between the 4th reflection-type optical fiber Bragg grating (9) and optoisolator (10).
Embodiment 3
A kind of compound dual-cavity laser structure of all -fiber pulse is as shown in Figure 3.3 be pumping source in figure, cardiac wave in can be selected
The semiconductor laser diode of a length of 976nm；2 be optical-fiber bundling device, can select the pump signal bundling device of (2+1) × 1, such as
20/125 type；3 be rare earth doped fiber, and the core diameter that the production of Nufern companies of the U.S. can be selected is 10 microns of Yb dosed optical fiber；4
It is rare earth doped fiber, the core diameter that the production of Nufern companies of the U.S. can be selected is 20 microns of Yb dosed optical fiber；5 be transition light
Fibre, the core diameter that the production of CoActive companies of Canada can be selected is 15 microns of Transmission Fibers；0 is laser beam splitter, can
Select the 50 of 2 × 1:The beam splitter of 50 splitting ratios, the output terminal of one end two is connected, can have the function that total reflective mirror；6th, 9 are
Reflection-type optical fiber Bragg grating, optional high transoid and partially reflective grating, reflectivity R, wherein 0<R<1；10 be light every
From device, optional polarization independent optical isolator.
Pump light enters the second gain fibre 4 by the pumping end of optical-fiber bundling device 2, then reaches the 4th reflection type optical
Fine Bragg grating 9, the Fiber Bragg Grating FBG are high transoid grating, i.e. reflectivity R, R >=99%, the central wavelength is almost
All light can be reflected back, and pass through the second gain fibre 4, optical-fiber bundling device 2, transition optical fiber 5, the first reflection-type optical fiber cloth
Glug optical fiber 6, reach laser beam splitter 0, and the Fiber Bragg Grating FBG is is all-trans type grating, i.e. reflectivity R, R >=99%, in this
The almost all of light of cardiac wave strong point can be reflected back.Laser beam splitter 0, the 4th reflection-type optical fiber Bragg grating 9 composition the
One resonator.The laser that first resonator produces enters the first gain fibre 3, then reaches first reflection-type optical fiber Prague
Grating 6, laser beam splitter and the second reflection-type optical fiber Bragg grating 6 form the second resonator.And under the excitation of pumping source 1
First resonator is initially formed laser generation, then carries out pumping to the second resonator, exports the laser of another wavelength, pass sequentially through
It is transition optical fiber (5), optical-fiber bundling device (2), the second gain fibre (4), the 4th reflection-type optical fiber Bragg grating (9), optically isolated
Device (10) exports.
Embodiment 4
A kind of compound dual-cavity laser structure of all -fiber pulse is as shown in figure 4, basic structure is close with Fig. 3, by pumping source
(1) it is placed on optical-fiber bundling device (2) between the 4th reflection-type optical fiber Bragg grating (9) and optoisolator (10).
Claims (8)
- A kind of 1. compound dual-cavity laser of all -fiber pulse, it is characterised in that including：Pumping source (1), optical-fiber bundling device (2), It is one gain fibre (3), the second gain fibre (4), transition optical fiber (5), the first reflection-type optical fiber Bragg grating (6), second anti- Emitting Fiber Bragg Grating FBG (7), the 3rd reflection-type optical fiber Bragg grating (8), the 4th reflection-type optical fiber Bragg grating (9), optoisolator (10)；Wherein,The pumping input terminal of pumping source (1) the connection optical-fiber bundling device (2)；The signal end connection transition of optical-fiber bundling device (2) One end of optical fiber (5)；The other end of transition optical fiber (5) connects one end of the first reflection-type optical fiber fiber Bragg grating (6)；The The other end of one reflection-type optical fiber Bragg grating (6) connects one end of the first gain fibre (3)；First gain fibre (3) The other end connects one end of the second reflection-type optical fiber Bragg grating (7)；Second reflection-type optical fiber Bragg grating (7) it is another One end of the 3rd reflection-type optical fiber Bragg grating (8) of end connection；The common port of optical-fiber bundling device (2) connects the second gain fibre (4) one end；The other end of second gain fibre (4) connects one end of the 4th reflection-type optical fiber Bragg grating (9)；3rd is anti- Emitting Fiber Bragg Grating FBG (8) forms the first resonator with the 4th reflection-type optical fiber Bragg grating (9)；First reflection type optical Fine Bragg grating (6) forms the second resonator with the second reflection-type optical fiber Bragg grating (7)；The pump that pumping source (1) produces Pu light is entered in the first resonator by the pumping input terminal of optical-fiber bundling device (2), and the second gain fibre (4) is pumped Pu, the laser of formation enter in the second resonator through optical-fiber bundling device (2), the first reflection-type optical fiber Bragg grating (6), to the One gain fibre (3) carries out pumping and produces another wavelength laser, another wavelength laser that the second resonator produces passes through successively Optical-fiber bundling device (2), the second gain fibre (4), the 4th reflection-type optical fiber Bragg grating (9), optoisolator (10) output.
- 2. the compound dual-cavity laser of all -fiber pulse according to claim 1, it is characterised in that：First reflection-type Fiber Bragg Grating FBG (6), the second reflection-type optical fiber Bragg grating (7), the 3rd reflection-type optical fiber Bragg grating (8), The reflectivity of four reflection-type optical fiber Bragg gratings (9) is R, wherein, 0<R<1.
- A kind of 3. compound dual-cavity laser of all -fiber pulse, it is characterised in that including：Pumping source (1), optical-fiber bundling device (2), One gain fibre (3), the second gain fibre (4), transition optical fiber (5), the first reflection-type optical fiber Bragg grating (6), laser point Beam device (0), the 4th reflection-type optical fiber Bragg grating (9), optoisolator (10)；Wherein, the pumping input terminal of pumping source (1) the connection optical-fiber bundling device (2)；The signal end connection of optical-fiber bundling device (2) One end of transition optical fiber (5)；The other end of transition optical fiber (5) connects one end of the first gain fibre (3)；First gain fibre (3) one end (0) of other end connection laser beam splitter；Two output terminals of the other end of laser beam splitter are connected directly to form light Ring；The common port of optical-fiber bundling device (2) connects one end of the second gain fibre (4)；The other end connection of second gain fibre (4) One end of 4th reflection-type optical fiber Bragg grating (9)；Laser beam splitter (0) and the 4th reflection-type optical fiber Bragg grating (10) Form the first resonator；First reflection-type optical fiber Bragg grating (6) forms the second resonator with laser beam splitter (7)；Pumping The pump light that source (1) produces is entered in the first resonator by the pumping input terminal of optical-fiber bundling device (2), to the second gain light Fine (4) carry out pumping, and the laser of formation is humorous into second through optical-fiber bundling device (2), the first reflection-type optical fiber Bragg grating (6) Shake intracavitary, pumping is carried out to the first gain fibre (3) and produces another wavelength laser, another wavelength that the second resonator produces Laser is successively through optical-fiber bundling device (2), the second gain fibre (4), the 4th reflection-type optical fiber Bragg grating (9), optoisolator (10) export.
- 4. the compound dual-cavity laser of all -fiber pulse according to claim 3, it is characterised in that：First reflection-type Fiber Bragg Grating FBG (6), the reflectivity of the 4th reflection-type optical fiber Bragg grating (9) they are R, wherein, 0<R<1.
- 5. the compound dual-cavity laser of all -fiber pulse according to claim 1 and 3, it is characterised in that：The pumping source (1) it is semiconductor laser, solid state laser, gas laser, optical fiber laser, Ramar laser one kind therein, output The scope of the centre wavelength of pump light is：700nm≤λ≤2000nm, the pump mode is the single-ended pumping of fibre core, fibre core is double The single-ended pumping of end-pumping, covering, covering both-end pumping one kind therein.
- 6. the compound dual-cavity laser of all -fiber pulse according to claim 1 and 3, it is characterised in that：The optical fiber closes Beam device (2) is the optical-fiber bundling device of (2+1) × 1 or the optical-fiber bundling device of (6+1) × 1.
- 7. the compound dual-cavity laser of all -fiber pulse according to claim 1 and 3, it is characterised in that described first increases Beneficial optical fiber (3), the second gain fibre (4) be mixed with rare earth element polarization maintaining optical fibre or photonic crystal polarization maintaining optical fibre, the doping Rare earth element for ytterbium (Yb), erbium (Er), holmium (Ho), thulium (Tm), neodymium (Nd), chromium (Cr), samarium (Sm), bismuth (Bi) one kind therein It is or several.
- 8. the compound dual-cavity laser of all -fiber pulse according to claim 1 and 3, it is characterised in that：First gain fibre (3) core diameter of the second gain fibres of core diameter ＜ (4) of core diameter ＜ transition optical fibers (5).
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Cited By (5)
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| CN108832470A (en) * | 2018-06-05 | 2018-11-16 | 天津凯普林光电科技有限公司 | A kind of optical fiber laser |
| WO2021115145A1 (en) * | 2019-12-10 | 2021-06-17 | 苏州创鑫激光科技有限公司 | Fiber laser |
| CN113708204A (en) * | 2021-09-26 | 2021-11-26 | 中国科学院半导体研究所 | Multi-cavity composite pulse laser and multi-cavity composite pulse laser amplifier |
| CN114361923A (en) * | 2021-12-29 | 2022-04-15 | 北京工业大学 | Mid-infrared parametric oscillator based on all-fiber laser pumping |
| CN114552343A (en) * | 2022-01-18 | 2022-05-27 | 天津大学 | All-fiber single-frequency pulse laser |
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| CN106410576A (en) * | 2016-08-28 | 2017-02-15 | 北京工业大学 | Linear polarization output all-fiber pulse dual-cavity lasers |
| CN207910227U (en) * | 2017-12-13 | 2018-09-25 | 北京工业大学 | A kind of compound dual-cavity laser of all -fiber pulse |
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| CN102684050A (en) * | 2012-05-16 | 2012-09-19 | 清华大学 | Laser amplifier and laser amplifying system with same |
| CN103701021A (en) * | 2013-12-17 | 2014-04-02 | 北京工业大学 | All-fiber pulse laser utilizing cross modulation of resonant cavities |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108832470A (en) * | 2018-06-05 | 2018-11-16 | 天津凯普林光电科技有限公司 | A kind of optical fiber laser |
| WO2021115145A1 (en) * | 2019-12-10 | 2021-06-17 | 苏州创鑫激光科技有限公司 | Fiber laser |
| CN113708204A (en) * | 2021-09-26 | 2021-11-26 | 中国科学院半导体研究所 | Multi-cavity composite pulse laser and multi-cavity composite pulse laser amplifier |
| CN114361923A (en) * | 2021-12-29 | 2022-04-15 | 北京工业大学 | Mid-infrared parametric oscillator based on all-fiber laser pumping |
| CN114552343A (en) * | 2022-01-18 | 2022-05-27 | 天津大学 | All-fiber single-frequency pulse laser |
| CN114552343B (en) * | 2022-01-18 | 2024-01-19 | 天津大学 | All-fiber single-frequency pulse laser |
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Application publication date: 20180427 |