CN106207725A - A kind of 1030nm laser amplifier based on Yb dosed optical fiber - Google Patents
A kind of 1030nm laser amplifier based on Yb dosed optical fiber Download PDFInfo
- Publication number
- CN106207725A CN106207725A CN201610847874.XA CN201610847874A CN106207725A CN 106207725 A CN106207725 A CN 106207725A CN 201610847874 A CN201610847874 A CN 201610847874A CN 106207725 A CN106207725 A CN 106207725A
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- Prior art keywords
- amplifier
- laser
- fiber
- optical fiber
- laser beam
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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
- H01S3/05—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
-
- 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
- H01S3/06754—Fibre amplifiers
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
The invention provides a kind of 1030nm laser amplifier based on Yb dosed optical fiber, the program includes the agitator as 1030nm seed source, filtering system and amplifier, and the laser beam that agitator sends carries out power amplification by entering amplifier after filtering system；Laser beam constraint is transmitted in a fiber；In amplifier, all of optical fibre device is all attached by the way of welding.The program uses 1030nm single-mode fiber agitator as seed source, realizes 1030nm high efficiency by one-level structure for amplifying and exports.By optimizing design agitator and the parameter of amplifier and adding the methods such as filtering system, make up at Yb dosed optical fiber short-and-medium wavelength laser amplification procedure ASE(Amplified Spontaneous Emission, amplified spontaneous emission) serious, the deficiency such as Output of laser signal to noise ratio is low and reliability is poor, it is achieved 1030nm high efficiency, high s/n ratio and high reliability output.
Description
Technical field
The present invention relates to laser application field, a kind of 1030nm laser amplifier based on Yb dosed optical fiber
Device.
Background technology
In the prior art, known technology is that high-power 1030nm laser swashs at laser medicine, laser radar, solid
The numerous areas such as light seed source have urgent application demand.Laser amplifier based on Yb dosed optical fiber is to produce 1030nm laser
One of effective way.
Laser amplifier principle based on Yb dosed optical fiber, owing to Yb dosed optical fiber absorbs relevant to wavelength with emission cross section parameter,
Compared to the commonly used wave band (such as 1060-1080nm) of Yb dosed optical fiber, 1030nm laser high power to be realized and high efficiency are defeated
Go out to there is bigger difficulty.When laser power is higher, ASE constantly amplifies in communication process in optical fiber, causes ASE power notable
Increase, efficiency and the stability of amplifier are greatly reduced.Therefore ASE will be in 1030nm laser amplifier design parameter
Significant consideration.In order to solve the low problem with poor stability of 1030nm optical fiber laser amplifier efficiency, it is proposed that Yi Zhongji
High efficiency 1030nm laser amplifier technology in Yb dosed optical fiber.
Summary of the invention
The purpose of the present invention, it is simply that for the deficiency existing for prior art, and provide a kind of based on Yb dosed optical fiber
1030nm laser amplifier, program employing 1030nm single-mode fiber agitator is as seed source, real by one-level structure for amplifying
Existing 1030nm high efficiency output.By optimizing design agitator and the parameter of amplifier and adding the methods such as filtering system, more
Mend, the deficiency such as signal to noise ratio low and reliability poor serious at Yb dosed optical fiber short-and-medium wavelength laser amplification procedure ASE, it is achieved 1030nm
High efficiency, high s/n ratio and high reliability output.
This programme is achieved by the following technical measures:
A kind of 1030nm laser amplifier based on Yb dosed optical fiber, includes the agitator as 1030nm seed source, filtering system
System and amplifier, the laser beam that agitator sends carries out power amplification by entering amplifier after filtering system；Laser beam bundle
Tie up and transmit in a fiber；In amplifier, all of optical fibre device is all attached by the way of welding.
Preferred as this programme: be provided with oscillator pump source, the high anti-fiber grating of 1030nm in agitator, mix ytterbium list
Mode fiber, the low anti-fiber grating of 1030nm and agitator CPS；The laser beam that pumping source sends sequentially passes through the high reflective fibre of 1030nm
Grating, mixes ytterbium single-mode fiber, exports to filtering system after the low anti-fiber grating of 1030nm and CPS.
Preferred as this programme: filtering system includes 1030nm narrow band filter and 1030nm isolator；Input filter
The laser beam of wave system system exports to amplifier after sequentially passing through 1030nm narrow band filter and 1030nm isolator.
Preferred as this programme: 1030nm narrow band filter and 1030nm isolator all derive arm with light echo.
Preferred as this programme: amplifier includes MFA, amplifier pumping source, bonder, mixes ytterbium multimode fibre, puts
Big device CPS and output collimation unit；The laser beam of input amplifier is once by MFA, after bonder, enters and mixes ytterbium multimode fibre
Being amplified, the laser beam entrance amplifier CPS after amplification carries out cladding light and filters, and last laser beam is by output collimation unit
Transmission is to free space.
Preferred as this programme: amplifier pumping source provides pumping for bonder.
The beneficial effect of this programme can be learnt, due to agitator conduct in this scenario according to the narration of such scheme
The seed source of 1030nm amplifier, by mix ytterbium single-mode optical fiber length, the reflectance of the high anti-fiber grating of 1030nm and
The design of the reflectance of the low anti-fiber grating of 1030nm, can be effectively improved the signal to noise ratio of seed source；By adding filtering system, can
The signal to noise ratio of further seed light and the stability of raising system；By to length and the core mixing ytterbium multimode fibre in amplifier
The design in footpath, can effectively suppress the ASE that amplification process produces.1030nm high efficiency, height can be realized by above reasonably design
Signal to noise ratio and high reliability output.
As can be seen here, the present invention compared with prior art, has substantive distinguishing features and progress, and its beneficial effect implemented is also
It is apparent from.
Accompanying drawing explanation
Fig. 1 is light channel structure schematic diagram of the present invention.
In figure, 1 is agitator, and 2 is oscillator pump source, and 3 is the high anti-fiber grating of 1030nm, and 4 for mixing ytterbium single-mode fiber,
5 is the low anti-fiber grating of 1030nm, and 6 is agitator CPS, and 7 is filtering system, and 8 is 1030nm narrow band filter, and 9 is 1030nm
Isolator, 10 is amplifier, and 11 is MFA, and 12 is amplifier pumping source, and 13 is bonder, and 14 for mixing ytterbium multimode fibre, and 15 for putting
Big device CPS, 16 is output collimation unit.
Detailed description of the invention
All features disclosed in this specification, or disclosed all methods or during step, except mutually exclusive
Feature and/or step beyond, all can combine by any way.
Any feature disclosed in this specification (including any accessory claim, summary and accompanying drawing), unless chatted especially
State, all can be by other equivalences or there is the alternative features of similar purpose replaced.I.e., unless specifically stated otherwise, each feature is only
It it is an example in a series of equivalence or similar characteristics.
By accompanying drawing it can be seen that the present invention provide high efficiency 1030nm laser amplifier bag based on Yb dosed optical fiber
Include: agitator 1, oscillator pump source 2, the high anti-fiber grating 3 of 1030nm, mix ytterbium single-mode fiber 4, the low anti-fiber grating of 1030nm
5, agitator CPS6, filtering system 7,1030nm narrow band filter 8,1030nm isolator 9, amplifier 10, MFA11, amplifier
Pumping source 12, bonder 13, mix ytterbium multimode fibre 14, amplifier CPS15, export collimation unit 16.Agitator 1 is by agitator pump
Source, Pu 2, the high anti-fiber grating 3 of 1030nm, mix ytterbium single-mode fiber 4, the low anti-fiber grating 5 of 1030nm and agitator CPS6 composition,
Mix the length of ytterbium single-mode fiber 4, high anti-fiber grating 3 reflectance of 1030nm and low anti-fiber grating 5 reflectance of 1030nm all
Set through strict so that the ASE in the output spectrum of agitator 1 is effectively suppressed.Filtering system 7 is filtered by 1030nm arrowband
Ripple device 8 and 1030nm isolator 9 forms, and can be effectively improved signal to noise ratio and the reliability of laser instrument.Amplifier 10, by MFA11, is put
Big device pumping source 12, bonder 13, mix ytterbium multimode fibre 14, amplifier CPS15, output collimation unit 16 forms, and mixes ytterbium multimode
The length of optical fiber 14 and core diameter all pass through strict setting so that amplifier 10 effectively suppresses output spectrum while efficiently output
In ASE.
The specific embodiment of the present invention:
Detailed description of the invention one:
Oscillator pump source 2 in agitator 1 uses the tail optical fiber DL(Diode Laser of centre wavelength 976nm, diode laser
Device).The high anti-fiber grating 3 of 1030nm is to pump light high-transmission rate, to 1030nm laser high reflectance.Mix ytterbium single-mode fiber 4 to adopt
With the single-mode ytterbium-doping optical fiber of double clad.The low anti-fiber grating 5 of 1030nm is to pump light high-transmission rate, reflection low to 1030nm laser
Rate.Remaining pump light can be revealed by agitator CPS6, and pump light filters ratio and typically should be greater than 15dB.
1030nm narrow band filter 8 in filtering system 7, for filtering the ASE that agitator 1 produces, improves laser after amplifying
The signal to noise ratio of output, the bandwidth of narrow band filter 8 should be less than 8nm；1030nm isolator 9 is used for the light echo of isolated amplifier 10,
The stability of raising system.
MFA11 in amplifier 10, for single-mode fiber and multimode fibre carry out pattern match, reduces the pattern of system
Distortion.Amplifier pumping source 12 uses the tail optical fiber DL of centre wavelength 976nm.Bonder 13 for by the laser of 1030nm and
The coupling pump light of 976nm enters to mix ytterbium multimode fibre 14, the size of its signal optical fibre and pumping optical fiber respectively with mix ytterbium multimode light
Fine 14 mate with the optical fiber in amplifier pumping source 12.That mixes that ytterbium multimode fibre 14 uses double clad mixes ytterbium multimode fibre, amplifier
Remaining pump light can be revealed by CPS15, and pump light filters ratio and typically should be greater than 15dB.Output collimation unit 16 is used for will
1030nm laser alignment is transmitted to free space.
The length of ytterbium single-mode fiber 4,1030nm high anti-fiber grating 3 reflectance, the low reflective fibre of 1030nm is mixed by design
The reflectance of grating 5 and length and the core diameter of mixing ytterbium multimode fibre 14, can realize high efficiency 1030nm based on Yb dosed optical fiber and swash
Light amplification exports.
Detailed description of the invention two:
Illustrate that present embodiment, present embodiment are with the difference described in embodiment one in conjunction with Fig. 1, the high reflective fibre of 1030nm
The low anti-fiber grating 5 of grating 3 and 1030nm all uses narrow linewidth fiber grating (bandwidth is less than 0.5nm).Ensureing laser output
In the case of efficiency, the length mixing ytterbium single-mode fiber 4 by design can effectively press down with the length and core diameter of mixing ytterbium multimode fibre 14
Spectrum widening in amplifier processed, in such cases, 1030nm laser can realize narrow linewidth output.
Detailed description of the invention three:
Illustrating that present embodiment, present embodiment are with the difference described in embodiment one in conjunction with Fig. 1,1030nm height is reflective
Fine grating 3, mixes ytterbium single-mode fiber 4, the low anti-fiber grating 5 of 1030nm, agitator CPS6,1030nm narrow band filter 8,1030nm
Isolator 9, MFA11, amplifier pumping source 12, bonder 13, mix ytterbium multimode fibre 14, amplifier CPS15 and output collimation single
Signal optical fibre in unit 16 all uses polarization maintaining optical fibre, and in such cases, 1030nm laser can realize linear polarization output.
Detailed description of the invention four:
Illustrate that present embodiment, present embodiment are with the difference described in embodiment one in conjunction with Fig. 1, the high reflective fibre of 1030nm
The low anti-fiber grating 5 of grating 3 and 1030nm all uses narrow linewidth fiber grating (bandwidth is less than 0.5nm).Ytterbium list is mixed by design
The length of mode fiber 4 and mix the length of ytterbium multimode fibre 14 and core diameter can the effective spectrum widening in rejective amplifier.1030nm
High anti-fiber grating 3, mixes ytterbium single-mode fiber 4, the low anti-fiber grating 5 of 1030nm, agitator CPS6,1030nm narrow band filter 8,
1030nm isolator 9, MFA11, amplifier pumping source 12, bonder 13, mix ytterbium multimode fibre 14, amplifier CPS15 and output
Signal optical fibre in collimation unit 16 all uses polarization maintaining optical fibre, and in such cases, 1030nm laser can realize linear polarization simultaneously
Export with narrow linewidth.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.
The invention is not limited in aforesaid detailed description of the invention.The present invention expands to any disclose in this manual
New feature or any new combination, and the arbitrary new method that discloses or the step of process or any new combination.
Claims (6)
1. a 1030nm laser amplifier based on Yb dosed optical fiber, is characterized in that: include shaking as 1030nm seed source
Swing device, filtering system and amplifier, it is characterized in that: the laser beam that described agitator sends amplifies by entering after filtering system
Device carries out power amplification；The constraint of described laser beam is transmitted in a fiber；In described amplifier, all of optical fibre device is all by molten
The mode connect is attached.
A kind of 1030nm laser amplifier based on Yb dosed optical fiber the most according to claim 1, is characterized in that: described vibration
It is provided with oscillator pump source, the high anti-fiber grating of 1030nm in device, mixes ytterbium single-mode fiber, the low anti-fiber grating of 1030nm and shaking
Swing device CPS；The laser beam that described pumping source sends sequentially passes through the high anti-fiber grating of 1030nm, mixes ytterbium single-mode fiber, 1030nm
Export to filtering system after low anti-fiber grating and CPS.
A kind of 1030nm laser amplifier based on Yb dosed optical fiber the most according to claim 1, is characterized in that: described filtering
System includes 1030nm narrow band filter and 1030nm isolator；The laser beam of described input filter system sequentially passes through
Export to amplifier after 1030nm narrow band filter and 1030nm isolator.
A kind of 1030nm laser amplifier based on Yb dosed optical fiber the most according to claim 1, is characterized in that: described
1030nm narrow band filter and 1030nm isolator all derive arm with light echo.
A kind of 1030nm laser amplifier based on Yb dosed optical fiber the most according to claim 1, is characterized in that: described amplification
Device includes MFA, amplifier pumping source, bonder, mixes ytterbium multimode fibre, amplifier CPS and output collimation unit；Described input
The laser beam of amplifier is once by MFA, and after bonder, entrance is mixed ytterbium multimode fibre and is amplified, and the laser beam after amplification enters
Entering amplifier CPS to carry out cladding light and filter, last laser beam is transmitted to free space by output collimation unit.
A kind of 1030nm laser amplifier based on Yb dosed optical fiber the most according to claim 5, is characterized in that: described amplification
Device pumping source provides pumping for bonder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610847874.XA CN106207725A (en) | 2016-09-26 | 2016-09-26 | A kind of 1030nm laser amplifier based on Yb dosed optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610847874.XA CN106207725A (en) | 2016-09-26 | 2016-09-26 | A kind of 1030nm laser amplifier based on Yb dosed optical fiber |
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| CN106207725A true CN106207725A (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610847874.XA Pending CN106207725A (en) | 2016-09-26 | 2016-09-26 | A kind of 1030nm laser amplifier based on Yb dosed optical fiber |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112717154A (en) * | 2020-12-22 | 2021-04-30 | 武汉菩济医疗科技有限公司 | Object surface virus killing system and virus killing machine based on ultrafast laser |
| CN112787207A (en) * | 2021-02-05 | 2021-05-11 | 中国人民解放军国防科技大学 | High-power narrow linewidth optical fiber laser based on ring cavity oscillator seed source |
| CN113745954A (en) * | 2020-05-27 | 2021-12-03 | 山东大学 | Light beam pointing stabilization system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113745954A (en) * | 2020-05-27 | 2021-12-03 | 山东大学 | Light beam pointing stabilization system |
| CN112717154A (en) * | 2020-12-22 | 2021-04-30 | 武汉菩济医疗科技有限公司 | Object surface virus killing system and virus killing machine based on ultrafast laser |
| CN112787207A (en) * | 2021-02-05 | 2021-05-11 | 中国人民解放军国防科技大学 | High-power narrow linewidth optical fiber laser based on ring cavity oscillator seed source |
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