CN102891426A - Ytterbium-doped fiber laser - Google Patents
Ytterbium-doped fiber laser Download PDFInfo
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- CN102891426A CN102891426A CN2011104580534A CN201110458053A CN102891426A CN 102891426 A CN102891426 A CN 102891426A CN 2011104580534 A CN2011104580534 A CN 2011104580534A CN 201110458053 A CN201110458053 A CN 201110458053A CN 102891426 A CN102891426 A CN 102891426A
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- ytterbium
- laser
- optical fiber
- fiber laser
- doping optical
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Abstract
The invention discloses an ytterbium-doped fiber laser. The ytterbium-doped fiber laser comprises a pump source and a ytterbium-doped gain fiber laser main body pumped by the pump source, and is characterized in that the pump source is a solid-state laser; and a laser crystal of the solid-state laser takes neodymium ions of which the transition spectral line is <4>F3/2 to <4>I9/2 as a gain medium. By a high-brightness high-power pump of the ytterbium-doped fiber laser, single-point high-power pump coupling can be ensured; the coupling difficulty of a pump laser entering a gain fiber is greatly reduced; the output wavelength of the pump laser is stable; and complex temperature control is not required.
Description
Technical field
The present invention relates to the laser technique field, relate in particular to a kind of ytterbium-doping optical fiber laser.
Background technology
Ytterbium-doping optical fiber laser is to obtain high power, high brightness laser output about 1um at wavelength.It is had a wide range of applications in fields such as industrial processes, military affairs.Yet, in order to obtain more high-power output, just need more high-power pumping laser is coupled into gain fibre.
Because Yb dosed optical fiber has stronger absworption peak near 915nm and 975nm, so, usually adopt the semiconductor laser of this wavelength output as the pumping source of high-capacity optical fiber laser.But the brightness of semiconductor laser Output of laser is limited, can't obtain the output of high power basic mode.This has greatly limited the pumping coupled power of single-point entry gain fibre.In addition, the laser output wavelength of semiconductor laser is larger with drive current and variation of ambient temperature, and the extremely difficult wavelength stabilization that obtains is exported, and causes its application at the ultra high power optical-fiber laser to be restricted.
Summary of the invention
The technical problem that (one) will solve
The technical problem to be solved in the present invention is: a kind of ytterbium-doping optical fiber laser is provided, to improve fiber laser single-point pumping coupled power, further improves the power output level of fiber laser.
(2) technical scheme
For addressing the above problem, the invention provides a kind of ytterbium-doping optical fiber laser, comprise pumping source and by described pumping source pumping mix ytterbium gain fibre laser bodies, described pumping source is solid state laser, the laser crystal of described solid state laser take the transition spectral line as
4F
3/2→
4I
9/2Neodymium ion as gain media.
Preferably, described solid state laser also comprises the pump arrangement resonant cavity, and described laser crystal is between described resonant cavity.
Preferably, described solid state laser also comprises the coupling output block.
Preferably, described ytterbium-doping optical fiber laser is all optical fibre structure, the coupling output block of described solid state laser comprises coupling output lens group and the tail optical fiber that the output of described coupling output lens group is sent out, and described ytterbium-doping optical fiber laser comprises that also the output with described tail optical fiber is coupled to described fiber end face pumping coupler or the optical fiber side pumping coupler of mixing ytterbium gain fibre laser bodies.
Preferably, described ytterbium-doping optical fiber laser is separated structure, described coupling output block with the output of described solid state laser be coupled to described mix ytterbium gain fibre laser gain fibre in.
Preferably, ytterbium-doping optical fiber laser is the main oscillations level, and the described ytterbium gain fibre laser bodies of mixing comprises and mixes the ytterbium gain fibre and be positioned at the described chamber mirror of mixing ytterbium gain fibre two ends.
Preferably, described ytterbium-doping optical fiber laser is all optical fibre structure, and described chamber mirror is fiber grating.
Preferably, described ytterbium-doping optical fiber laser is separated structure, and described chamber mirror is the speculum that is coated with reflective film.
Preferably, described ytterbium-doping optical fiber laser is amplifying stage, and the described ytterbium gain fibre laser bodies of mixing comprises and mixes the ytterbium gain fibre and mix the laser seed source that ytterbium gain fibre input is connected with described.
Preferably, described ytterbium-doping optical fiber laser comprise the main oscillations level and with at least one amplifying stage of described main oscillations level cascade.
Preferably, the described ytterbium gain fibre of mixing is single cladded fiber or multi-clad; Polarization maintaining optical fibre or photonic crystal fiber; It is shaped as conical fiber, ordinary optic fibre or other structured optical fibers.
Preferably, described laser seed source is the solid state laser of single mode fiber laser, multimode optical fibre laser device, free space output solid state laser or single mode or multimode pigtail output.
(3) beneficial effect
The solid state laser that technique scheme employing neodymium ion of the present invention is gain media as pumping source at the transition spectral line is
4F
3/2→
4I
9/2Nearly single mode 912nm left and right sides Laser output can be provided, and is Wavelength stabilized high power pump source.High brightness high power pumping of the present invention can guarantee the coupling of single-point high power pump; High brightness characteristic greatly reduces the coupling difficulty that pumping laser enters gain fibre; The pumping laser stable output wavelength need not complicated temperature control.
Description of drawings
Fig. 1 is the structural representation according to the embodiment of the invention one laser;
Fig. 2 is the structural representation according to embodiment of the invention dual-laser device;
Fig. 3 is the structural representation according to the embodiment of the invention three lasers;
Fig. 4 is the structural representation according to the embodiment of the invention four lasers;
Wherein, 101: pump arrangement; 102: resonant cavity; 103: laser crystal; 104: coupling output lens group; 105: tail optical fiber; 106: mix the ytterbium gain fibre; 107: the fiber end face pumping coupler; 108a: fiber grating; 108b: fiber grating; 109: pumping source; 110: end cap;
201: pump arrangement; 202: resonant cavity; 203: laser crystal; 204: coupling output lens group; 206: mix the ytterbium gain fibre; 209: pumping source; 212: the chamber mirror;
301: pump arrangement; 302: resonant cavity; 303: laser crystal; 304: coupling output lens group; 305: tail optical fiber; 306: mix the ytterbium gain fibre; 309: pumping source; 310: end cap; 313: the laser seed source; 314: optical fiber side pumping coupler;
401: pump arrangement; 402: resonant cavity; 403: laser crystal; 404: coupling output lens group; 405: tail optical fiber; 406: mix the ytterbium gain fibre; 407: the fiber end face pumping coupler; 408a: fiber grating; 408b: fiber grating; 409: pumping source; 410: end cap; 413: the laser seed source; 414: optical fiber side pumping coupler.
Embodiment
That the present invention is described in detail is as follows below in conjunction with drawings and Examples.
Embodiment one:
As shown in Figure 1, the present embodiment has been put down in writing a kind of all optical fibre structure ytterbium-doping optical fiber laser as the main oscillations level, comprises pumping source 109 and mixes ytterbium gain fibre laser bodies by described pumping source 109 pumpings.
The described ytterbium gain fibre laser bodies of mixing comprises and mixes ytterbium gain fibre 106, is positioned at described fiber grating 108a, the 108b that mixes ytterbium gain fibre 106 two ends, and the end cap 110 that is positioned at output.Wherein fiber grating 108a is that reflectivity is 99% high reflectance fiber grating, and the fiber grating 108b of close end cap 110 is that reflectivity is 10% antiradar reflectivity fiber grating.The main oscillations level of all optical fibre structure becomes optical-fiber laser output with the pump light of the pumping source output harmonic conversion by fiber grating 108a, 108b.
Described pumping source 109 is solid state laser, the laser crystal 103 of described solid state laser take the transition spectral line as
4F
3/2→
4I
9/2Neodymium ion as gain media.In the present embodiment, described laser crystal 103 is the Nd:GdVO of laser output wavelength 912nm
4Crystal.
Described solid state laser also comprises pump arrangement 101 resonant cavity 102, and described laser crystal 103 is between described resonant cavity 102.
Described solid state laser also comprises the coupling output block.The coupling output block of described solid state laser comprises coupling output lens group 104 and the tail optical fiber 105 that the output of described coupling output lens group 104 is sent out, and described ytterbium-doping optical fiber laser comprises that also the output coupling with described tail optical fiber 105 is injected into the described fiber end face pumping coupler 107 of mixing in the ytterbium gain fibre 106.
Embodiment two:
As shown in Figure 2, the present embodiment has been put down in writing a kind of separated structure ytterbium-doping optical fiber laser as the main oscillations level, comprises pumping source 209 and mixes ytterbium gain fibre laser bodies by described pumping source 209 pumpings.
The described ytterbium gain fibre laser bodies of mixing comprises and mixes ytterbium gain fibre 206 and be positioned at the described chamber mirror 212 of mixing ytterbium gain fibre 206 two ends.The main oscillations level of separate structure becomes optical-fiber laser output with the pump light of pumping source 209 outputs by chamber mirror 212 harmonic conversion.
Described pumping source 209 is solid state laser, resonant cavity 202, the laser crystal 203 between described resonant cavity 202 and coupling output block that described solid state laser comprises pump arrangement 201, is made of the pump cavity mirror, described laser crystal 203 take the transition spectral line as
4F
3/2→
4I
9/2Neodymium ion as gain media.In the present embodiment, described laser crystal is the Nd:YVO of laser output wavelength 914nm
4Crystal.Described coupling output block is injected into described coupling output lens group 204 of mixing in the ytterbium gain fibre 206 for the output direct-coupling with described solid state laser 209.
Embodiment three:
As shown in Figure 3, the present embodiment has been put down in writing a kind of all optical fibre structure ytterbium-doping optical fiber laser as amplifying stage, comprises pumping source 309 and mixes ytterbium gain fibre laser bodies by described pumping source 309 pumpings.
Described pumping source 309 is solid state laser, and described solid state laser comprises pump arrangement 301, resonant cavity 302, the laser crystal 303 between described resonant cavity 302 and coupling output block.Described laser crystal 303 take the transition spectral line as
4F
3/2→
4I
9/2Neodymium ion as gain media.Described coupling output block comprises coupling output lens group 304 and the multimode pigtail 305 that the output of described coupling output lens group 304 is sent out.In the present embodiment, described laser crystal 303 is the Nd:GdVO of 912nm for laser output wavelength
4Crystal.
The described ytterbium gain fibre laser bodies of mixing comprises and mixes ytterbium gain fibre 306, mixes the laser seed source 313 that ytterbium gain fibre 306 inputs are connected with described, and the output coupling of described tail optical fiber 305 is injected into the described end cap 310 of mixing the optical fiber side pumping coupler 314 of ytterbium gain fibre 306 and being positioned at output.
The ytterbium gain fibre laser bodies of mixing of the present embodiment is exported the Laser output amplification in described laser seed source 313 afterwards from optical fiber end cap 310.
Embodiment four:
The present embodiment has been put down in writing a kind of ytterbium-doping optical fiber laser of all optical fibre structure.As shown in Figure 4, the present embodiment is as the laser seed source 413 among the embodiment three, form with the amplifying stage laser cascade of embodiment three with the main oscillations level laser device among the embodiment one.
The present invention adopts solid state laser as pumping source, can obtain the pumping laser of high brightness high power, is conducive to improve fiber laser single-point pumping coupled power, further improves fiber laser power output level
Above execution mode only is used for explanation the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; in the situation that do not break away from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.
Claims (10)
1. ytterbium-doping optical fiber laser, comprise pumping source and by described pumping source pumping mix ytterbium gain fibre laser bodies, it is characterized in that, described pumping source is solid state laser, the laser crystal of described solid state laser take the transition spectral line as
4F
3/2→
4I
9/2Neodymium ion as gain media.
2. ytterbium-doping optical fiber laser as claimed in claim 1 is characterized in that, described solid state laser also comprises the pump arrangement resonant cavity, and described laser crystal is between described resonant cavity.
3. ytterbium-doping optical fiber laser as claimed in claim 2 is characterized in that, described solid state laser also comprises the coupling output block.
4. ytterbium-doping optical fiber laser as claimed in claim 3, it is characterized in that, described ytterbium-doping optical fiber laser is all optical fibre structure, the coupling output block of described solid state laser comprises coupling output lens group and the tail optical fiber that the output of described coupling output lens group is sent out, and described ytterbium-doping optical fiber laser comprises that also the output with described tail optical fiber is coupled to described fiber end face pumping coupler or the optical fiber side pumping coupler of mixing ytterbium gain fibre laser bodies.
5. ytterbium-doping optical fiber laser as claimed in claim 3 is characterized in that, described ytterbium-doping optical fiber laser is separated structure, and described coupling output block is coupled to the output of described solid state laser in the described gain fibre of mixing ytterbium gain fibre laser.
6. ytterbium-doping optical fiber laser as claimed in claim 1 is characterized in that, ytterbium-doping optical fiber laser is the main oscillations level, and the described ytterbium gain fibre laser bodies of mixing comprises and mixes the ytterbium gain fibre and be positioned at the described chamber mirror of mixing ytterbium gain fibre two ends.
7. ytterbium-doping optical fiber laser as claimed in claim 6 is characterized in that, described ytterbium-doping optical fiber laser is all optical fibre structure, and described chamber mirror is fiber grating.
8. ytterbium-doping optical fiber laser as claimed in claim 6 is characterized in that, described ytterbium-doping optical fiber laser is separated structure, and described chamber mirror is the speculum that is coated with reflective film.
9. ytterbium-doping optical fiber laser as claimed in claim 1, it is characterized in that, described ytterbium-doping optical fiber laser is amplifying stage, and the described ytterbium gain fibre laser bodies of mixing comprises and mixes the ytterbium gain fibre and mix the laser seed source that ytterbium gain fibre input is connected with described.
10. such as claim 1 or 6 or 9 described ytterbium-doping optical fiber lasers, it is characterized in that, described ytterbium-doping optical fiber laser comprise the main oscillations level and with at least one amplifying stage of described main oscillations level cascade.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104580534A CN102891426A (en) | 2011-12-30 | 2011-12-30 | Ytterbium-doped fiber laser |
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|---|---|---|---|
| CN2011104580534A CN102891426A (en) | 2011-12-30 | 2011-12-30 | Ytterbium-doped fiber laser |
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| CN102891426A true CN102891426A (en) | 2013-01-23 |
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| CN2011104580534A Pending CN102891426A (en) | 2011-12-30 | 2011-12-30 | Ytterbium-doped fiber laser |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188392A (en) * | 2018-09-05 | 2019-01-11 | 哈尔滨工业大学 | A kind of detection device of remote small-signal |
| CN110190493A (en) * | 2019-05-29 | 2019-08-30 | 黄进土 | A kind of tail optical fiber profile pump coupling device of ytterbium-doped double-cladded-layer semiconductor laser |
| CN111541140A (en) * | 2020-04-02 | 2020-08-14 | 山东大学 | Yb-YAG ultrashort pulse laser amplifier based on brightness cascade pump |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08283096A (en) * | 1995-04-10 | 1996-10-29 | Nippon Telegr & Teleph Corp <Ntt> | Laser material |
| CN101083381A (en) * | 2006-05-30 | 2007-12-05 | 中国科学院西安光学精密机械研究所 | Semiconductor laser seed pulse main oscillation amplification all-fiber laser |
| CN101640367A (en) * | 2008-11-17 | 2010-02-03 | 武汉锐科光纤激光器技术有限责任公司 | Pulse full-fiber laser |
-
2011
- 2011-12-30 CN CN2011104580534A patent/CN102891426A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08283096A (en) * | 1995-04-10 | 1996-10-29 | Nippon Telegr & Teleph Corp <Ntt> | Laser material |
| CN101083381A (en) * | 2006-05-30 | 2007-12-05 | 中国科学院西安光学精密机械研究所 | Semiconductor laser seed pulse main oscillation amplification all-fiber laser |
| CN101640367A (en) * | 2008-11-17 | 2010-02-03 | 武汉锐科光纤激光器技术有限责任公司 | Pulse full-fiber laser |
Non-Patent Citations (1)
| Title |
|---|
| A. BOUCHIER ET AL.: "Single-mode Yb-doped fiber laser at 980 nm for efficient frequency-doubling", 《LASERS AND ELECTRO-OPTICS》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188392A (en) * | 2018-09-05 | 2019-01-11 | 哈尔滨工业大学 | A kind of detection device of remote small-signal |
| CN110190493A (en) * | 2019-05-29 | 2019-08-30 | 黄进土 | A kind of tail optical fiber profile pump coupling device of ytterbium-doped double-cladded-layer semiconductor laser |
| CN110190493B (en) * | 2019-05-29 | 2020-11-06 | 淮安奥正网络科技有限公司 | Tail fiber side pumping coupling device of ytterbium-doped double-cladding semiconductor laser |
| CN111541140A (en) * | 2020-04-02 | 2020-08-14 | 山东大学 | Yb-YAG ultrashort pulse laser amplifier based on brightness cascade pump |
| CN111541140B (en) * | 2020-04-02 | 2021-08-06 | 山东大学 | Yb-YAG ultrashort pulse laser amplifier based on brightness cascade pump |
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