CN103855596A - Ytterbium-mixed optical fiber amplification system - Google Patents
Ytterbium-mixed optical fiber amplification system Download PDFInfo
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- CN103855596A CN103855596A CN201210519665.4A CN201210519665A CN103855596A CN 103855596 A CN103855596 A CN 103855596A CN 201210519665 A CN201210519665 A CN 201210519665A CN 103855596 A CN103855596 A CN 103855596A
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Abstract
The invention provides an ytterbium-mixed optical fiber amplification system which comprises a seed resource Yb : YAG laser device, a beam coupling device and an ytterbium-mixed optical fiber power amplifier. Output laser of the Yb : YAG laser device is used as a seed source of the ytterbium-mixed optical fiber power amplifier, the seed source is injected into the ytterbium-mixed optical fiber power amplifier in a coupling mode for amplifying through the beam coupling device, and finally the seed source is output through an end cap. The difficulty of narrow linewidth short wave laser output obtaining in ytterbium-mixed optical fibers is greatly lowered, the structure is simple and reliable, and the system can be widely used in multiple fields.
Description
Technical field
The present invention relates to a kind of optical fiber power amplification system, particularly a kind of Yb dosed optical fiber amplification system using Yb:YAG (mixing ytterbium yttrium-aluminium-garnet) laser as seed source.
Background technology
Yb dosed optical fiber laser/amplifier is because of its higher light conversion efficiency, and gets more and more people's extensive concerning and obtain development at full speed.But because the absorption spectral line of emission of Yb dosed optical fiber is comparatively fixing, and Yb dosed optical fiber has larger gain peak at 1060nm place, in its gain band, be just difficult to be excited out compared with short-wave laser.If will obtain the laser of 1030nm～1050nm in Yb dosed optical fiber, just need to suppress near gain amplitude 1060nm, this is difficulty comparatively, even and can inspire the laser of shortwave, its bandwidth is also often larger.On the other hand, all as the application with fiber laser systems such as pumpings in, have larger demand for the short-wave laser of 1030nm～1050nm wave band.
Using solid state laser as aspect the seed source of fiber laser, forefathers have carried out some researchs.The people such as J.Limpert (High-power femtosecond Yb-doped fiberamplifier) are using the output pulse of Nd:glass (neodymium glass) laser as seed signal, in such as Yb dosed optical fiber, amplify, but the pulse signal being exaggerated as seed, at 1060nm wave band, does not belong to the shortwave output area of the Yb dosed optical fiber of setting forth above.The people (Up to85-W1030-nm Fiber Laser Synchronized to800-and1550-nmFemtosecond Lasers at79.5MHz) such as Kangwen Yang use ti sapphire laser as seed source, and the laser that leaches 1030nm from its Output of laser injects ytterbium doped optical fiber amplifier.Because the output center of ti sapphire laser is at 800nm wave band, its output power ratio at 1030nm wave band is lower, and the emission source with it as 1030nm signal can bring larger power loss and loss in efficiency.
Summary of the invention
(1) technical problem to be solved
The present invention, by a kind of Yb dosed optical fiber amplification system is provided, has solved the problem that is difficult to excite compared with short-wave laser.
(2) technical scheme
The invention provides a kind of Yb dosed optical fiber amplification system, it is characterized in that, this system comprises: Yb:YAG laser, light beam coupling device and at least one-level Yb dosed optical fiber power amplifier, wherein:
Yb:YAG laser is for generation of laser, as the seed source of Yb dosed optical fiber power amplifier;
Light beam coupling device, for the Output of laser of Yb:YAG laser is carried out to light beam coupling, and is injected in Yb dosed optical fiber power amplifier;
Yb dosed optical fiber power amplifier, for carrying out power amplification to the laser injecting by light beam coupling device;
The output optical fibre tail end welding of afterbody Yb dosed optical fiber power amplifier has end cap, as the output of Yb dosed optical fiber amplification system.
Preferably, described Yb:YAG laser is made up of the first pump arrangement, Yb:YAG crystal and laser mirror;
Described Yb dosed optical fiber power amplifier is made up of the second pump arrangement, pumping coupling device and Yb dosed optical fiber; The pump light that the second pump arrangement produces, injects Yb dosed optical fiber by the coupling of pumping coupling device; Yb dosed optical fiber carries out power amplification to the seed source laser injecting.
Preferably, described pumping coupling device, is end pumping bundling device, side pumping coupler or discrete Lens Coupling device.
Preferably, the pump light that the second pump arrangement of described Yb dosed optical fiber power amplifier produces, adopts end pumping or profile pump mode to inject the Yb dosed optical fiber of Yb dosed optical fiber power amplifier.
Preferably, described light beam coupling device is made up of discrete optical element or discrete optical element and passive fiber.
Preferably, Yb dosed optical fiber amplification system comprises multiple described Yb dosed optical fiber power amplifiers, adopts optical fiber to connect or the connection of discrete optical element between multiple Yb dosed optical fiber power amplifiers.
Preferably, mix ytterbium power amplifying system and comprise multiple Yb:YAG lasers; Each Yb:YAG laser is identical, or has different parameters aspect Output of laser wavelength, Output of laser pattern and/or Output of laser power.
(3) beneficial effect
1, the present invention adopts the seed source of Yb:YAG laser as ytterbium doped optical fiber amplifier, because it has larger output peak value at 1030nm and 1048nm wave band, thereby greatly reduces the difficulty that obtains 1030nm or 1048nm Laser output in Yb dosed optical fiber.
2, the mode that in the present invention, signal seed source injects, can suppress the Laser output of the larger wave band of gain (long wave) in Yb dosed optical fiber well, thereby in Yb dosed optical fiber, obtains the short-wave laser output of narrow linewidth.
3, the present invention adopts Yb dosed optical fiber to amplify, and can, at the wave band of the more difficult Output of laser of the Yb dosed optical fiber such as 1030nm or 1048nm, obtain high-power Laser output.
4, the present invention compares direct use Yb dosed optical fiber and excites the mode of short-wave laser, has saved a pair of fiber grating, thereby has greatly reduced the cost of building laser system.
5, system configuration of the present invention stable, reliable, be easy to realize, can be widely used in need to be compared with the every field of short-wave laser output.
Accompanying drawing explanation
Fig. 1 is the structural representation of Yb dosed optical fiber power amplifying system;
Fig. 2 adopts discrete light beam coupling device seed source to be injected to the Yb dosed optical fiber amplification system of ytterbium doped optical fiber amplifier;
Fig. 3 adopts discrete optical element and passive fiber seed source to be injected to the Yb dosed optical fiber amplifying fiber of ytterbium doped optical fiber amplifier;
Fig. 4 be the present invention adopt two-stage ytterbium doped optical fiber amplifier mix ytterbium amplification system;
Fig. 5 adopts the parallel Yb dosed optical fiber amplification system of injecting in three Yb:YAG laser seed sources.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details.
The invention provides a kind of Yb dosed optical fiber amplification system, as shown in Figure 1, this system comprises: Yb:YAG laser, light beam coupling device and at least Yb dosed optical fiber power amplifier;
Wherein Yb:YAG laser produces laser, as the seed source of ytterbium doped optical fiber amplifier;
Adopt the seed source of Yb:YAG laser as ytterbium doped optical fiber amplifier, because it has larger output peak value at 1030nm and 1048nm wave band, thereby greatly reduce the difficulty that obtains 1030nm or 1048nm Laser output in Yb dosed optical fiber.
Light beam coupling device, for the laser of laser output is carried out to light beam coupling, and is injected into the Yb dosed optical fiber of fiber optic power amplifier;
By shortwave seed source injection mode, can suppress well the Laser output of the larger wave band of gain (long wave) in Yb dosed optical fiber, thereby in Yb dosed optical fiber, obtain the short-wave laser output of narrow linewidth.
Yb dosed optical fiber power amplifier, amplifies the laser injecting by light beam coupling device.
The output optical fibre tail end welding of afterbody Yb dosed optical fiber power amplifier has end cap, as the output of Yb dosed optical fiber amplification system.
Described Yb:YAG laser is made up of the first pump arrangement, Yb:YAG crystal and laser mirror;
Described Yb dosed optical fiber power amplifier is made up of the second pump arrangement, pumping coupling device and Yb dosed optical fiber; The pump light that the second pump arrangement produces, injects Yb dosed optical fiber by the coupling of pumping coupling device; Yb dosed optical fiber carries out power amplification to the seed source laser injecting.
Described pumping coupling device is end pumping bundling device, side pumping coupler or discrete Lens Coupling device.
The pump light that the second pump arrangement of described Yb dosed optical fiber power amplifier produces, adopts end pumping or profile pump mode to inject the Yb dosed optical fiber of Yb dosed optical fiber power amplifier.
Described light beam coupling device is made up of discrete optical element or discrete optical element and passive fiber.
Yb dosed optical fiber amplification system comprises multiple described Yb dosed optical fiber power amplifiers, adopts optical fiber to connect or the connection of discrete optical element between multiple Yb dosed optical fiber power amplifiers.
Mix ytterbium power amplifying system and comprise multiple Yb:YAG lasers; Each Yb:YAG laser is identical, or has different parameters aspect Output of laser wavelength, Output of laser pattern and/or Output of laser power.
Concrete, this device is:
As shown in Figure 2, native system is to adopt discrete light beam coupling device seed source to be injected to the optical fiber amplification system of Yb dosed optical fiber.The first pump arrangement (1), Yb:YAG crystal (2), plated film chamber mirror (3) and coupled lens group (4) form the Yb:YAG laser as seed source, and the pump light of the first pump arrangement (1) output injects Yb:YAG crystal (2) by coupled lens group (4) coupling.The 1030nm laser of laser output is via light beam coupling device---and coupled lens group (5) is coupled to the fibre core of Double Cladding Ytterbium Doped Fiber (6), and amplifies in Yb dosed optical fiber (6); The second pump arrangement of Yb dosed optical fiber power amplifier---7 pumping LD (semiconductor laser) (7) are synthetic a branch of by pumping coupling device 7 × 1 bundling devices (8a), and inject the covering of Yb dosed optical fiber (6) by profile pump mode.The output tail end welding of Yb dosed optical fiber (6) has end cap (9), and the 1030nm laser of amplification is exported by end cap (9).
As shown in Figure 3, native system is to adopt discrete optical element and passive fiber seed source to be injected to the optical fiber amplification system of Yb dosed optical fiber.The structure of Yb:YAG laser is identical with system shown in Fig. 2, and the 1048nm laser of its output injects one section of multimode passive fiber (10) by coupled lens group (5).This section of passive fiber (10) is identical with the signal injection fiber size in pumping coupling device (6+1) × 1 bundling device (8b), and the two welding is connected.The output tail optical fiber of 6 pumping LD (7) respectively with 6 pumping injection fibres welding of (6+1) × 1 bundling device (8b), by end pumping mode, pump light is injected to the covering of Yb dosed optical fiber (6).(6+1) output optical fibre of × 1 bundling device (8b) and Yb dosed optical fiber (6) welding, thus when realizing flashlight and pump light, inject.1048nm laser after amplification is by end cap (9) output of Yb dosed optical fiber (6) tail end welding.
As shown in Figure 4, native system is the optical fiber amplification system that adopts two-stage Yb dosed optical fiber power amplifier.The structure of Yb:YAG laser is identical with system shown in Fig. 2, and its Output of laser is coupled to the fibre core of the Yb dosed optical fiber (6a) of first order Yb dosed optical fiber power amplifier via coupled lens group (5).Fiber optic power amplifiers at different levels all adopt profile pump mode, and 14 the pumping LD (7) that closed bundle by two pumping coupling device 7*1 bundling devices (8a) inject respectively the Yb dosed optical fiber (6a) of two-stage Yb dosed optical fiber power amplifier, the covering of (6b) from the side.Laser amplifies step by step in amplification system, the gain fibre that dual-stage amplifier adopts is identical, between power amplifier, be connected by one section of passive fiber (10) measure-alike with Yb dosed optical fiber (6a), (6b), the two ends of passive fiber (10) respectively with Yb dosed optical fiber (6a), (6b) welding of two stage power amplifier.The tail end welding of the Yb dosed optical fiber (6b) of second level power amplifier has end cap (9), as the output of whole optical fiber amplification system.
As shown in Figure 5, this example is to adopt the parallel optical fiber amplification system injecting in three Yb:YAG laser seed sources.Three structural parameters are identical, the Yb:YAG laser of output 1030nm laser is as parallel seed source, the structure of Yb:YAG laser is identical with the structure of seed source in system shown in Figure 2, and its Output of laser is coupled to the fibre core of Double Cladding Ytterbium Doped Fiber (6) by coupled lens group (5) and (11).The output pump light of the pumping LD (7) of fiber optic power amplifier, is coupled to the covering of Double Cladding Ytterbium Doped Fiber (6) by pumping coupling device coupled lens group (8c) and coupled lens group (11).The flashlight that multiple seed sources are assembled amplifies transmission, finally by being exported by end cap (9) in Yb dosed optical fiber (6).
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvement and replacement, these improvement and replacement also should be considered as protection scope of the present invention.
Claims (7)
1. a Yb dosed optical fiber amplification system, is characterized in that, this system comprises: Yb:YAG laser, light beam coupling device and at least one-level Yb dosed optical fiber power amplifier, wherein:
Yb:YAG laser is for generation of laser, as the seed source of Yb dosed optical fiber power amplifier;
Light beam coupling device, for the Output of laser of Yb:YAG laser is carried out to light beam coupling, and is injected in Yb dosed optical fiber power amplifier;
Yb dosed optical fiber power amplifier, for carrying out power amplification to the laser injecting by light beam coupling device;
The output optical fibre tail end welding of afterbody Yb dosed optical fiber power amplifier has end cap, as the output of Yb dosed optical fiber amplification system.
2. Yb dosed optical fiber amplification system as claimed in claim 1, is characterized in that,
Described Yb:YAG laser is made up of the first pump arrangement, Yb:YAG crystal and laser mirror;
Described Yb dosed optical fiber power amplifier is made up of the second pump arrangement, pumping coupling device and Yb dosed optical fiber; The pump light that the second pump arrangement produces, injects Yb dosed optical fiber by the coupling of pumping coupling device; Yb dosed optical fiber carries out power amplification to the seed source laser injecting.
3. Yb dosed optical fiber amplification system as claimed in claim 2, is characterized in that, described pumping coupling device is end pumping bundling device, side pumping coupler or discrete Lens Coupling device.
4. Yb dosed optical fiber amplification system as claimed in claim 2, is characterized in that, the pump light that the second pump arrangement of described Yb dosed optical fiber power amplifier produces adopts end pumping or profile pump mode to inject the Yb dosed optical fiber of Yb dosed optical fiber power amplifier.
5. Yb dosed optical fiber amplification system as claimed in claim 1 or 2, is characterized in that, described light beam coupling device is made up of discrete optical element or discrete optical element and passive fiber.
6. Yb dosed optical fiber amplification system as claimed in claim 1 or 2, is characterized in that, Yb dosed optical fiber amplification system comprises multiple described Yb dosed optical fiber power amplifiers, adopts optical fiber to connect or discrete optical element connects between multiple Yb dosed optical fiber power amplifiers.
7. Yb dosed optical fiber amplification system as claimed in claim 1 or 2, is characterized in that, mixes ytterbium power amplifying system and comprises multiple Yb:YAG lasers; Each Yb:YAG laser is identical, or has different parameters aspect Output of laser wavelength, Output of laser pattern and/or Output of laser power.
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| CN201210519665.4A CN103855596A (en) | 2012-12-06 | 2012-12-06 | Ytterbium-mixed optical fiber amplification system |
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| CN201210519665.4A CN103855596A (en) | 2012-12-06 | 2012-12-06 | Ytterbium-mixed optical fiber amplification system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088304A (en) * | 2018-09-18 | 2018-12-25 | 深圳市杰普特光电股份有限公司 | Fiber pulse laser |
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| CN1845403A (en) * | 2006-05-08 | 2006-10-11 | 中国科学院上海光学精密机械研究所 | Dual wavelength pulse optical fiber laser system |
| CN201243158Y (en) * | 2008-08-13 | 2009-05-20 | 中国科学院上海光学精密机械研究所 | Medium-infrared thulium doped optical fiber laser amplifier |
| US7576909B2 (en) * | 1998-07-16 | 2009-08-18 | Imra America, Inc. | Multimode amplifier for amplifying single mode light |
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- 2012-12-06 CN CN201210519665.4A patent/CN103855596A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7576909B2 (en) * | 1998-07-16 | 2009-08-18 | Imra America, Inc. | Multimode amplifier for amplifying single mode light |
| CN1845403A (en) * | 2006-05-08 | 2006-10-11 | 中国科学院上海光学精密机械研究所 | Dual wavelength pulse optical fiber laser system |
| CN201243158Y (en) * | 2008-08-13 | 2009-05-20 | 中国科学院上海光学精密机械研究所 | Medium-infrared thulium doped optical fiber laser amplifier |
Non-Patent Citations (1)
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| 赵岭等: "基于固体激光器的光纤型MOPA 的研究", 《半导体光电》, vol. 26, no. 5, 30 October 2005 (2005-10-30) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109088304A (en) * | 2018-09-18 | 2018-12-25 | 深圳市杰普特光电股份有限公司 | Fiber pulse laser |
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